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Commit Graph

109299 Commits

Author SHA1 Message Date
Paul Burton
943d69c6c2 MIPS: JZ4740: support >32 interrupts
On newer Ingenic SoCs the interrupt controller supports more than 32
interrupts, which it does by duplicating the registers at intervals
of 0x20 bytes within its address space. Add support for an arbitrary
number of interrupts using multiple generic chips, and provide the
number of chips to register from the interrupt controller probe
function.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10141/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:53:03 +02:00
Paul Burton
fe778ece8e MIPS: JZ4740: Remove jz_intc_base global
Avoid the need for the global variable jz_intc_base by introducing a
struct ingenic_intc_data and passing it around as the IRQ handler data.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10144/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:53:02 +02:00
Paul Burton
2aabd281d6 MIPS: JZ4740: drop intc debugfs code
The debugfs code becomes a nuisance when attempting to avoid globals,
since the interrupt controller probe function run too early for it to be
safe to create the debugfs files. Drop it.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10139/
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:53:02 +02:00
Paul Burton
638c885185 MIPS: JZ4740: register an irq_domain for the interrupt controller
When probing the interrupt controller, register an IRQ domain such
that the interrupts can be translated by devicetree code & thus used
from devicetree.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10140/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:53:00 +02:00
Paul Burton
69ce4b2288 MIPS: JZ4740: parse SoC interrupt controller parent IRQ from DT
Rather than hardcoding the IRQ number used to cascade interrupts from
the SoC interrupt controller to the CPU interrupt controller, read that
IRQ number from the DT describing the system.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10137/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:59 +02:00
Paul Burton
adbdce77cc MIPS: JZ4740: probe interrupt controller via DT
Declare the JZ4740 interrupt controller for probe via DT using the
standard irqchip_init function, and make use of that function to probe
the controller by adding the appropriate node to the JZ4740 dtsi.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10135/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:58 +02:00
Paul Burton
0e81db8f5b MIPS: JZ4740: Move arch_init_irq out of arch/mips/jz4740/irq.c
In preparation for moving the JZ4740 interrupt controller driver to
drivers/irqchip, move arch_init_irq into setup.c such that everything
remaining in irq.c is related to said JZ4740 interrupt controller.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10136/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:56 +02:00
Paul Burton
2974a35657 MIPS: JZ4740: use generic plat_irq_dispatch
Make use of the generic plat_irq_dispatch function introduced by commit
85f7cdacbb "MIPS: Provide a generic plat_irq_dispatch", in order to
reduce unnecessary code duplication.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10138/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:55 +02:00
Paul Burton
8e8261eb6a MIPS: JZ4740: probe CPU interrupt controller via DT
Use the generic irqchip_init function to probe irqchip drivers using DT,
and add the appropriate node to the JZ4740 devicetree in place of the
call to mips_cpu_irq_init.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Patchwork: https://patchwork.linux-mips.org/patch/10166/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:54 +02:00
Ralf Baechle
67e38cf293 MIPS/IRQCHIP: Move irq_chip from arch/mips to drivers/irqchip.
While at it, rename it because in drivers/irqchip no longer every CPU is
a MIPS.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:50 +02:00
Paul Burton
ffb1843d05 MIPS: JZ4740: require & include DT
Require a DT for JZ4740 based systems, and add a stub one for the
qi_lb60 (Ben NanoNote) board. Devices will be migrated to being probed
via this DT over time.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10132/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:49 +02:00
Paul Burton
252617a4ab MIPS: ingenic: Add newer vendor IDs
Ingenic have actually varied the vendor/company ID of the XBurst cores
across their range of SoCs, whilst keeping the product ID & revision
constant... Add definitions for vendor IDs known to be used in some of
Ingenic's newer SoCs, and handle them in the same way as the existing
Ingenic vendor ID from the JZ4740.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Co-authored-by: Paul Cercueil <paul@crapouillou.net>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Joshua Kinard <kumba@gentoo.org>
Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-kernel@vger.kernel.org
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/10128/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:48 +02:00
Paul Burton
de361e8bb9 MIPS: JZ4740: introduce CONFIG_MACH_INGENIC
In preparation for supporting Ingenic SoCs other than the JZ4740,
introduce MACH_INGENIC to Kconfig & move MACH_JZ4740 to a separate
entry selected by the board when appropriate. This allows MACH_INGENIC
to be used to enable things generic across Ingenic SoCs.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Andrew Bresticker <abrestic@chromium.org>
Patchwork: https://patchwork.linux-mips.org/patch/10130/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:47 +02:00
Maciej W. Rozycki
bc4f12e639 MIPS: DEC: Update CPU overrides
Update CPU overrides for the DEC port with the recent additions, shaving
off some effectively dead code:

   text    data      bss      dec     hex filename
5586952  233132  5990368 11810452  b43694 vmlinux.32-old
5581248  233140  5990368 11804756  b42054 vmlinux.32-new

   text    data      bss      dec     hex filename
6036936  356648 10756544 17150128 105b0b0 vmlinux.64-old
6029896  360752 10756544 17147192 105a538 vmlinux.64-new

The data size increase is due to the special alignment requirement of
`init_thread_union' aka `.data..init_task' moving it up to the nearest
page boundary and making the amount of padding at its front rely on how
far within a page text ends.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10197/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:44 +02:00
Brian Norris
cc23cafe2b MIPS: netlogic: remove unnecessary MTD partition probe specification
The cmdlinepart parser is already supported in the default probe.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: linux-mtd@lists.infradead.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10071/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:43 +02:00
Maciej W. Rozycki
9a20b09285 MIPS: tlb-r3k: Optimise a TLBWI barrier in TLB invalidation
Replace an explicit barrier with a useful processor instruction in TLB
invalidation, following several other such cases elsewhere in
`tlb-r3k.c'.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10196/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:41 +02:00
Maciej W. Rozycki
3bcb03f3a7 MIPS: tlb-r3k: Move CP0.Wired register initialisation to `tlb_init'
Move the initialisation of the CP0.Wired register implemented by Toshiba
TX3922 and TX3927 processors from `tx39_cache_init' to `tlb_init' where
it belongs, correcting code structure and making sure initialisation
does not rely on `tx39_cache_init' being called before `tlb_init' to
work correctly.

Make `r3k_have_wired_reg' static as it's no longer externally referred
to; remove a stale declaration too.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10195/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:41 +02:00
Maciej W. Rozycki
dbfbf60f4a MIPS: tlb-r3k: Also invalidate wired TLB entries on boot
Most R3k processor implementations have their 8 first TLB entries fixed
as wired, so we always skip them in TLB invalidation.  That however
means any leftover entries present there at boot will stay throughout
the life of the kernel, unless replaced with new ones.

So rename `local_flush_tlb_all' to `local_flush_tlb_from' and make it
accept the TLB entry to start from.  Then use 0 initially at bootstrap,
and the first regular entry later on, bypassing any wired entries.
Wrap the latter arrangement into a new `local_flush_tlb_all' entry
point.

There is no need to disable interrupts in the call made from `tlb_init'
because it's made before the interrupt subsystem has been initialised;
this is also true for secondary processors, should we ever support R3k
SMP.  So move this piece of code to new `local_flush_tlb_all'.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10194/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:39 +02:00
James Hogan
24ca1d9896 MIPS: dump_tlb: Take XPA into account
XPA extends the physical addresses on MIPS32, including the EntryLo
registers. Update dump_tlb() to concatenate the PFNX field from the high
end of the EntryLo registers (as read by mfhc0).

The width of physical and virtual addresses are also separated to show
only 8 nibbles of virtual but 11 nibbles of physical with XPA.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10077/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:39 +02:00
James Hogan
c2bc435e4f MIPS: dump_tlb: Take RI/XI bits into account
The RI/XI bits when present are above the PFN field in the EntryLo
registers, at bits 63,62 when read with dmfc0, and bits 31,30 when read
with mfc0. This makes them appear as part of the physical address, since
the other bits are masked with PAGE_MASK, for example:

Index: 253 pgmask=16kb va=77b18000 asid=75
        [pa=1000744000 c=5 d=1 v=1 g=0] [pa=100134c000 c=5 d=1 v=1 g=0]

The physical addresses have bit 36 set, which corresponds to bit 30 of
EntryLo1, the XI bit.

Explicitly mask off the RI and XI bits from the printed physical
address, and print the RI and XI bits separately if they exist, giving
output more like this:

Index: 226 pgmask=16kb va=77be0000 asid=79
        [ri=0 xi=1 pa=01288000 c=5 d=1 v=1 g=0] [ri=0 xi=0 pa=010e4000 c=5 d=0 v=1 g=0]

Cc: linux-mips@linux-mips.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: David Daney <ddaney@caviumnetworks.com>
Patchwork: https://patchwork.linux-mips.org/patch/10080/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:38 +02:00
James Hogan
decebccd76 MIPS: dump_tlb: Take EHINV bit into account
The EHINV bit in EntryHi allows a TLB entry to be properly marked
invalid so that EntryHi doesn't have to be set to a unique value to
avoid machine check exceptions due to multiple matching entries.

