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Commit Graph

60664 Commits

Author SHA1 Message Date
Ralf Baechle
cba2efb64b MIPS: PNX8550: Fix section mismatch
Triggered by pnx8550-jbs_defconfig and pnx8550-stb810_defconfig:

WARNING: vmlinux.o(.text+0xc0c): Section mismatch in reference from the function prom_getcmdline() to the variable .init.data:arcs_cmdline
The function prom_getcmdline() references
the variable __initdata arcs_cmdline.
This is often because prom_getcmdline lacks a __initdata
annotation or the annotation of arcs_cmdline is wrong.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-10-20 15:00:18 +01:00
Ralf Baechle
5db6acdb27 MIPS: 32-bit: Fix number of argument to epoll_wait.
The number of arguments only matters for syscalls with stack arguments that
is using 5 or more argument slots so this is just cosmetic fix.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-10-20 15:00:18 +01:00
Ralf Baechle
901f616940 MIPS: IP27: Sort out section mismatch.
WARNING: vmlinux.o(.text+0x3059f8): Section mismatch in reference from the function pcibios_plat_dev_init() to the function .devinit.text:request_bridge_irq()
The function pcibios_plat_dev_init() references
the function __devinit request_bridge_irq().
This is often because pcibios_plat_dev_init lacks a __devinit
annotation or the annotation of request_bridge_irq is wrong.

Fixing this one leads to:

WARNING: vmlinux.o(.text+0x1790): Section mismatch in reference from the function request_bridge_irq() to the function .devinit.text:register_bridge_irq()
The function request_bridge_irq() references
the function __devinit register_bridge_irq().
This is often because request_bridge_irq lacks a __devinit
annotation or the annotation of register_bridge_irq is wrong.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-10-20 15:00:18 +01:00
Ralf Baechle
d9cdc901af MIPS: cache: Provide cache flush operations for XFS
Until now flush_kernel_vmap_range() and invalidate_kernel_vmap_range() did
not exist on MIPS resulting in heavy cache corruption on XFS filesystems.

Left for the post-3.0 time: optimization and make this work with highmem,
too.  Since the combination of highmem + cache aliases atm doesn't work
this isn't a regression.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/2505/
2011-10-20 15:00:18 +01:00
Linus Torvalds
8bc03e8f3a Merge branch 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm
* 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm:
  ARM: 7128/1: vic: Don't write to the read-only register VIC_IRQ_STATUS
  ARM: 7122/1: localtimer: add header linux/errno.h explicitly
  ARM: 7117/1: perf: fix HW_CACHE_* events on Cortex-A9
  ARM: 7113/1: mm: Align bank start to MAX_ORDER_NR_PAGES
2011-10-16 13:08:27 -07:00
Zoltan Devai
f8be12d153 ARM: 7128/1: vic: Don't write to the read-only register VIC_IRQ_STATUS
This is unneeded and causes an abort on the SPMP8000 platform.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Zoltan Devai <zoss@devai.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-10-15 11:04:22 +01:00
Shawn Guo
bb1ac3ec95 ARM: 7122/1: localtimer: add header linux/errno.h explicitly
Per the text in  Documentation/SubmitChecklist as below, we should
explicitly have header linux/errno.h in localtimer.h for ENXIO
reference.

1: If you use a facility then #include the file that defines/declares
   that facility.  Don't depend on other header files pulling in ones
   that you use.

Otherwise, we may run into some compiling error like the following one,
if any file includes localtimer.h without CONFIG_LOCAL_TIMERS defined.

  arch/arm/include/asm/localtimer.h: In function ‘local_timer_setup’:
  arch/arm/include/asm/localtimer.h:53:10: error: ‘ENXIO’ undeclared (first use in this function)

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-10-15 11:04:22 +01:00
Will Deacon
29a541f6c1 ARM: 7117/1: perf: fix HW_CACHE_* events on Cortex-A9
Using COHERENT_LINE_{MISS,HIT} for cache misses and references
respectively is completely wrong. Instead, use the L1D events which
are a better and more useful approximation despite ignoring instruction
traffic.

