Heiko Carstens noticed that btrfs was using empty_zero_page
incorrectly. He explained:
The definition of empty_zero_page is architecture specific. It
is (currently) either a character array, an unsigned long
containing the address of the empty_zero_page, or even worse
only the address of the struct page belonging to the
empty_zero_page.
This commit changes btrfs to use a for-loop instead. On x86
the resulting .ko is smaller, and we're no longer worrying about
how each arch builds its zeros.
Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Make sure the RTT-interrupts are masked at boot by adding a new helper
function to be used at SOC-init.
This fixes hanged boot on all AT91 SOCs with an RTT, for example, if an
RTT-alarm goes off after a non-clean shutdown (e.g. when using RTC
wakeup).
The RTC and RTT-peripherals are powered by backup power (VDDBU) (on all
AT91 SOCs but RM9200) and are not reset on wake-up, user, watchdog or
software reset. This means that their interrupts may be enabled during
early boot if, for example, they where not disabled during a previous
shutdown (e.g. due to a buggy driver or a non-clean shutdown such as a
user reset). Furthermore, an RTC or RTT-alarm may also be active.
The RTC and RTT-interrupts use the shared system-interrupt line, which
is also used by the PIT, and if an interrupt occurs before a handler
(e.g. RTC-driver) has been installed this leads to the system interrupt
being disabled and prevents the system from booting.
Note that when boot hangs due to an early RTC or RTT-interrupt, the only
way to get the system to start again is to remove the backup power (e.g.
battery) or to disable the interrupt manually from the bootloader. In
particular, a user reset is not sufficient.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: stable@vger.kernel.org # 3.11.x
Make sure the RTC-interrupts are masked at boot by adding a new helper
function to be used at SOC-init.
This fixes hanged boot on all AT91 SOCs with an RTC (but RM9200), for
example, after a reset during an RTC-update or if an RTC-alarm goes off
after shutdown (e.g. when using RTC wakeup).
The RTC and RTT-peripherals are powered by backup power (VDDBU) (on all
AT91 SOCs but RM9200) and are not reset on wake-up, user, watchdog or
software reset. This means that their interrupts may be enabled during
early boot if, for example, they where not disabled during a previous
shutdown (e.g. due to a buggy driver or a non-clean shutdown such as a
user reset). Furthermore, an RTC or RTT-alarm may also be active.
The RTC and RTT-interrupts use the shared system-interrupt line, which
is also used by the PIT, and if an interrupt occurs before a handler
(e.g. RTC-driver) has been installed this leads to the system interrupt
being disabled and prevents the system from booting.
Note that when boot hangs due to an early RTC or RTT-interrupt, the only
way to get the system to start again is to remove the backup power (e.g.
battery) or to disable the interrupt manually from the bootloader. In
particular, a user reset is not sufficient.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: stable@vger.kernel.org # 3.11.x
We moved minor deallocation to drm_dev_free() in:
commit 8f6599da8e
Author: David Herrmann <dh.herrmann@gmail.com>
Date: Sun Oct 20 18:55:45 2013 +0200
drm: delay minor destruction to drm_dev_free()
However, this causes a call to drm_unplug_minor(), which should just do
nothing as drm_dev_unregister() already called this.
But a separate patch caused kdev lifetime changes:
commit 5bdebb183c
Author: Dave Airlie <airlied@redhat.com>
Date: Fri Oct 11 14:07:25 2013 +1000
drm/sysfs: sort out minor and connector device object lifetimes.
Thus making our dev_is_registered() call useles (and even segfault if it
is NULL). Replace it with a simple !kdev test and we're fine.
Reported-by: Huax Lu <huax.lu@intel.com>
Reported-by: Daniel Vetter <daniel@ffwll.ch>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=71208
Tested-by: lu hua <huax.lu@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dave Airlie <airlied@gmail.com>
The mask for CS42L52_MIC_CTL_TYPE_MASK was wrong keeping the mic config
from being set correctly.
Signed-off-by: Brian Austin <brian.austin@cirrus.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Cc: stable@vger.kernel.org
The serial driver sets up port function manually in early platform probe stage
if the ADI GPIO2 driver is used. Remove the bfin_sport_uart early platform
devices.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
- Change fdt pointer (passed from head.S) from unsigned int to void *,
which allows to kill a cast, and makes it compatible with __dtb_start.
- Use pr_info(),
- Extract common part.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux@lists.openrisc.net
Signed-off-by: Jonas Bonn <jonas@southpole.se>
Add OF document for LM90 in Documentation/devicetree/.
[JD: Add this new file to the LM90 MAINTAINERS entry.]
Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
The device lm90 can be controlled by the vcc rail.
Adding the regulator support to power on/off the vcc rail.