Unfortunately dump_tlb() doesn't take this into account so it will print
all the uninteresting invalid TLB entries if the current ASID happens to
be 00. Therefore add a condition to skip entries which are marked
invalid with the EHINV bit.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10076/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:36 +02:00
James Hogan
48269c78fb MIPS: dump_tlb: Take global bit into account
The TLB only matches the ASID when the global bit isn't set, so
dump_tlb() shouldn't really be skipping global entries just because the
ASID doesn't match. Fix the condition to read the TLB entry's global bit
from EntryLo0. Note that after a TLB read the global bits in both
EntryLo registers reflect the same global bit in the TLB entry.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10079/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:35 +02:00
James Hogan
d7f5499dc2 MIPS: dump_tlb: Make use of EntryLo bit definitions
Make use of recently added EntryLo bit definitions in mipsregs.h when
dumping TLB contents.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10075/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:34 +02:00
James Hogan
d1ce483e45 MIPS: dump_tlb: Refactor TLB matching
Refactor the TLB matching code in dump_tlb() slightly so that the
conditions which can cause a TLB entry to be skipped can be more easily
extended. This should prevent the match condition getting unwieldy once
it is updated to take further conditions into account.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10081/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:33 +02:00
James Hogan
137877e432 MIPS: dump_tlb: Use tlbr hazard macros
Use the new tlb read hazard macros from <asm/hazards.h> rather than the
local BARRIER() macro which uses 7 ops regardless of the kernel
configuration.

We use mtc0_tlbr_hazard for the hazard between mtc0 to the index
register and the tlbr, and tlb_read_hazard for the hazard between the
tlbr and the mfc0 of the TLB registers written by tlbr.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10074/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:32 +02:00
James Hogan
8ab6abcb6a MIPS: mipsregs.h: Add EntryLo bit definitions
Add definitions for EntryLo register bits in mipsregs.h. The R4000
compatible ones are prefixed MIPS_ENTRYLO_ and the R3000 compatible ones
are prefixed R3K_ENTRYLO_.

These will be used in later patches.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/10073/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:31 +02:00
James Hogan
e50f0e3135 MIPS: hazards: Add hazard macros for tlb read
Add hazard macros to <asm/hazards.h> for the following hazards around
tlbr (TLB read) instructions, which are used in TLB dumping code and
some KVM TLB management code:

- mtc0_tlbr_hazard
  Between mtc0 (Index) and tlbr. This is copied from mtc0_tlbw_hazard in
  all cases on the assumption that tlbr always has similar data user
  timings to tlbw.

- tlb_read_hazard
  Between tlbr and mfc0 (various TLB registers). This is copied from
  tlbw_use_hazard in all cases on the assumption that tlbr has similar
  data writer characteristics to tlbw, and mfc0 has similar data user
  characteristics to loads and stores.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10078/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:28 +02:00
James Hogan
d1e9a4f547 MIPS: Add SysRq operation to dump TLBs on all CPUs
Add a MIPS specific SysRq operation to dump the TLB entries on all CPUs,
using the 'x' trigger key.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10072/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:27 +02:00
Petri Gynther
37dd3818d1 MIPS: traps: print Exception Code in __show_regs()
Print Exception Code when printing the Cause register.

Signed-off-by: Petri Gynther <pgynther@google.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9998/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:26 +02:00
Rafał Miłecki
2623899459 MIPS: BCM47xx: Read board info for all bcma buses
Extra bcma buses may be totally different models, see following dump:
boardtype=0x0646
pci/1/1/boardtype=0x0545
pci/2/1/boardtype=0x62b
We need to detect them properly to allow drivers apply some board
specific hacks.

[ralf@linux-mips.org: folded in Rafal's fix.]

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: https://patchwork.linux-mips.org/patch/10028/
Patchwork: https://patchwork.linux-mips.org/patch/10048/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:25 +02:00
Rafał Miłecki
6e122ac005 MIPS: BCM47xx: Extract info about et2 interface
New devices may have more than 1 Ethernet core (device). We should
extract info about them to make it available to Ethernet drivers.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Hante Meuleman <meuleman@broadcom.com>
Cc: Ian Kent <raven@themaw.net>
Patchwork: https://patchwork.linux-mips.org/patch/10027/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:24 +02:00
Rafał Miłecki
1387fe7d29 MIPS: BCM47xx: Extract all boardflags to new u32 fields
For years we planned to get rid of old u16 fields, let's start doing it
with MIPS code. This process will take some time, it requires doing the
same in ssb/bcma and then switching all drivers to new fields. This will
be handled in separated patches submitted to appropriate trees.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: https://patchwork.linux-mips.org/patch/10026/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:23 +02:00
Rafał Miłecki
5bfad4eee9 MIPS: BCM47XX: Simplify function looking for NVRAM entry
First of all it shouldn't modify copied NVRAM just to make sure it can
loop over all entries. It's enough to just compare current position
pointer with the end of buffer address.
Secondly buffer is guaranteed to be \0 ended, so we don't need strnchr.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Hante Meuleman <meuleman@broadcom.com>
Cc: Ian Kent <raven@themaw.net>
Patchwork: https://patchwork.linux-mips.org/patch/10032/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:21 +02:00
Rafał Miłecki
d28c9a55c2 MIPS: BCM47XX: Make sure NVRAM buffer ends with \0
This will simplify reading its contents.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Hante Meuleman <meuleman@broadcom.com>
Cc: Ian Kent <raven@themaw.net>
Patchwork: https://patchwork.linux-mips.org/patch/10031/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:20 +02:00
Ralf Baechle
2fb7ac5ba6 MIPS: Malta: Make maltasmvp_defconfig useful again.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:19 +02:00
Ralf Baechle
fb59e394c3 MIPS: ftrace: Enable support for syscall tracepoints.
All the necessary support code is already there so all that's left is
to enable the feature in kconfig.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:52:18 +02:00
Linus Torvalds
1f1e34f723 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull more MIPS fixes from Ralf Baechle:
 "Another round of 4.1 MIPS fixes, one fix to a MIPS-specific #if
  condition in lib/mpi, one fix to the MIPS GIC irqchip driver and one
  SSB fix.

  Details:
   - fix handling of clock in chipco SSB driver.
   - fix two MIPS-specific #if conditions to correctly work for GCC 5.1.
   - fix damage to R6 pgtable bits done by XPA support.
   - fix possible crash due to unloading modules that contain statically
     defined platform devices.
   - fix disabling of the MSA ASE on context switch to also work
     correctly when a new thread/process has the CPU for the very first
     time.

  This is part of linux-next and has been beaten to death on
  Imagination's test farm.

  While things are not looking too grim this pull request also means the
  rate of fixes for 4.1 remains nearly constant so I'd not be unhappy if
  you'd delay the release"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MPI: MIPS: Fix compilation error with GCC 5.1
  IRQCHIP: mips-gic: Don't nest calls to do_IRQ()
  MIPS: MSA: bugfix - disable MSA correctly for new threads/processes.
  MIPS: Loongson: Do not register 8250 platform device from module.
  MIPS: Cobalt: Do not build MTD platform device registration code as module.
  SSB: Fix handling of ssb_pmu_get_alp_clock()
  MIPS: pgtable-bits: Fix XPA damage to R6 definitions.
2015-06-14 15:38:57 -10:00
Linus Torvalds
d37479aac5 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "A regression fix for a crash, and a Intel HSW uncore PMU driver fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Revert "perf/x86/intel/uncore: Move uncore_box_init() out of driver initialization"
  perf/x86/intel/uncore: Fix CBOX bit wide and UBOX reg on Haswell-EP
2015-06-14 14:00:13 -10:00
Linus Torvalds
2bfc60dd28 Fix build errors affecting blackfin and score architectures.
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Merge tag 'misc-for-linus-4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull misc fixes from Guenter Roeck:
 "There are two patches here.  One fixes a build error affecting the
  blackfin architecture, the other fixes a build error affecting the
  score architecture.

  The score maintainer (Lennox Wu) has a hard time sending you the score
  patch, and the blackfin maintainer (Steven Miao) has been silent since
  -rc1.  Since 4.1 is about to be released, I figured it would be useful
  to get the patches upstream to avoid the related build failures in the
  final release"

* tag 'misc-for-linus-4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  score: Fix exception handler label
  blackfin: Fix build error
2015-06-10 17:16:32 -07:00
Andrew Morton
5ec45a192f arch/x86/kvm/mmu.c: work around gcc-4.4.4 bug
Fix this compile issue with gcc-4.4.4:

   arch/x86/kvm/mmu.c: In function 'kvm_mmu_pte_write':
   arch/x86/kvm/mmu.c:4256: error: unknown field 'cr0_wp' specified in initializer
   arch/x86/kvm/mmu.c:4257: error: unknown field 'cr4_pae' specified in initializer
   arch/x86/kvm/mmu.c:4257: warning: excess elements in union initializer
   ...

gcc-4.4.4 (at least) has issues when using anonymous unions in
initializers.