Reported-by: Alasdair Grant <alasdair.grant@arm.com>
Reported-by: Matt Horsnell <matt.horsnell@arm.com>
Reported-by: Michael Williams <michael.williams@arm.com>
Cc: stable@kernel.org
Cc: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-10-15 11:04:22 +01:00
Linus Torvalds
95bc156c62 Merge branch 'stable' of git://github.com/cmetcalf-tilera/linux-tile
* 'stable' of git://github.com/cmetcalf-tilera/linux-tile:
  tile: revert change from <asm/atomic.h> to <linux/atomic.h> in asm files
2011-10-14 16:59:11 +12:00
Linus Torvalds
2ad53110d6 Merge branch 'x86-urgent-for-linus' of git://tesla.tglx.de/git/linux-2.6-tip
* 'x86-urgent-for-linus' of git://tesla.tglx.de/git/linux-2.6-tip:
  x86: Default to vsyscall=native for now
2011-10-14 16:54:56 +12:00
Mika Westerberg
153b19a3b9 x86, mrst: use a temporary variable for SFI irq
SFI tables reside in RAM and should not be modified once they are
written.  Current code went to set pentry->irq to zero which causes
subsequent reads to fail with invalid SFI table checksum.  This will
break kexec as the second kernel fails to validate SFI tables.

To fix this we use temporary variable for irq number.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-10-14 16:53:27 +12:00
Chris Metcalf
d52104b29a tile: revert change from <asm/atomic.h> to <linux/atomic.h> in asm files
The 32-bit TILEPro support uses some #defines in <asm/atomic_32.h>
for atomic support routines in assembly.  To make this more explicit,
I've turned those includes into includes of <asm/atomic_32.h>, which
should hopefully make it clear that they shouldn't be bombed into
<linux/atomic.h> in any cleanups.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2011-10-13 08:25:01 -04:00
Adrian Bunk
2b666859ec x86: Default to vsyscall=native for now
This UML breakage:

  linux-2.6.30.1[3800] vsyscall fault (exploit attempt?) ip:ffffffffff600000 cs:33 sp:7fbfb9c498 ax:ffffffffff600000 si:0 di:606790
  linux-2.6.30.1[3856] vsyscall fault (exploit attempt?) ip:ffffffffff600000 cs:33 sp:7fbfb13168 ax:ffffffffff600000 si:0 di:606790

Is caused by commit 3ae36655 ("x86-64: Rework vsyscall emulation and add
vsyscall= parameter") - the vsyscall emulation code is not fully cooked
yet as UML relies on some rather fragile SIGSEGV semantics.

Linus suggested in https://lkml.org/lkml/2011/8/9/376 to default
to vsyscall=native for now, this patch implements that.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Andrew Lutomirski <luto@mit.edu>
Cc: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/r/20111005214047.GE14406@localhost.pp.htv.fi
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-10-11 08:23:34 +02:00
Linus Torvalds
bbf5e9743f Merge branch 'fixes' of git://git.linaro.org/people/arnd/arm-soc
* 'fixes' of git://git.linaro.org/people/arnd/arm-soc:
  ARM: mach-ux500: enable fix for ARM errata 754322
  ARM: OMAP: musb: Remove a redundant omap4430_phy_init call in usb_musb_init
  ARM: OMAP: Fix i2c init for twl4030
  ARM: OMAP4: MMC: fix power and audio issue, decouple USBC1 from MMC1
2011-10-10 14:48:27 +12:00
Marc Dietrich
3faf12cd86 ARM: tegra: fix compilation error due to mach/hardware.h removal
This fixes a compilation error in cpu-tegra.c which was introduced in
dc8d966bcc ("ARM: convert PCI defines to variables") which removed the
now obsolete mach/hardware.h from the mach-tegra subtree.