Enable the "vcc" regulator before accessing the device.
[JD: Rename variables to avoid confusion with registers.]
Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
TI TMP451 is mostly compatible with ADT7461, except for
local temperature low byte and max conversion rate.
Add support to the LM90 driver.
Signed-off-by: Wei Ni <wni@nvidia.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Using enums for the indexes and nrs of temp8 and temp11.
This make the code much more readable.
Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
When the temperature exceed the limit range value,
the driver can handle the interrupt.
Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Add bit defines for the status register. And add a function
lm90_is_tripped() which will read status register and return
tripped or not, then lm90_alert can call it directly, and in the
future the IRQ thread also can use it.
[JD: Adjusted to include all the new MAX6696 status flags.]
Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Bit 2 of status register 2 on MAX6696 (external diode 2 open)
sets ALERT; the bit thus has to be listed in alert_alarms.
Also display a message in the alert handler if the condition
is encountered.
Even though not all overtemperature conditions cause ALERT
to be set, we should not ignore them in the alert handler.
Display messages for all out-of-range conditions.
Reported-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: stable@vger.kernel.org
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Openrisc's private vmlinux.h duplicates a few definitions that are already
provided by asm-generic/sections.h. The former is used by setup.c only,
while the latter is already used everywhere else.
Convert setup.c to use the generic version:
- Include <asm/sections.h>,
- Remove the (slightly different) extern declarations,
- Remove the no longer needed address-of ('&') operators.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jonas Bonn <jonas@southpole.se>
Remove gpio driver for new gpio controller on BF54x and BF60x.
Build the bfin_gpio driver only when other BF5xx processors are selected.
Replace the prefix of some gpio and peripheral functions with adi.
add portmux platform data in machine portmux.h
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Steven Miao <realmz6@gmail.com>
For BF537_FAMILY, when offset != 1, the mask is 1.
Thus add proper mask for comparing pfunc with function.
Also has small refactor for better readability.
In portmux_setup(), it looks odd having "pmux &= ~(3 << 1);"
while in current code we do pmux |= (function << offset);.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
. Synthesize anon MMAP records again, fix from Don Zickus.
. Add an option in 'perf record' to force per-cpu mmaps, from Adrian Hunter.
. Limit max callchain using max_stack on DWARF unwinding too.
. Fix segfault in the UI browser caused by off by one handling END key.
. Add '--demangle'/'--no-demangle' to perf probe, so that we can overcome
current limitations in handling C++ symbols, from Azat Khuzhin .
. Tweak 'perf trace' summary output, from Pekka Enberg.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.14 (GNU/Linux)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=14Qy
-----END PGP SIGNATURE-----
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
* Synthesize anon MMAP records again, fix from Don Zickus.
* Add an option in 'perf record' to force per-cpu mmaps, from Adrian Hunter.
* Limit max callchain using max_stack on DWARF unwinding too.
* Fix segfault in the UI browser caused by off by one handling END key.
* Add '--demangle'/'--no-demangle' to perf probe, so that we can overcome
current limitations in handling C++ symbols, from Azat Khuzhin .
* Tweak 'perf trace' summary output, from Pekka Enberg.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull drm updates from Dave Airlie:
"This is a combo of -next and some -fixes that came in in the
intervening time.
Highlights:
New drivers:
ARM Armada driver for Marvell Armada 510 SOCs
Intel:
Broadwell initial support under a default off switch,
Stereo/3D HDMI mode support
Valleyview improvements
Displayport improvements
Haswell fixes
initial mipi dsi panel support
CRC support for debugging
build with CONFIG_FB=n
Radeon:
enable DPM on a number of GPUs by default
secondary GPU powerdown support
enable HDMI audio by default
Hawaii support
Nouveau:
dynamic pm code infrastructure reworked, does nothing major yet
GK208 modesetting support
MSI fixes, on by default again
PMPEG improvements
pageflipping fixes
GMA500:
minnowboard SDVO support
VMware:
misc fixes
MSM:
prime, plane and rendernodes support
Tegra:
rearchitected to put the drm driver into the drm subsystem.