Fixes: edc90b7dc4 ("KVM: MMU: fix SMAP virtualization")
Cc: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-06-10 16:43:43 -07:00
Guenter Roeck
80524e9336 score: Fix exception handler label
The latest version of modinfo fails to compile score architecture
targets with the following error.

FATAL: The relocation at __ex_table+0x634 references
section "__ex_table" which is not executable, IOW
the kernel will fault if it ever tries to
jump to it.  Something is seriously wrong
and should be fixed.

The probem is caused by a bad label in an __ex_table entry.

Acked-by: Lennox Wu <lennox.wu@gmail.com>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-06-10 10:19:47 -07:00
Guenter Roeck
5eea900389 blackfin: Fix build error
Fix

include/asm-generic/io.h: In function 'readb':
include/asm-generic/io.h:113:2: error:
	implicit declaration of function 'bfin_read8'
include/asm-generic/io.h: In function 'readw':
include/asm-generic/io.h:121:2: error:
	implicit declaration of function 'bfin_read16'
include/asm-generic/io.h: In function 'readl':
include/asm-generic/io.h:129:2: error:
	implicit declaration of function 'bfin_read32'
include/asm-generic/io.h: In function 'writeb':
include/asm-generic/io.h:147:2: error:
	implicit declaration of function 'bfin_write8'
include/asm-generic/io.h: In function 'writew':
include/asm-generic/io.h:155:2: error:
	implicit declaration of function 'bfin_write16'
include/asm-generic/io.h: In function 'writel':
include/asm-generic/io.h:163:2: error:
	implicit declaration of function 'bfin_write32'

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Fixes: 1a3372bc52 ("blackfin: io: define __raw_readx/writex with
	bfin_readx/writex")
Cc: Steven Miao <realmz6@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-06-10 10:19:24 -07:00
Ralf Baechle
9cc719ab3f MIPS: MSA: bugfix - disable MSA correctly for new threads/processes.
Due to the slightly odd way that new threads and processes start execution
when scheduled for the very first time they were bypassing the required
disable_msa call.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-10 11:24:53 +02:00
Ralf Baechle
d9fb566045 MIPS: Loongson: Do not register 8250 platform device from module.
If CONFIG_SERIAL_8250 is set to m, the Loongson seria.ko module might get
unloaded while the serial driver modules are still loaded resulting in
stale references to the destroyed platform_device instance.

Anyway, platform devices should always be registered indicated what
devices are present, _not_ what drivers have been configured.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Patchwork: https://patchwork.linux-mips.org/patch/10538/
2015-06-10 10:43:07 +02:00
Ralf Baechle
34b1252bd9 MIPS: Cobalt: Do not build MTD platform device registration code as module.
If CONFIG_MTD_PHYSMAP is set to m, the Cobalt mtd.ko module might get
unloaded while the drivers/mtd modules are still loaded resulting in
stale references to the destroyed platform_device instance.

Anyway, platform devices should always be registered indicated what
devices are present, _not_ what drivers have been configured.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-10 10:39:30 +02:00
Ingo Molnar
15c1247953 Revert "perf/x86/intel/uncore: Move uncore_box_init() out of driver initialization"
This reverts commit c05199e5a5.

Vince Weaver reported the following crash while perf fuzzing:

[   79.473121] kernel BUG at mm/vmalloc.c:1335!
[   79.694391] Call Trace:
[   79.696997]  <IRQ>
[   79.699090]  [<ffffffff811b2130>] get_vm_area_caller+0x40/0x50
[   79.705505]  [<ffffffff81039f4d>] ? snb_uncore_imc_init_box+0x6d/0x90
[   79.712414]  [<ffffffff810635e5>] __ioremap_caller+0x195/0x350
[   79.718610]  [<ffffffff81039f4d>] ? snb_uncore_imc_init_box+0x6d/0x90
[   79.725462]  [<ffffffff81427f6b>] ? debug_object_activate+0x14b/0x1e0
[   79.732346]  [<ffffffff810637b7>] ioremap_nocache+0x17/0x20
[   79.738283]  [<ffffffff81039f4d>] snb_uncore_imc_init_box+0x6d/0x90
[   79.744945]  [<ffffffff81039cf7>] snb_uncore_imc_event_start+0xb7/0x110
[   79.752020]  [<ffffffff81039d97>] snb_uncore_imc_event_add+0x47/0x60
[   79.758832]  [<ffffffff81162cbb>] event_sched_in.isra.85+0xfb/0x330
[   79.765519]  [<ffffffff81162f5f>] group_sched_in+0x6f/0x1e0
[   79.771481]  [<ffffffff8101df1a>] ? native_sched_clock+0x2a/0x90
[   79.777858]  [<ffffffff811637bc>] __perf_event_enable+0x25c/0x2a0
[   79.784418]  [<ffffffff810f3e69>] ? tick_nohz_irq_exit+0x29/0x30
[   79.790820]  [<ffffffff8115ef30>] ? cpu_clock_event_start+0x40/0x40
[   79.797546]  [<ffffffff8115ef80>] remote_function+0x50/0x60
[   79.803535]  [<ffffffff810f8cd1>] flush_smp_call_function_queue+0x81/0x180
[   79.810840]  [<ffffffff810f9763>] generic_smp_call_function_single_interrupt+0x13/0x60
[   79.819328]  [<ffffffff8104b5e8>] smp_trace_call_function_single_interrupt+0x38/0xc0
[   79.827614]  [<ffffffff816de9be>] trace_call_function_single_interrupt+0x6e/0x80
[   79.835465]  <EOI>
[   79.837543]  [<ffffffff8156e8b5>] ? cpuidle_enter_state+0x65/0x160
[   79.844377]  [<ffffffff8156e8a1>] ? cpuidle_enter_state+0x51/0x160
[   79.851015]  [<ffffffff8156e9e7>] cpuidle_enter+0x17/0x20
[   79.856791]  [<ffffffff810b6e39>] cpu_startup_entry+0x399/0x440
[   79.863165]  [<ffffffff816c9ddb>] rest_init+0xbb/0xd0

The offending commit is clearly confused as it moves heavy initialization
work into IPI context.

Revert it.

Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Yan, Zheng <zheng.z.yan@intel.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-09 11:44:37 +02:00
Markos Chandras
d7b631419b MIPS: pgtable-bits: Fix XPA damage to R6 definitions.
Commit be0c37c985 ("MIPS: Rearrange PTE bits into fixed positions.")
rearranged the PTE bits into fixed positions in preparation for the XPA
support. However, this patch broke R6 since it only took R2 cores
into consideration for the RI/XI bits leading to boot failures. We fix
this by adding the missing CONFIG_CPU_MIPSR6 definitions

Fixes: be0c37c985 ("MIPS: Rearrange PTE bits into fixed positions.")
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10208/
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-09 10:45:05 +02:00
Linus Torvalds
5879ae5fd0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix stack allocation in s390 BPF JIT, from Michael Holzheu.

 2) Disable LRO on openvswitch paths, from Jiri Benc.

 3) UDP early demux doesn't handle multicast group membership properly,
    fix from Shawn Bohrer.

 4) Fix TX queue hang due to incorrect handling of mixed sized fragments
    and linearlization in i40e driver, from Anjali Singhai Jain.

 5) Cannot use disable_irq() in timer handler of AMD xgbe driver, from
    Thomas Lendacky.

 6) b2net driver improperly assumes pci_alloc_consistent() gives zero'd
    out memory, use dma_zalloc_coherent().  From Sriharsha Basavapatna.

 7) Fix use-after-free in MPLS and ipv6, from Robert Shearman.