Signed-off-by: Marc Dietrich <marvin24@gmx.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-10-10 14:46:25 +12:00
Linus Torvalds
a24d025a08 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (29 commits)
  MIPS: Call oops_enter, oops_exit in die
  staging/octeon: Software should check the checksum of no tcp/udp packets
  MIPS: Octeon: Enable C0_UserLocal probing.
  MIPS: No branches in delay slots for huge pages in handle_tlbl
  MIPS: Don't clobber CP0_STATUS value for CONFIG_MIPS_MT_SMTC
  MIPS: Octeon: Select CONFIG_HOLES_IN_ZONE
  MIPS: PM: Use struct syscore_ops instead of sysdevs for PM (v2)
  MIPS: Compat: Use 32-bit wrapper for compat_sys_futex.
  MIPS: Do not use EXTRA_CFLAGS
  MIPS: Alchemy: DB1200: Disable cascade IRQ in handler
  SERIAL: Lantiq: Set timeout in uart_port
  MIPS: Lantiq: Fix setting the PCI bus speed on AR9
  MIPS: Lantiq: Fix external interrupt sources
  MIPS: tlbex: Fix build error in R3000 code.
  MIPS: Alchemy: Include Au1100 in PM code.
  MIPS: Alchemy: Fix typo in MAC0 registration
  MIPS: MSP71xx: Fix build error.
  MIPS: Handle __put_user() sleeping.
  MIPS: Allow forced irq threading
  MIPS: i8259: Mark cascade interrupt non-threaded
  ...
2011-10-10 14:39:03 +12:00
Arnd Bergmann
aab3a70e98 Merge branch 'omap/fixes-for-3.1' into fixes 2011-10-08 22:21:07 +02:00
srinidhi kasagar
98e87d57aa ARM: mach-ux500: enable fix for ARM errata 754322
This applies ARM errata fix 754322 for all ux500 platforms.

Cc: stable@kernel.org
Signed-off-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2011-10-07 17:38:35 +02:00
Paul Menzel
29cf7a30f8 x86/PCI: use host bridge _CRS info on ASUS M2V-MX SE
In summary, this DMI quirk uses the _CRS info by default for the ASUS
M2V-MX SE by turning on `pci=use_crs` and is similar to the quirk
added by commit 2491762cfb ("x86/PCI: use host bridge _CRS info on
ASRock ALiveSATA2-GLAN") whose commit message should be read for further
information.

Since commit 3e3da00c01 ("x86/pci: AMD one chain system to use pci
read out res") Linux gives the following oops:

    parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE]
    HDA Intel 0000:20:01.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
    HDA Intel 0000:20:01.0: setting latency timer to 64
    BUG: unable to handle kernel paging request at ffffc90011c08000
    IP: [<ffffffffa0578402>] azx_probe+0x3ad/0x86b [snd_hda_intel]
    PGD 13781a067 PUD 13781b067 PMD 1300ba067 PTE 800000fd00000173
    Oops: 0009 [#1] SMP
    last sysfs file: /sys/module/snd_pcm/initstate
    CPU 0
    Modules linked in: snd_hda_intel(+) snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event tpm_tis tpm snd_seq tpm_bios psmouse parport_pc snd_timer snd_seq_device parport processor evdev snd i2c_viapro thermal_sys amd64_edac_mod k8temp i2c_core soundcore shpchp pcspkr serio_raw asus_atk0110 pci_hotplug edac_core button snd_page_alloc edac_mce_amd ext3 jbd mbcache sha256_generic cryptd aes_x86_64 aes_generic cbc dm_crypt dm_mod raid1 md_mod usbhid hid sg sd_mod crc_t10dif sr_mod cdrom ata_generic uhci_hcd sata_via pata_via libata ehci_hcd usbcore scsi_mod via_rhine mii nls_base [last unloaded: scsi_wait_scan]
    Pid: 1153, comm: work_for_cpu Not tainted 2.6.37-1-amd64 #1 M2V-MX SE/System Product Name
    RIP: 0010:[<ffffffffa0578402>]  [<ffffffffa0578402>] azx_probe+0x3ad/0x86b [snd_hda_intel]
    RSP: 0018:ffff88013153fe50  EFLAGS: 00010286
    RAX: ffffc90011c08000 RBX: ffff88013029ec00 RCX: 0000000000000006
    RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246
    RBP: ffff88013341d000 R08: 0000000000000000 R09: 0000000000000040
    R10: 0000000000000286 R11: 0000000000003731 R12: ffff88013029c400
    R13: 0000000000000000 R14: 0000000000000000 R15: ffff88013341d090
    FS:  0000000000000000(0000) GS:ffff8800bfc00000(0000) knlGS:00000000f7610ab0
    CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
    CR2: ffffc90011c08000 CR3: 0000000132f57000 CR4: 00000000000006f0
    DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
    Process work_for_cpu (pid: 1153, threadinfo ffff88013153e000, task ffff8801303c86c0)
    Stack:
     0000000000000005 ffffffff8123ad65 00000000000136c0 ffff88013029c400
     ffff8801303c8998 ffff88013341d000 ffff88013341d090 ffff8801322d9dc8
     ffff88013341d208 0000000000000000 0000000000000000 ffffffff811ad232
    Call Trace:
     [<ffffffff8123ad65>] ? __pm_runtime_set_status+0x162/0x186
     [<ffffffff811ad232>] ? local_pci_probe+0x49/0x92
     [<ffffffff8105afc5>] ? do_work_for_cpu+0x0/0x1b
     [<ffffffff8105afc5>] ? do_work_for_cpu+0x0/0x1b
     [<ffffffff8105afd0>] ? do_work_for_cpu+0xb/0x1b
     [<ffffffff8105fd3f>] ? kthread+0x7a/0x82
     [<ffffffff8100a824>] ? kernel_thread_helper+0x4/0x10
     [<ffffffff8105fcc5>] ? kthread+0x0/0x82
     [<ffffffff8100a820>] ? kernel_thread_helper+0x0/0x10
    Code: f4 01 00 00 ef 31 f6 48 89 df e8 29 dd ff ff 85 c0 0f 88 2b 03 00 00 48 89 ef e8 b4 39 c3 e0 8b 7b 40 e8 fc 9d b1 e0 48 8b 43 38 <66> 8b 10 66 89 14 24 8b 43 14 83 e8 03 83 f8 01 77 32 31 d2 be
    RIP  [<ffffffffa0578402>] azx_probe+0x3ad/0x86b [snd_hda_intel]
     RSP <ffff88013153fe50>
    CR2: ffffc90011c08000
    ---[ end trace 8d1f3ebc136437fd ]---

Trusting the ACPI _CRS information (`pci=use_crs`) fixes this problem.

    $ dmesg | grep -i crs # with the quirk
    PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug

The match has to be against the DMI board entries though since the vendor entries are not populated.

    DMI: System manufacturer System Product Name/M2V-MX SE, BIOS 0304    10/30/2007

This quirk should be removed when `pci=use_crs` is enabled for machines
from 2006 or earlier or some other solution is implemented.

Using coreboot [1] with this board the problem does not exist but this
quirk also does not affect it either. To be safe though the check is
tightened to only take effect when the BIOS from American Megatrends is
used.

        15:13 < ruik> but coreboot does not need that
        15:13 < ruik> because i have there only one root bus
        15:13 < ruik> the audio is behind a bridge

        $ sudo dmidecode
        BIOS Information
                Vendor: American Megatrends Inc.
                Version: 0304
                Release Date: 10/30/2007

[1] http://www.coreboot.org/

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=30552

Cc: stable@kernel.org (2.6.34)
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: x86@kernel.org
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-10-06 16:10:37 -07:00
Nathan Lynch
8742cd2347 MIPS: Call oops_enter, oops_exit in die
This allows pause_on_oops and mtdoops to work.