 8) Missing neif_napi_del() calls in cleanup paths of b44 driver, from
    Hauke Mehrtens.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  net: replace last open coded skb_orphan_frags with function call
  net: bcmgenet: power on MII block for all MII modes
  ipv6: Fix protocol resubmission
  ipv6: fix possible use after free of dev stats
  b44: call netif_napi_del()
  bridge: disable softirqs around br_fdb_update to avoid lockup
  Revert "bridge: use _bh spinlock variant for br_fdb_update to avoid lockup"
  mpls: fix possible use after free of device
  be2net: Replace dma/pci_alloc_coherent() calls with dma_zalloc_coherent()
  bridge: use _bh spinlock variant for br_fdb_update to avoid lockup
  amd-xgbe: Use disable_irq_nosync from within timer function
  rhashtable: add missing import <linux/export.h>
  i40e: Make sure to be in VEB mode if SRIOV is enabled at probe
  i40e: start up in VEPA mode by default
  i40e/i40evf: Fix mixed size frags and linearization
  ipv4/udp: Verify multicast group is ours in upd_v4_early_demux()
  openvswitch: disable LRO
  s390/bpf: fix bpf frame pointer setup
  s390/bpf: fix stack allocation
2015-06-08 17:41:04 -07:00
Linus Torvalds
40b985fbe9 ARM: SoC fixes for v4.1-rc
About 10 days worth of small bug fixes, and the (hopefully) final
 round fixes for from arm-soc land for the -rc cycle.  Nothing special
 to note, but here's a brief summary of fixes by SoC type:
 
 - OMAP: small set of misc. DT fixes; boot fix for THUMB2 kernel
 - mediatek: PMIC fixes; DT fix for model name
 - exynos: wakeup interupt fixes for 3250
 - mvebu: revert mbus patch which broke DMA masters
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Kevin Hilman:
 "About 10 days worth of small bug fixes, and the (hopefully) final
  round fixes for from arm-soc land for the -rc cycle.  Nothing special
  to note, but here's a brief summary of fixes by SoC type:

   - OMAP:
        small set of misc DT fixes; boot fix for THUMB2 kernel

   - mediatek:
        PMIC fixes; DT fix for model name

   - exynos:
        wakeup interupt fixes for 3250

   - mvebu:
        revert mbus patch which broke DMA masters

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: dts: am335x-boneblack: disable RTC-only sleep to avoid hardware damage
  ARM: dts: AM35xx: fix system control module clocks
  arm64: dts: mt8173-evb: fix model name
  ARM: exynos: Fix wake-up interrupts for Exynos3250
  ARM: dts: Fix n900 dts file to work around 4.1 touchscreen regression on n900
  ARM: dts: Fix dm816x to use right compatible flag for MUSB
  ARM: OMAP3: Fix booting with thumb2 kernel
  Revert "bus: mvebu-mbus: make sure SDRAM CS for DMA don't overlap the MBus bridge window"
  bus: mvebu-mbus: do not set WIN_CTRL_SYNCBARRIER on non io-coherent platforms.
  ARM: mvebu: armada-xp-linksys-mamba: Disable internal RTC
  soc: mediatek: Add compile dependency to pmic-wrapper
  soc: mediatek: PMIC wrap: Fix register state machine handling
  soc: mediatek: PMIC wrap: Fix clock rate handling
2015-06-08 13:21:58 -07:00
Kevin Hilman
0a68c6bc7c Omap fixes for the -rc cycle, including a fix for potential hardware
breakage on BeagleBones:
 
 - BeagleBones don't support RTC-only mode, it can cause hardware
   damage if system-power-controller is specified without
   ti,pmic-shutdown-controller
 
 - Fix a recent regression to am3517 SoCs caused by the recent clock
   move that was not noticed until now despite automated boot
   testing
 
 - Fix a regression for n900 touchscreen triggered by recent
   recent input changes
 
 - Fix compatible property for dm816x USB to avoid errors with
   USB Ethernet
 
 - Fix oops for omap3 when built with CONFIG_THUMB2_KERNEL
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Merge tag 'omap-for-v4.1/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Merge omap fixes for v4.1, urgent fix to avoid potential hardware damage From Tony Lindgren:

Omap fixes for the -rc cycle, including a fix for potential hardware
breakage on BeagleBones:

- BeagleBones don't support RTC-only mode, it can cause hardware
  damage if system-power-controller is specified without
  ti,pmic-shutdown-controller

- Fix a recent regression to am3517 SoCs caused by the recent clock
  move that was not noticed until now despite automated boot
  testing

- Fix a regression for n900 touchscreen triggered by recent
  recent input changes

- Fix compatible property for dm816x USB to avoid errors with
  USB Ethernet

- Fix oops for omap3 when built with CONFIG_THUMB2_KERNEL

* tag 'omap-for-v4.1/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: am335x-boneblack: disable RTC-only sleep to avoid hardware damage
  ARM: dts: AM35xx: fix system control module clocks
  ARM: dts: Fix n900 dts file to work around 4.1 touchscreen regression on n900
  ARM: dts: Fix dm816x to use right compatible flag for MUSB
  ARM: OMAP3: Fix booting with thumb2 kernel
2015-06-08 10:32:55 -07:00
Linus Torvalds
866e6441a4 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
 "Eight fixes across arch/mips.  Nothing stands particuarly out nor is
  complicated but fixes keep coming in at a higher than comfortable
  rate"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: KVM: Do not sign extend on unsigned MMIO load
  MIPS: BPF: Fix stack pointer allocation
  MIPS: Loongson-3: Fix a cpu-hotplug issue in loongson3_ipi_interrupt()
  MIPS: Fix enabling of DEBUG_STACKOVERFLOW
  MIPS: c-r4k: Fix typo in probe_scache()
  MIPS: Avoid an FPE exception in FCSR mask probing
  MIPS: ath79: Add a missing new line in log message
  MIPS: ralink: Fix clearing the illegal access interrupt
2015-06-07 16:56:10 -07:00
Kan Liang
8cf1a3de97 perf/x86/intel/uncore: Fix CBOX bit wide and UBOX reg on Haswell-EP
CBOX counters are increased to 48b on HSX.

Correct the MSR address for HSWEP_U_MSR_PMON_CTR0 and
HSWEP_U_MSR_PMON_CTL0.

See specification in:
http://www.intel.com/content/www/us/en/processors/xeon/
xeon-e5-v3-uncore-performance-monitoring.html

Signed-off-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1432645835-7918-1-git-send-email-kan.liang@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-07 15:46:50 +02:00
Nicholas Mc Guire
ed9244e6c5 MIPS: KVM: Do not sign extend on unsigned MMIO load
Fix possible unintended sign extension in unsigned MMIO loads by casting
to uint16_t in the case of mmio_needed != 2.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Tested-by: James Hogan <james.hogan@imgtec.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/9985/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-06 10:21:10 +02:00
Markos Chandras
8833bc308b MIPS: BPF: Fix stack pointer allocation
Fix stack pointer offset which could potentially corrupt
argument registers in the previous frame. The calculated offset
reflects the size of all the registers we need to preserve so there
is no need for this erroneous subtraction.

[ralf@linux-mips.org: Fixed conflict due to only applying this fix part
of the entire series as part of 4.1 fixes.]

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: netdev@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Daniel Borkmann <dborkman@redhat.com>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/10527/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-06 10:21:10 +02:00
Huacai Chen
e1fb96e064 MIPS: Loongson-3: Fix a cpu-hotplug issue in loongson3_ipi_interrupt()
setup_per_cpu_areas() only setup __per_cpu_offset[] for each possible
cpu, but loongson_sysconf.nr_cpus can be greater than possible cpus
(due to reserved_cpus_mask). So in loongson3_ipi_interrupt(), percpu
access will touch the original varible in .data..percpu section which
has been freed. Without this patch, cpu-hotplug will cause memery
corruption.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/10524/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-06 10:21:10 +02:00
James Hogan
5f35b9cd55 MIPS: Fix enabling of DEBUG_STACKOVERFLOW
Commit 334c86c494 ("MIPS: IRQ: Add stackoverflow detection") added
kernel stack overflow detection, however it only enabled it conditional
upon the preprocessor definition DEBUG_STACKOVERFLOW, which is never
actually defined. The Kconfig option is called DEBUG_STACKOVERFLOW,
which manifests to the preprocessor as CONFIG_DEBUG_STACKOVERFLOW, so
switch it to using that definition instead.

Fixes: 334c86c494 ("MIPS: IRQ: Add stackoverflow detection")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Adam Jiang <jiang.adam@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 2.6.37+
Patchwork: http://patchwork.linux-mips.org/patch/10531/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-06 10:21:09 +02:00
Joshua Kinard
755af33b00 MIPS: c-r4k: Fix typo in probe_scache()
Fixes a typo in arch/mips/mm/c-r4k.c's probe_scache().

Signed-off-by: Joshua Kinard <kumba@gentoo.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-06 10:21:09 +02:00
Linus Torvalds
51d0f0cb3a Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "Misc fixes:

   - early_idt_handlers[] fix that fixes the build with bleeding edge
     tooling

   - build warning fix on GCC 5.1

   - vm86 fix plus self-test to make it harder to break it again"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/asm/irq: Stop relying on magic JMP behavior for early_idt_handlers
  x86/asm/entry/32, selftests: Add a selftest for kernel entries from VM86 mode
  x86/boot: Add CONFIG_PARAVIRT_SPINLOCKS quirk to arch/x86/boot/compressed/misc.h
  x86/asm/entry/32: Really make user_mode() work correctly for VM86 mode
2015-06-05 10:03:48 -07:00
Linus Torvalds
a0e9c6efa5 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "The biggest chunk of the changes are two regression fixes: a HT
  workaround fix and an event-group scheduling fix.  It's been verified
  with 5 days of fuzzer testing.