Signed-off-by: Nathan Lynch <ntl@pobox.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2810/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-10-01 20:36:04 +01:00
Linus Walleij
002ea9eefe ARM: 7113/1: mm: Align bank start to MAX_ORDER_NR_PAGES
The VM subsystem assumes that there are valid memmap entries from
the bank start aligned to MAX_ORDER_NR_PAGES.

On the Ux500 we have a lot of mem=N arguments on the commandline
triggering this bug several times over and causing kernel
oops messages.

Cc: stable@kernel.org
Cc: Michael Bohan <mbohan@codeaurora.org>
Cc: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Johan Palsson <johan.palsson@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-10-01 17:49:18 +01:00
Linus Torvalds
f72a209a3e Merge branches 'irq-urgent-for-linus', 'x86-urgent-for-linus' and 'sched-urgent-for-linus' of git://tesla.tglx.de/git/linux-2.6-tip
* 'irq-urgent-for-linus' of git://tesla.tglx.de/git/linux-2.6-tip:
  irq: Fix check for already initialized irq_domain in irq_domain_add
  irq: Add declaration of irq_domain_simple_ops to irqdomain.h

* 'x86-urgent-for-linus' of git://tesla.tglx.de/git/linux-2.6-tip:
  x86/rtc: Don't recursively acquire rtc_lock

* 'sched-urgent-for-linus' of git://tesla.tglx.de/git/linux-2.6-tip:
  posix-cpu-timers: Cure SMP wobbles
  sched: Fix up wchan borkage
  sched/rt: Migrate equal priority tasks to available CPUs
2011-10-01 08:37:25 -07:00
Axel Lin
b8e111a74d ARM: OMAP: musb: Remove a redundant omap4430_phy_init call in usb_musb_init
Current code calls omap4430_phy_init() twice in usb_musb_init().
Calling omap4430_phy_init() once is enough.
This patch removes the first omap4430_phy_init() call, which using an
uninitialized pointer as parameter.

This patch elimates below build warning:
arch/arm/mach-omap2/usb-musb.c: In function 'usb_musb_init':
arch/arm/mach-omap2/usb-musb.c:141: warning: 'dev' may be used uninitialized in this function

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Bjarne Steinsbo <bsteinsbo@gmail.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-09-30 11:05:55 -07:00
Tony Lindgren
bfd46a543f ARM: OMAP: Fix i2c init for twl4030
Looks like 2600 kHz rate does not work reliably on 2430,
so just use the 100 kHz rate.

Otherwise the system often fails to boot properly with:

omap_i2c omap_i2c.2: timeout waiting for bus ready
omap_i2c omap_i2c.2: timeout waiting for bus ready
twl: i2c_write failed to transfer all messages
omap_i2c omap_i2c.2: timeout waiting for bus ready
twl: i2c_write failed to transfer all messages
omap_i2c omap_i2c.2: timeout waiting for bus ready
twl: i2c_write failed to transfer all messages
twl: clock init err [-110]
omap_i2c omap_i2c.2: timeout waiting for bus ready
twl: i2c_write failed to transfer all messages
TWL4030 Unable to unlock IDCODE registers --110

Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-09-30 11:05:55 -07:00
Bryan Buckley
3696d303d6 ARM: OMAP4: MMC: fix power and audio issue, decouple USBC1 from MMC1
Remove OMAP4_USBC1_ICUSB_PWRDNZ_MASK during enable/disable PWRDNZ mode for
MMC1_PBIAS and associated extended-drain MMC1 I/O cell. This is in accordance
with the control module programming guide. This fixes a bug where if trying to
use gpio_98 or gpio_99 and MMC1 at the same time the GPIO signal will be
affected by a changing SDMMC1_VDDS.

Software must keep MMC1_PBIAS cell and MMC1_IO cell PWRDNZ signals low whenever
SDMMC1_VDDS ramps up/down or changes for cell protection purposes.

MMC1 is based on SDMMC1_VDDS whereas USBC1 is based on SIM_VDDS therefore
they can operate independently.

Signed-off-by: Bryan Buckley <bryan.buckley@ti.com>
Acked-by:  Kishore Kadiyala <kishore.kadiyala@ti.com>
Tested-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-09-30 11:05:55 -07:00
Linus Torvalds
0ecdb12a7a Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] cio: fix cio_tpi ignoring adapter interrupts
  [S390] gmap: always up mmap_sem properly
  [S390] Do not clobber personality flags on exec
2011-09-29 19:28:26 -07:00
Linus Torvalds
5fe858b5b7 Merge git://github.com/davem330/sparc
* git://github.com/davem330/sparc:
  sparc64: Force the execute bit in OpenFirmware's translation entries.
  sparc: Make '-p' boot option meaningful again.
  sparc, exec: remove redundant addr_limit assignment
  sparc64: Future proof Niagara cpu detection.
2011-09-29 19:24:33 -07:00
Benjamin Herrenschmidt
16fa42affd powerpc: Fix device-tree matching for Apple U4 bridge
Apple Quad G5 has some oddity in it's device-tree which causes the new
generic matching code to fail to relate nodes for PCI-E devices below U4
with their respective struct pci_dev.  This breaks graphics on those
machines among others.

This fixes it using a quirk which copies the node pointer from the host
bridge for the root complex, which makes the generic code work for the
children afterward.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-29 19:22:40 -07:00
David S. Miller
f4142cba4e sparc64: Force the execute bit in OpenFirmware's translation entries.
In the OF 'translations' property, the template TTEs in the mappings
never specify the executable bit.  This is the case even though some
of these mappings are for OF's code segment.

Therefore, we need to force the execute bit on in every mapping.

This problem can only really trigger on Niagara/sun4v machines and the
history behind this is a little complicated.

Previous to sun4v, the sun4u TTE entries lacked a hardware execute
permission bit.  So OF didn't have to ever worry about setting
anything to handle executable pages.  Any valid TTE loaded into the
I-TLB would be respected by the chip.

But sun4v Niagara chips have a real hardware enforced executable bit
in their TTEs.  So it has to be set or else the I-TLB throws an
instruction access exception with type code 6 (protection violation).

We've been extremely fortunate to not get bitten by this in the past.

The best I can tell is that the OF's mappings for it's executable code
were mapped using permanent locked mappings on sun4v in the past.
Therefore, the fact that we didn't have the exec bit set in the OF
translations we would use did not matter in practice.

Thanks to Greg Onufer for helping me track this down.