  Other fixes:

   - eBPF fix
   - a BIOS breakage detection fix
   - PMU driver fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel/pt: Fix a refactoring bug
  perf/x86: Tweak broken BIOS rules during check_hw_exists()
  perf/x86/intel/pt: Untangle pt_buffer_reset_markers()
  perf: Disallow sparse AUX allocations for non-SG PMUs in overwrite mode
  perf/x86: Improve HT workaround GP counter constraint
  perf/x86: Fix event/group validation
  perf: Fix race in BPF program unregister
2015-06-05 10:00:53 -07:00
Alexander Shishkin
b44a2b53be perf/x86/intel/pt: Fix a refactoring bug
Commit 066450be41 ("perf/x86/intel/pt: Clean up the control flow
in pt_pmu_hw_init()") changed attribute initialization so that
only the first attribute gets initialized using
sysfs_attr_init(), which upsets lockdep.

This patch fixes the glitch so that all allocated attributes are
properly initialized thus fixing the lockdep warning reported by
Tvrtko and Imre.

Reported-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Reported-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-04 16:07:51 +02:00
Michael Holzheu
88aeca15d6 s390/bpf: fix bpf frame pointer setup
Currently the bpf frame pointer is set to the old r15. This is
wrong because of packed stack. Fix this and adjust the frame pointer
to respect packed stack. This now generates a prolog like the following:

 3ff8001c3fa: eb67f0480024   stmg    %r6,%r7,72(%r15)
 3ff8001c400: ebcff0780024   stmg    %r12,%r15,120(%r15)
 3ff8001c406: b904001f       lgr     %r1,%r15      <- load backchain
 3ff8001c40a: 41d0f048       la      %r13,72(%r15) <- load adjusted bfp
 3ff8001c40e: a7fbfd98       aghi    %r15,-616
 3ff8001c412: e310f0980024   stg     %r1,152(%r15) <- save backchain

Fixes: 0546231057 ("s390/bpf: Add s390x eBPF JIT compiler backend")
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-03 19:31:39 -07:00
Michael Holzheu
bbac1c9488 s390/bpf: fix stack allocation
On s390x we have to provide 160 bytes stack space before we can call
the next function. From the 160 bytes that we got from the previous
function we only use 11 * 8 bytes and have 160 - 11 * 8 bytes left.
Currently for BPF we allocate additional 160 - 11 * 8 bytes for the
next function. This is wrong because then the next function only gets:

 (160 - 11 * 8) + (160 - 11 * 8) = 2 * 72 = 144 bytes

Fix this and allocate enough memory for the next function.

Fixes: 0546231057 ("s390/bpf: Add s390x eBPF JIT compiler backend")
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-03 19:31:39 -07:00
Maciej W. Rozycki
90b712ddab MIPS: Avoid an FPE exception in FCSR mask probing
Use the default FCSR value in mask probing, avoiding an FPE exception
where reset has left any exception enable and their corresponding cause
bits set and the register is then rewritten with these bits active.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Joshua Kinard <kumba@gentoo.org>
Cc: linux-mips@linux-mips.org
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-03 09:50:29 +02:00
Linus Torvalds
8cd9234c64 Fix some build warnings for ia64 - cpu_callin_map doesn't need to be volatile
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Merge tag 'please-pull-rusty' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux

Pull ia64 fix from Tony Luck:
 "Fix some build warnings for ia64 - cpu_callin_map doesn't need to be
  volatile"

* tag 'please-pull-rusty' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
  ia64: make cpu_callin_map non-volatile.
2015-06-02 10:58:34 -07:00
Rusty Russell
5eda7861e3 ia64: make cpu_callin_map non-volatile.
cpumask_test_cpu() doesn't take volatile, unlike the obsoleted
cpu_isset.  The only place ia64 really cares is the spin waiting for a
bit; udelay() is probably a barrier but insert barrier() to be sure.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2015-06-02 10:07:03 -07:00
Alban Bedel
a26484bb7e MIPS: ath79: Add a missing new line in log message
The memory setup log is missing a new line.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: linux-mips@linux-mips.org
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/9771/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-02 16:07:31 +02:00
Andy Lutomirski
425be5679f x86/asm/irq: Stop relying on magic JMP behavior for early_idt_handlers
The early_idt_handlers asm code generates an array of entry
points spaced nine bytes apart.  It's not really clear from that
code or from the places that reference it what's going on, and
the code only works in the first place because GAS never
generates two-byte JMP instructions when jumping to global
labels.

Clean up the code to generate the correct array stride (member size)
explicitly. This should be considerably more robust against
screw-ups, as GAS will warn if a .fill directive has a negative
count.  Using '. =' to advance would have been even more robust
(it would generate an actual error if it tried to move
backwards), but it would pad with nulls, confusing anyone who
tries to disassemble the code.  The new scheme should be much
clearer to future readers.

While we're at it, improve the comments and rename the array and
common code.

Binutils may start relaxing jumps to non-weak labels.  If so,
this change will fix our build, and we may need to backport this
change.

Before, on x86_64:

  0000000000000000 <early_idt_handlers>:
     0:   6a 00                   pushq  $0x0
     2:   6a 00                   pushq  $0x0
     4:   e9 00 00 00 00          jmpq   9 <early_idt_handlers+0x9>
                          5: R_X86_64_PC32        early_idt_handler-0x4
  ...
    48:   66 90                   xchg   %ax,%ax
    4a:   6a 08                   pushq  $0x8
    4c:   e9 00 00 00 00          jmpq   51 <early_idt_handlers+0x51>
                          4d: R_X86_64_PC32       early_idt_handler-0x4
  ...
   117:   6a 00                   pushq  $0x0
   119:   6a 1f                   pushq  $0x1f
   11b:   e9 00 00 00 00          jmpq   120 <early_idt_handler>
                          11c: R_X86_64_PC32      early_idt_handler-0x4

After:

  0000000000000000 <early_idt_handler_array>:
     0:   6a 00                   pushq  $0x0
     2:   6a 00                   pushq  $0x0
     4:   e9 14 01 00 00          jmpq   11d <early_idt_handler_common>
  ...
    48:   6a 08                   pushq  $0x8
    4a:   e9 d1 00 00 00          jmpq   120 <early_idt_handler_common>
    4f:   cc                      int3
    50:   cc                      int3
  ...
   117:   6a 00                   pushq  $0x0
   119:   6a 1f                   pushq  $0x1f
   11b:   eb 03                   jmp    120 <early_idt_handler_common>
   11d:   cc                      int3
   11e:   cc                      int3
   11f:   cc                      int3

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Acked-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Binutils <binutils@sourceware.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H.J. Lu <hjl.tools@gmail.com>
Cc: Jan Beulich <JBeulich@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/ac027962af343b0c599cbfcf50b945ad2ef3d7a8.1432336324.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-02 09:39:40 +02:00
Linus Torvalds
2459c6099b Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Pull Sparc fixes from David Miller:

 1) Setup the core/threads/sockets bitmaps correctly so that 'lscpus'
    and friends operate properly.  Frtom Chris Hyser.

 2) The bit that normally means "Cached Virtually" on sun4v systems,
    actually changes meaning in M7 and later chips.  Fix from Khalid
    Aziz.

 3) One some PCI-E systems we need to probe different OF properties to
    fill in the PCI slot information properly, from Eric Snowberg.

 4) Kill an extraneous memset after kzalloc(), from Christophe Jaillet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc: Resolve conflict between sparc v9 and M7 on usage of bit 9 of TTE
  sparc64: pci slots information is not populated in sysfs
  sparc: kernel: GRPCI2: Remove a useless memset
  sparc64: Setup sysfs to mark LDOM sockets, cores and threads correctly
2015-06-01 20:44:51 -07:00
Matthijs van Duin
7a6cb0abe1 ARM: dts: am335x-boneblack: disable RTC-only sleep to avoid hardware damage
Avoid entering "RTC-only mode" at poweroff. It is unsupported by most
versions of BeagleBone, and risks hardware damage.

The damaging configuration is having system-power-controller
without ti,pmic-shutdown-controller.

Reported-by: Matthijs van Duin <matthijsvanduin@gmail.com>
Tested-by: Matthijs van Duin <matthijsvanduin@gmail.com>
Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Johan Hovold <johan@kernel.org>
[Matthijs van Duin: added explanatory comments]
Signed-off-by: Matthijs van Duin <matthijsvanduin@gmail.com>
Fixes: http://bugs.elinux.org/issues/143
Cc: stable@vger.kernel.org # v3.12+
[tony@atomide.com: updated comments with the hardware breaking info]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-06-01 12:48:23 -07:00
Tero Kristo
b33558c906 ARM: dts: AM35xx: fix system control module clocks
New system control module layout for omap3 overlooked parts of the am35xx
configuration. Basically the am35xx clocks were not converted to use the
changed offsets, which caused weird boot warnings. The errors were not
fatal so far, so they were not caught earlier. Fixed by applying the
proper offsets for the AM35xx scm clocks.