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-09-29 12:18:59 -07:00
Linus Torvalds
858b1814b8 Merge branch 'samsung-fixes-3' of git://github.com/kgene/linux-samsung
* 'samsung-fixes-3' of git://github.com/kgene/linux-samsung:
  ARM: EXYNOS4: Rename sclk_cam clocks for FIMC driver
  ARM: S5PV210: Rename sclk_cam clocks for FIMC media driver
  ARM: S5P: fix incorrect loop iterator usage on gpio-interrupt
  ARM: S3C2443: Fix bit-reset in setrate of clk_armdiv
2011-09-26 16:29:26 -07:00
Sylwester Nawrocki
00aaad227a ARM: EXYNOS4: Rename sclk_cam clocks for FIMC driver
The sclk_cam clocks are now controlled by the top level FIMC media
device driver bound to "s5p-fimc-md" platform device.
Rename sclk_cam clocks so they accessible by the corresponding
driver.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-09-27 07:00:59 +09:00
Sylwester Nawrocki
83427c23a4 ARM: S5PV210: Rename sclk_cam clocks for FIMC media driver
The sclk_cam clocks are now controlled by the top level FIMC media
device driver bound to "s5p-fimc-md" platform device.
Rename sclk_cam clocks so they accessible by the corresponding
driver.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-09-27 07:00:53 +09:00
Linus Torvalds
231e58e7d9 Merge branch 'kvm-updates/3.1' of git://github.com/avikivity/kvm
* 'kvm-updates/3.1' of git://github.com/avikivity/kvm:
  KVM: x86 emulator: fix Src2CL decode
  KVM: MMU: fix incorrect return of spte
2011-09-26 13:33:44 -07:00
Linus Torvalds
a2b49102da Merge branch 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm
* 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm:
  ARM: 7099/1: futex: preserve oldval in SMP __futex_atomic_op
  ARM: dma-mapping: free allocated page if unable to map
  ARM: fix vmlinux.lds.S discarding sections
  ARM: nommu: fix warning with checksyscalls.sh
  ARM: 7091/1: errata: D-cache line maintenance operation by MVA may not succeed
2011-09-26 13:26:30 -07:00
Carsten Otte
05873df981 [S390] gmap: always up mmap_sem properly
If gmap_unmap_segment figures that the segment was not mapped in the
first place, it need to up mmap_sem on exit.

Cc: <stable@kernel.org>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-09-26 16:40:50 +02:00
Martin Schwidefsky
f9783ec862 [S390] Do not clobber personality flags on exec
Analog to git commit 59e4c3a2fe
do not clear the additional personality flags on exec. We
need to inherit the personality bits in PER_MASK across exec.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-09-26 16:40:50 +02:00
Will Deacon
df77abcafc ARM: 7099/1: futex: preserve oldval in SMP __futex_atomic_op
The SMP implementation of __futex_atomic_op clobbers oldval with the
status flag from the exclusive store. This causes it to always read as
zero when performing the FUTEX_OP_CMP_* operation.

This patch updates the ARM __futex_atomic_op implementations to take a
tmp argument, allowing us to store the strex status flag without
overwriting the register containing oldval.

Cc: stable@kernel.org
Reported-by: Minho Ban <mhban@samsung.com>
Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-09-26 12:36:47 +01:00
Russell King
d8e89b47e0 ARM: dma-mapping: free allocated page if unable to map
If the attempt to map a page for DMA fails (eg, because we're out of
mapping space) then we must not hold on to the page we allocated for
DMA - doing so will result in a memory leak.

Cc: <stable@kernel.org>
Reported-by: Bryan Phillippe <bp@darkforest.org>
Tested-by: Bryan Phillippe <bp@darkforest.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-09-26 09:36:50 +01:00
Marek Szyprowski
b76f7cdca5 ARM: S5P: fix incorrect loop iterator usage on gpio-interrupt
Loop iterator value after terminating list_for_each_entry()
is not NULL. This patch fixes incorrect iterator usage in
GPIO interrupt code for SAMSUNG S5P platforms.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-09-26 13:17:41 +09:00
Heiko Stuebner
4344646ff1 ARM: S3C2443: Fix bit-reset in setrate of clk_armdiv
The changed statement should set the old armdiv bits to 0
and not everything else, before setting the new value.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-09-26 10:30:29 +09:00
Avi Kivity
9be3be1f15 KVM: x86 emulator: fix Src2CL decode
Src2CL decode (used for double width shifts) erronously decodes only bit 3
of %rcx, instead of bits 7:0.

Fix by decoding %cl in its entirety.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-09-25 19:14:58 +03:00
Zhao Jin
41bc3186b3 KVM: MMU: fix incorrect return of spte
__update_clear_spte_slow should return original spte while the
current code returns low half of original spte combined with high
half of new spte.

Signed-off-by: Zhao Jin <cronozhj@gmail.com>
Reviewed-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-09-25 19:13:25 +03:00
David Daney
2f19d080fb MIPS: Octeon: Enable C0_UserLocal probing.
Octeon2 processor cores have a UserLocal register.  Remove the hard
coded negative probe and allow the standard probing to detect this
feature.

Signed-off-by: David Daney <david.daney@cavium.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2578/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-09-24 01:44:41 +02:00
Linus Torvalds
fae3f6f2ee Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] kvm: extension capability for new address space layout
  [S390] kvm: fix address mode switching
2011-09-22 09:32:21 -07:00
David S. Miller
11032c17bd sparc: Make '-p' boot option meaningful again.
If "-p" is given on the command line, clear the CON_BOOT
flag for the initial early boot PROM console.

This is necessary to try and see crash messages that occur
between the registry of the VT console and the probing of
the first framebuffer or serial console.  During this time
no console messages are emitted because the VT console
registry (even if no backend is registered to it) removes
the early console if CON_BOOT is set.

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-09-21 12:48:06 -07:00
David Daney
0f4ccbc835 MIPS: No branches in delay slots for huge pages in handle_tlbl
For the case PM_DEFAULT_MASK == 0, we were placing a branch in the
delay slot of another branch.  This leads to undefined behavior.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2775/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-09-21 17:54:07 +02:00
David Daney
d968275921 MIPS: Don't clobber CP0_STATUS value for CONFIG_MIPS_MT_SMTC
Reported-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: David Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/2753/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-09-21 17:54:02 +02:00
David Daney
465aaed003 MIPS: Octeon: Select CONFIG_HOLES_IN_ZONE
Current Octeon systems do in fact have holes in their memory zones.
We need to select HOLES_IN_ZONE.  If we do not, some memory
configurations will result in crashes at boot time like this:

.
.
.
CPU 6 Unable to handle kernel paging request at virtual address 0000000000700000, epc == ffffffff8118fe00, ra == ffffffff8118fe9c
Oops[#1]:
Cpu 6
.
.
.
        ...
Call Trace:
[<ffffffff8118fe00>] setup_per_zone_wmarks+0x1b0/0x338
[<ffffffff815cd738>] init_per_zone_wmark_min+0x64/0xd0
[<ffffffff81100438>] do_one_initcall+0x38/0x160
.
.
.

Reported-by: Jason Kwon <jason.kwon@ericsson.com>
Signed-off-by: David Daney <david.daney@cavium.com>
To: linux-mips@linux-mips.org
Cc: Jason Kwon <jason.kwon@ericsson.com>
Patchwork: https://patchwork.linux-mips.org/patch/2724/
Tested-by: Guenter Roeck<guenter.roeck@ericsson.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-09-21 17:53:56 +02:00
Rafael J. Wysocki
bd7100099a MIPS: PM: Use struct syscore_ops instead of sysdevs for PM (v2)
Convert some MIPS architecture's code to using struct syscore_ops
objects for power management instead of sysdev classes and sysdevs.

This simplifies the code and reduces the kernel's memory footprint.
It also is necessary for removing sysdevs from the kernel entirely in
the future.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-and-tested-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-kernel@vger.kernel.org
Cc: "Rafael J.  Wysocki" <rjw@sisk.pl>
Patchwork: http://patchwork.linux-mips.org/patch/2431/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-09-21 17:53:51 +02:00
Yong Zhang
1eec6cd08b MIPS: Compat: Use 32-bit wrapper for compat_sys_futex.
We can't trust userspace to pass signed-extend arguments.  Not correctly
sign-extended arguments to futex-wait result in architecturally undefined
operation of 32-bit arithmetic instructions.

For example, if 'val' is too big and bit-31 is 1, the caller may enter
endless loop at:

futex_wait_setup()
{
	...

	if (uval != val) {
		queue_unlock(q, *hb);
		ret = -EWOULDBLOCK;

	...
}

Signed-off-by: Yong Zhang <yong.zhang@windriver.com>
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/2714/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-09-21 17:53:44 +02:00