Fixes: b8845074cf ("ARM: dts: omap3: add minimal l4 bus layout with...")

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Reported-by: Jeroen Hofstee <linux-arm@myspectrum.nl>
Cc: Paul Walmsley <paul@pwsan.com>
Tested-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-06-01 10:29:35 -07:00
Arnd Bergmann
9947c34cf7 - dts: mt8173: fix compatible string
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Merge tag 'v4.1-next-arm64-fixes' of https://github.com/mbgg/linux-mediatek into fixes

- dts: mt8173: fix compatible string

* tag 'v4.1-next-arm64-fixes' of https://github.com/mbgg/linux-mediatek:
  arm64: dts: mt8173-evb: fix model name
2015-06-01 17:06:51 +02:00
Arnd Bergmann
1a02b6627b Fix for Exynos3250 RTC wake-up interrupts after converting PMU
wakeup to stacked domains. This allows waking up the device from
 suspend to RAM using S3C RTC driver (the RTC on SoC).
 
 The patch should be applied some time ago, unfortunately
 it seems it slipped through fingers.
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Merge tag 'samsung-fixes-4.1-4' of https://github.com/krzk/linux into fixes

Merge "ARM: EXYNOS: Fix for 4.1, 4th" from Krzysztof Kozlowski:

Fix for Exynos3250 RTC wake-up interrupts after converting PMU
wakeup to stacked domains. This allows waking up the device from
suspend to RAM using S3C RTC driver (the RTC on SoC).

The patch should be applied some time ago, unfortunately
it seems it slipped through fingers.

* tag 'samsung-fixes-4.1-4' of https://github.com/krzk/linux:
  ARM: exynos: Fix wake-up interrupts for Exynos3250
2015-06-01 17:05:43 +02:00
Arnd Bergmann
8f1ab524b1 mvebu fixes for 4.1 (part 3)
Disable unused internal RTC for Mamba from linksys (Armada XP)
 And 2 commits fixing regressions on mvebu-mbus:
 - the first one for Kirkwood or Orion SoC
 - the second one for DMA when the platform have more than 4GB (only
   possible on Armada XP as far as I know)
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Merge tag 'mvebu-fixes-4.1-3' of git://git.infradead.org/linux-mvebu into fixes

Merge "mvebu fixes for 4.1 (part 3)" from Gregory CLEMENT:

Disable unused internal RTC for Mamba from linksys (Armada XP)
And 2 commits fixing regressions on mvebu-mbus:
- the first one for Kirkwood or Orion SoC
- the second one for DMA when the platform have more than 4GB (only
  possible on Armada XP as far as I know)

* tag 'mvebu-fixes-4.1-3' of git://git.infradead.org/linux-mvebu:
  Revert "bus: mvebu-mbus: make sure SDRAM CS for DMA don't overlap the MBus bridge window"
  bus: mvebu-mbus: do not set WIN_CTRL_SYNCBARRIER on non io-coherent platforms.
  ARM: mvebu: armada-xp-linksys-mamba: Disable internal RTC
2015-06-01 17:03:44 +02:00
Yingjoe Chen
692ef3ee36 arm64: dts: mt8173-evb: fix model name
Model name in mt8173-evb.dts doesn't follow dts convention (it should
be human readable model name). Fix it.

Fixes: b3a3724841 ("arm64: dts: Add mediatek MT8173 SoC and evaluation board dts and Makefile")
Cc: <stable@vger.kernel.org> # v4.0+
Signed-off-by: Yingjoe Chen <yingjoe.chen@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
2015-06-01 11:29:15 +02:00
Jonas Gorski
9dd6f1c166 MIPS: ralink: Fix clearing the illegal access interrupt
Due to a typo the illegal access interrupt is never cleared in by
the interupt handler, causing an effective deadlock on the first
illegal access.

This was broken since the code was introduced in 5433acd81e ("MIPS:
ralink: add illegal access driver"), but only exposed when the Kconfig
symbol was added, thus enabling the code.

Cc: <stable@vger.kernel.org>  [3.18+]
Fixes: a7b7aad383 ("MIPS: ralink: add missing symbol for RALINK_ILL_ACC")
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: John Crispin <blogic@openwrt.org>
Patchwork: https://patchwork.linux-mips.org/patch/10172/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-01 10:51:37 +02:00
Khalid Aziz
494e5b6fae sparc: Resolve conflict between sparc v9 and M7 on usage of bit 9 of TTE
sparc: Resolve conflict between sparc v9 and M7 on usage of bit 9 of TTE

Bit 9 of TTE is CV (Cacheable in V-cache) on sparc v9 processor while
the same bit 9 is MCDE (Memory Corruption Detection Enable) on M7
processor. This creates a conflicting usage of the same bit. Kernel
sets TTE.cv bit on all pages for sun4v architecture which works well
for sparc v9 but enables memory corruption detection on M7 processor
which is not the intent. This patch adds code to determine if kernel
is running on M7 processor and takes steps to not enable memory
corruption detection in TTE erroneously.

Signed-off-by: Khalid Aziz <khalid.aziz@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-31 22:15:01 -07:00
Eric Snowberg
f0c1a11737 sparc64: pci slots information is not populated in sysfs
Add PCI slot numbers within sysfs for PCIe hardware.  Larger
PCIe systems with nested PCI bridges and slots further
down on these bridges were not being populated within sysfs.
This will add ACPI style PCI slot numbers for these systems
since the OF 'slot-names' information is not available on
all PCIe platforms.

Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-by: Bob Picco <bob.picco@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-31 22:14:40 -07:00
Christophe Jaillet
8642ad1c7b sparc: kernel: GRPCI2: Remove a useless memset
grpci2priv is allocated using kzalloc, so there is no need to memset it.

Signed-off-by: Christophe Jaillet <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-31 22:14:05 -07:00
Marc Zyngier
fe931229c6 ARM: exynos: Fix wake-up interrupts for Exynos3250
Commit 8b283c0254 (ARM: exynos4/5: convert pmu wakeup to
stacked domains) changed the Exynos PMU code to use stacked
domains. This has led to a number of interrupt numbers to be
fixed.

In the meantime, support for Exynos 3250 was added, missing
the required change to this platform. This amounts to revert
ace283a04a (ARM: EXYNOS: Fix wrong hwirq of RTC interrupt
for Exynos3250 SoC), as the initial patch was right, just a
bit early...

Cc: Chanwoo Choi <cw00.choi@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Kukjin Kim <kgene@kernel.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
2015-06-01 09:08:34 +09:00
Linus Torvalds
36a8b9a774 Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
 "Three fixes this time around:

   - fix a memory leak which occurs when probing performance monitoring
     unit interrupts

   - fix handling of non-PMD aligned end of RAM causing boot failures

   - fix missing syscall trace exit path with syscall tracing enabled
     causing a kernel oops in the audit code"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: 8357/1: perf: fix memory leak when probing PMU PPIs
  ARM: fix missing syscall trace exit
  ARM: 8356/1: mm: handle non-pmd-aligned end of RAM
2015-05-31 12:20:59 -07:00
Linus Torvalds
e4ca714b63 Merge branch 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/ralf/linux
Pull MIPS fixes from Ralf Baechle:
 "MIPS fixes for 4.1 all across the tree"

* 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/ralf/linux:
  MIPS: strnlen_user.S: Fix a CPU_DADDI_WORKAROUNDS regression
  MIPS: BMIPS: Fix bmips_wr_vec()
  MIPS: ath79: fix build problem if CONFIG_BLK_DEV_INITRD is not set
  MIPS: Fuloong 2E: Replace CONFIG_USB_ISP1760_HCD by CONFIG_USB_ISP1760
  MIPS: irq: Use DECLARE_BITMAP
  ttyFDC: Fix to use native endian MMIO reads
  MIPS: Fix CDMM to use native endian MMIO reads
2015-05-31 12:03:42 -07:00
Linus Torvalds
50f5a1ee32 Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull turbostat tool fixes from Len Brown:
 "Just one minor kernel dependency in this batch -- added a #define to
  msr-index.h"

* 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: update version number to 4.7
  tools/power turbostat: allow running without cpu0
  tools/power turbostat: correctly decode of ENERGY_PERFORMANCE_BIAS
  tools/power turbostat: enable turbostat to support Knights Landing (KNL)
  tools/power turbostat: correctly display more than 2 threads/core
2015-05-31 11:39:25 -07:00
Linus Torvalds
aaa20fc233 PCI / ACPI fix for v4.1-rc6
This fixes a bug uncovered by a recent driver core change that
 modified the implementation of the ACPI_COMPANION_SET() macro to
 strictly rely on its second argument to be either NULL or a valid
 pointer to struct acpi_device.
 
 As it turns out, pcibios_root_bridge_prepare() on x86 and ia64
 works with the assumption that the only code path calling
 pci_create_root_bus() is pci_acpi_scan_root() and therefore
 the sysdata argument passed to it will always match the
 expectations of pcibios_root_bridge_prepare().  That need not
 be the case, however, and in particular it is not the case for
 the Xen pcifront driver that passes a pointer to its own private
 data strcture as sysdata to pci_scan_bus_parented() which then
 passes it to pci_create_root_bus() and it ends up being used
 incorrectly by pcibios_root_bridge_prepare().
 
 /
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Merge tag 'acpi-pci-4.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull PCI / ACPI fix from Rafael Wysocki:
 "This fixes a bug uncovered by a recent driver core change that
  modified the implementation of the ACPI_COMPANION_SET() macro to
  strictly rely on its second argument to be either NULL or a valid
  pointer to struct acpi_device.

  As it turns out, pcibios_root_bridge_prepare() on x86 and ia64 works
  with the assumption that the only code path calling pci_create_root_bus()
  is pci_acpi_scan_root() and therefore the sysdata argument passed to
  it will always match the expectations of pcibios_root_bridge_prepare().

  That need not be the case, however, and in particular it is not the
  case for the Xen pcifront driver that passes a pointer to its own
  private data strcture as sysdata to pci_scan_bus_parented() which then
  passes it to pci_create_root_bus() and it ends up being used incorrectly
  by pcibios_root_bridge_prepare()"

* tag 'acpi-pci-4.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PCI / ACPI: Do not set ACPI companions for host bridges with parents
2015-05-29 17:09:39 -07:00
Linus Torvalds
2a64517186 ARM: SoC fixes for 4.1-rc5
Two weeks worth of small bug fixes this time, nothing sticking out
 this time:
 
 - one defconfig change to adapt to a modified Kconfig symbol
 - two fixes for i.MX for backwards compatibility with older DT
   files that was accidentally broken
 - one regression fix for irq handling on pxa
 - three small dt files on omap, and one each for imx and exynos
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Two weeks worth of small bug fixes this time, nothing sticking out
  this time:

   - one defconfig change to adapt to a modified Kconfig symbol

   - two fixes for i.MX for backwards compatibility with older DT files
     that was accidentally broken

   - one regression fix for irq handling on pxa

   - three small dt files on omap, and one each for imx and exynos"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: multi_v7_defconfig: Replace CONFIG_USB_ISP1760_HCD by CONFIG_USB_ISP1760
  ARM: imx6: gpc: don't register power domain if DT data is missing
  ARM: imx6: allow booting with old DT
  ARM: dts: set display clock correctly for exynos4412-trats2
  ARM: pxa: pxa_cplds: signedness bug in probe
  ARM: dts: Fix WLAN interrupt line for AM335x EVM-SK
  ARM: dts: omap3-devkit8000: Fix NAND DT node
  ARM: dts: am335x-boneblack: disable RTC-only sleep
  ARM: dts: fix imx27 dtb build rule
  ARM: dts: imx27: only map 4 Kbyte for fec registers
2015-05-29 14:48:58 -07:00
Pavel Machek
8770d0898a ARM: dts: Fix n900 dts file to work around 4.1 touchscreen regression on n900
Fix dts to match what the Linux kernel expects. This works around
touchscreen problems in 4.1 linux on Nokia n900.

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-05-29 13:19:02 -07:00
Maciej W. Rozycki
c4fca4fdea MIPS: strnlen_user.S: Fix a CPU_DADDI_WORKAROUNDS regression
Correct a regression introduced with 8453eebd [MIPS: Fix strnlen_user()
return value in case of overlong strings.] causing assembler warnings
and broken code generated in __strnlen_kernel_nocheck_asm:

arch/mips/lib/strnlen_user.S: Assembler messages:
arch/mips/lib/strnlen_user.S:64: Warning: Macro instruction expanded into multiple instructions in a branch delay slot

with the CPU_DADDI_WORKAROUNDS option set, resulting in the function
looping indefinitely upon mounting NFS root.

Use conditional assembly to avoid a microMIPS code size regression.
Using $at unconditionally would cause such a regression as there are no
16-bit instruction encodings available for ALU operations using this
register.  Using $v1 unconditionally would produce short microMIPS
encodings, but would prevent this register from being used across calls
to this function.

The extra LI operation introduced is free, replacing a NOP originally
scheduled into the delay slot of the branch that follows.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10205/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-05-29 20:23:58 +02:00
Petri Gynther
57b4175823 MIPS: BMIPS: Fix bmips_wr_vec()
bmips_wr_vec() copies exception vector code from start to dst.

The call to dma_cache_wback() needs to flush (end-start) bytes,
starting at dst, from write-back cache to memory.

Signed-off-by: Petri Gynther <pgynther@google.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Kevin Cernekee <cernekee@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10193/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-05-29 20:23:43 +02:00
Laurent Fasnacht
556b6629c1 MIPS: ath79: fix build problem if CONFIG_BLK_DEV_INITRD is not set
initrd_start is defined in init/do_mounts_initrd.c, which is only
included in kernel if CONFIG_BLK_DEV_INITRD=y.

Signed-off-by: Laurent Fasnacht <l@libres.ch>
Cc: linux-mips@linux-mips.org
Cc: trivial@kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10198/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-05-29 20:23:36 +02:00
Tony Lindgren
1b205c535b ARM: dts: Fix dm816x to use right compatible flag for MUSB
With commit 3e457371f4 ("usb: musb: Fix fifo reads for dm816x with
musb_dsps") we need to use the right compatible flag to avoid issues
with FIFO reads.

Cc: Bin Liu <binmlist@gmail.com>
Cc: Brian Hutchinson <b.hutchman@gmail.com>
Cc: George Cherian <george.cherian@ti.com>
Fixes: 3e457371f4 ("usb: musb: Fix fifo reads for dm816x with musb_dsps")
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-05-29 09:59:42 -07:00
Geert Uytterhoeven
5530c84f62 ARM: multi_v7_defconfig: Replace CONFIG_USB_ISP1760_HCD by CONFIG_USB_ISP1760
Since commit 100832abf0 ("usb: isp1760: Make HCD support
optional"), CONFIG_USB_ISP1760_HCD is automatically selected when
needed.  Enabling that option in the defconfig is now a no-op, and no
longer enables ISP1760 HCD support.

Re-enable the ISP1760 driver in the defconfig by enabling
USB_ISP1760_HOST_ROLE instead.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-05-29 14:31:35 +02:00
Arnd Bergmann
7bbfbb9866 The i.MX fixes for 4.1, 3rd round:
It includes a couple of fixes for i.MX6 GPC code to let the new kernel
 be able to boot with old DTBs:
 
  - Booting v4.1-rc kernel with old DTBs will fail with a fat warning
    (require low-level debug to be seen), due to the adoption of stacked
    IRQ domain.  The first fix improves the situation by allowing kernel
    boot up with old DTBs, although suspend/resume still breaks.
 
  - Booting new kernel with old DTBs that do not have power-domain info
    will result in a hang.  The second patch fixes the hang by skipping
    the kernel power-domain registration if DTB has no power-domain info.
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Merge tag 'imx-fixes-4.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes

Merge "The i.MX fixes for 4.1, 3rd round" from Shawn Guo:

It includes a couple of fixes for i.MX6 GPC code to let the new kernel
be able to boot with old DTBs:

 - Booting v4.1-rc kernel with old DTBs will fail with a fat warning
   (require low-level debug to be seen), due to the adoption of stacked
   IRQ domain.  The first fix improves the situation by allowing kernel
   boot up with old DTBs, although suspend/resume still breaks.

 - Booting new kernel with old DTBs that do not have power-domain info
   will result in a hang.  The second patch fixes the hang by skipping
   the kernel power-domain registration if DTB has no power-domain info.

* tag 'imx-fixes-4.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: imx6: gpc: don't register power domain if DT data is missing
  ARM: imx6: allow booting with old DT
2015-05-29 14:30:35 +02:00
Arnd Bergmann
4eaf9ed74c Samsung fix for v4.1
- Set display clock correctly for exynos4412-trats2
   : fix the following error
 
     exynos-drm: No connectors reported connected with modes
     [drm] Cannot find any crtc or sizes - going 1024x768
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Merge tag 'samsung-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes

Merge "Samsung fix for v4.1" from Kukjin Kim:

- Set display clock correctly for exynos4412-trats2
  : fix the following error

    exynos-drm: No connectors reported connected with modes
    [drm] Cannot find any crtc or sizes - going 1024x768

* tag 'samsung-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: dts: set display clock correctly for exynos4412-trats2
2015-05-29 14:29:37 +02:00
Ingo Molnar
927392d73a x86/boot: Add CONFIG_PARAVIRT_SPINLOCKS quirk to arch/x86/boot/compressed/misc.h
Linus reported the following new warning on x86 allmodconfig with GCC 5.1:

  > ./arch/x86/include/asm/spinlock.h: In function ‘arch_spin_lock’:
  > ./arch/x86/include/asm/spinlock.h:119:3: warning: implicit declaration
  > of function ‘__ticket_lock_spinning’ [-Wimplicit-function-declaration]
  >    __ticket_lock_spinning(lock, inc.tail);
  >    ^

This warning triggers because of these hacks in misc.h:

  /*
   * we have to be careful, because no indirections are allowed here, and
   * paravirt_ops is a kind of one. As it will only run in baremetal anyway,
   * we just keep it from happening
   */
  #undef CONFIG_PARAVIRT
  #undef CONFIG_KASAN

But these hacks were not updated when CONFIG_PARAVIRT_SPINLOCKS was added,
and eventually (with the introduction of queued paravirt spinlocks in
recent kernels) this created an invalid Kconfig combination and broke
the build.

So add a CONFIG_PARAVIRT_SPINLOCKS #undef line as well.

Also remove the _ASM_X86_DESC_H quirk: that undocumented quirk
was originally added ages ago, in:

  099e137726 ("x86: use ELF format in compressed images.")

and I went back to that kernel (and fixed up the main Makefile
which didn't build anymore) and checked what failure it
avoided: it avoided an include file dependencies related
build failure related to our old x86-platforms code.

That old code is long gone, the header dependencies got cleaned
up, and the build does not fail anymore with the totality of
asm/desc.h included - so remove the quirk.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-05-29 11:06:37 +02:00
Jan Beulich
7ba554b5ac x86/asm/entry/32: Really make user_mode() work correctly for VM86 mode
While commit efa7045103 ("x86/asm/entry: Make user_mode() work
correctly if regs came from VM86 mode") claims that "user_mode()
is now identical to user_mode_vm()", this wasn't actually the
case - no prior commit made it so.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/5566EB0D020000780007E655@mail.emea.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-05-29 09:46:40 +02:00
Linus Torvalds
ace6a22a9f Xtensa patches for 4.1
This patch fixes allmodconfig, which fails to build due to
 missing dma_alloc_attrs() and dma_free_attrs() functions.
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Merge tag 'xtensa-20150526' of git://github.com/czankel/xtensa-linux

Pull Xtensa fix from Chris Zankel:
 "This fixes allmodconfig, which fails to build due to missing
  dma_alloc_attrs() and dma_free_attrs() functions"

* tag 'xtensa-20150526' of git://github.com/czankel/xtensa-linux:
  xtensa: Provide dummy dma_alloc_attrs() and dma_free_attrs()
2015-05-28 13:28:24 -07:00
Tony Lindgren
d8a50941c9 ARM: OMAP3: Fix booting with thumb2 kernel
We get a NULL pointer dereference on omap3 for thumb2 compiled kernels:

Internal error: Oops: 80000005 [#1] SMP THUMB2
...
[<c046497b>] (_raw_spin_unlock_irqrestore) from [<c0024375>]
(omap3_enter_idle_bm+0xc5/0x178)
[<c0024375>] (omap3_enter_idle_bm) from [<c0374e63>]
(cpuidle_enter_state+0x77/0x27c)
[<c0374e63>] (cpuidle_enter_state) from [<c00627f1>]
(cpu_startup_entry+0x155/0x23c)
[<c00627f1>] (cpu_startup_entry) from [<c06b9a47>]
(start_kernel+0x32f/0x338)
[<c06b9a47>] (start_kernel) from [<8000807f>] (0x8000807f)

The power management related assembly on omaps needs to interact with
ARM mode bootrom code, so we need to keep most of the related assembly
in ARM mode.

Turns out this error is because of missing ENDPROC for assembly code
as suggested by Stephen Boyd <sboyd@codeaurora.org>. Let's fix the
problem by adding ENDPROC in two places to sleep34xx.S.

Let's also remove the now duplicate custom code for mode switching.
This has been unnecessary since commit 6ebbf2ce43 ("ARM: convert
all "mov.* pc, reg" to "bx reg" for ARMv6+").

And let's also remove the comments about local variables, they are
now just confusing after the ENDPROC.

The reason why ENDPROC makes a difference is it sets .type and then
the compiler knows what to do with the thumb bit as explained at:

https://wiki.ubuntu.com/ARM/Thumb2PortingHowto

Reported-by: Kevin Hilman <khilman@kernel.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-05-28 07:22:08 -07:00
Imre Kaloz
2ff9ab4c7b ARM: mvebu: armada-xp-linksys-mamba: Disable internal RTC
The Mamba (like the OpenBlocks AX3) doesn't have a crystal
connected to the internal RTC - let's prevent the kernel from
probing it.

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Cc: <stable@vger.kernel.org> # v4.0 +
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2015-05-28 11:13:44 +02:00
Rafael J. Wysocki
dc4fdaf0e4 PCI / ACPI: Do not set ACPI companions for host bridges with parents
Commit 97badf873a (device property: Make it possible to use
secondary firmware nodes) uncovered a bug in the x86 (and ia64) PCI
host bridge initialization code that assumes bridge->bus->sysdata
to always point to a struct pci_sysdata object which need not be
the case (in particular, the Xen PCI frontend driver sets it to point
to a different data type).  If it is not the case, an incorrect
pointer (or a piece of data that is not a pointer at all) will be
passed to ACPI_COMPANION_SET() and that may cause interesting
breakage to happen going forward.

To work around this problem use the observation that the ACPI
host bridge initialization always passes NULL as parent to
pci_create_root_bus(), so if pcibios_root_bridge_prepare() sees
a non-NULL parent of the bridge, it should not attempt to set
an ACPI companion for it, because that means that
pci_create_root_bus() has been called by someone else.

Fixes: 97badf873a (device property: Make it possible to use secondary firmware nodes)
Reported-and-tested-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
2015-05-28 01:39:53 +02:00
Dasaratharaman Chandramouli
fb5d432722 tools/power turbostat: enable turbostat to support Knights Landing (KNL)
Changes mainly to account for minor differences in Knights Landing(KNL):
1. KNL supports C1 and C6 core states.
2. KNL supports PC2, PC3 and PC6 package states.
3. KNL has a different encoding of the TURBO_RATIO_LIMIT MSR

Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2015-05-27 18:03:57 -04:00
Linus Torvalds
8f98bcdf8f Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Don't use MMIO on certain iwlwifi devices otherwise we get a
    firmware crash.

 2) Don't corrupt the GRO lists of mac80211 contexts by doing sends via
    timer interrupt, from Johannes Berg.

 3) SKB tailroom is miscalculated in AP_VLAN crypto code, from Michal
    Kazior.

 4) Fix fw_status memory leak in iwlwifi, from Haim Dreyfuss.

 5) Fix use after free in iwl_mvm_d0i3_enable_tx(), from Eliad Peller.

 6) JIT'ing of large BPF programs is broken on x86, from Alexei
    Starovoitov.

 7) EMAC driver ethtool register dump size is miscalculated, from Ivan
    Mikhaylov.

 8) Fix PHY initial link mode when autonegotiation is disabled in
    amd-xgbe, from Tom Lendacky.

 9) Fix NULL deref on SOCK_DEAD socket in AF_UNIX and CAIF protocols,
    from Mark Salyzyn.

10) credit_bytes not initialized properly in xen-netback, from Ross
   Lagerwall.

11) Fallback from MSI-X to INTx interrupts not handled properly in mlx4
    driver, fix from Benjamin Poirier.

12) Perform ->attach() after binding dev->qdisc in packet scheduler,
    otherwise we can crash.  From Cong WANG.

13) Don't clobber data in sctp_v4_map_v6().  From Jason Gunthorpe.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (30 commits)
  sctp: Fix mangled IPv4 addresses on a IPv6 listening socket
  net_sched: invoke ->attach() after setting dev->qdisc
  xen-netfront: properly destroy queues when removing device
  mlx4_core: Fix fallback from MSI-X to INTx
  xen/netback: Properly initialize credit_bytes
  net: netxen: correct sysfs bin attribute return code
  tools: bpf_jit_disasm: fix segfault on disabled debugging log output
  unix/caif: sk_socket can disappear when state is unlocked
  amd-xgbe-phy: Fix initial mode when autoneg is disabled
  net: dp83640: fix improper double spin locking.
  net: dp83640: reinforce locking rules.
  net: dp83640: fix broken calibration routine.
  net: stmmac: create one debugfs dir per net-device
  net/ibm/emac: fix size of emac dump memory areas
  x86: bpf_jit: fix compilation of large bpf programs
  net: phy: bcm7xxx: Fix 7425 PHY ID and flags
  iwlwifi: mvm: avoid use-after-free on iwl_mvm_d0i3_enable_tx()
  iwlwifi: mvm: clean net-detect info if device was reset during suspend
  iwlwifi: mvm: take the UCODE_DOWN reference when resuming
  iwlwifi: mvm: BT Coex - duplicate the command if sent ASYNC
  ...
2015-05-27 13:41:13 -07:00