HDMI and gr2d support for tegra 114 SoC
QXL:
oops fix, and multi-head fixes
DRM core:
sysfs lifetime fixes
client capability ioctl
further cleanups to device midlayer
more vblank timestamp fixes"
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (789 commits)
drm/nouveau: do not map evicted vram buffers in nouveau_bo_vma_add
drm/nvc0-/gr: shift wrapping bug in nvc0_grctx_generate_r406800
drm/nouveau/pwr: fix missing mutex unlock in a failure path
drm/nv40/therm: fix slowing down fan when pstate undefined
drm/nv11-: synchronise flips to vblank, unless async flip requested
drm/nvc0-: remove nasty fifo swmthd hack for flip completion method
drm/nv10-: we no longer need to create nvsw object on user channels
drm/nouveau: always queue flips relative to kernel channel activity
drm/nouveau: there is no need to reserve/fence the new fb when flipping
drm/nouveau: when bailing out of a pushbuf ioctl, do not remove previous fence
drm/nouveau: allow nouveau_fence_ref() to be a noop
drm/nvc8/mc: msi rearm is via the nvc0 method
drm/ttm: Fix vma page_prot bit manipulation
drm/vmwgfx: Fix a couple of compile / sparse warnings and errors
drm/vmwgfx: Resource evict fixes
drm/edid: compare actual vrefresh for all modes for quirks
drm: shmob_drm: Convert to clk_prepare/unprepare
drm/nouveau: fix 32-bit build
drm/i915/opregion: fix build error on CONFIG_ACPI=n
Revert "drm/radeon/audio: don't set speaker allocation on DCE4+"
...
Pull IDE updates from David Miller:
"Just some minor cleanups and simplifications"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide:
ide: pmac: remove unnecessary pci_set_drvdata()
ide: cs5536: use module_pci_driver()
ide: pmac: Remove casting the return value which is a void pointer
Pull sparc update from David Miller:
1) Implement support for up to 47-bit physical addresses on sparc64.
2) Support HAVE_CONTEXT_TRACKING on sparc64, from Kirill Tkhai.
3) Fix Simba bridge window calculations, from Kjetil Oftedal.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next:
sparc64: Implement HAVE_CONTEXT_TRACKING
sparc64: Add self-IPI support for smp_send_reschedule()
sparc: PCI: Fix incorrect address calculation of PCI Bridge windows on Simba-bridges
sparc64: Encode huge PMDs using PTE encoding.
sparc64: Move to 64-bit PGDs and PMDs.
sparc64: Move from 4MB to 8MB huge pages.
sparc64: Make PAGE_OFFSET variable.
sparc64: Fix inconsistent max-physical-address defines.
sparc64: Document the shift counts used to validate linear kernel addresses.
sparc64: Define PAGE_OFFSET in terms of physical address bits.
sparc64: Use PAGE_OFFSET instead of a magic constant.
sparc64: Clean up 64-bit mmap exclusion defines.
This time the updates contain:
* Tracepoints for certain IOMMU-API functions to make
their use easier to debug
* A tracepoint for IOMMU page faults to make it easier
to get them in user space
* Updates and fixes for the new ARM SMMU driver after
the first hardware showed up
* Various other fixes and cleanups in other IOMMU drivers
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=IWTK
-----END PGP SIGNATURE-----
Merge tag 'iommu-updates-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU updates from Joerg Roedel:
"This time the updates contain:
- Tracepoints for certain IOMMU-API functions to make their use
easier to debug
- A tracepoint for IOMMU page faults to make it easier to get them in
user space
- Updates and fixes for the new ARM SMMU driver after the first
hardware showed up
- Various other fixes and cleanups in other IOMMU drivers"
* tag 'iommu-updates-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (26 commits)
iommu/shmobile: Enable the driver on all ARM platforms
iommu/tegra-smmu: Staticize tegra_smmu_pm_ops
iommu/tegra-gart: Staticize tegra_gart_pm_ops
iommu/vt-d: Use list_for_each_entry_safe() for dmar_domain->devices traversal
iommu/vt-d: Use for_each_drhd_unit() instead of list_for_each_entry()
iommu/vt-d: Fixed interaction of VFIO_IOMMU_MAP_DMA with IOMMU address limits
iommu/arm-smmu: Clear global and context bank fault status registers
iommu/arm-smmu: Print context fault information
iommu/arm-smmu: Check for num_context_irqs > 0 to avoid divide by zero exception
iommu/arm-smmu: Refine check for proper size of mapped region
iommu/arm-smmu: Switch to subsys_initcall for driver registration
iommu/arm-smmu: use relaxed accessors where possible
iommu/arm-smmu: replace devm_request_and_ioremap by devm_ioremap_resource
iommu: Remove stack trace from broken irq remapping warning
iommu: Change iommu driver to call io_page_fault trace event
iommu: Add iommu_error class event to iommu trace
iommu/tegra: gart: cleanup devm_* functions usage
iommu/tegra: Print phys_addr_t using %pa
iommu: No need to pass '0x' when '%pa' is used
iommu: Change iommu driver to call unmap trace event
...
side: the HV and emulation flavors can now coexist in a single kernel
is probably the most interesting change from a user point of view.
On the x86 side there are nested virtualization improvements and a
few bugfixes. ARM got transparent huge page support, improved
overcommit, and support for big endian guests.
Finally, there is a new interface to connect KVM with VFIO. This
helps with devices that use NoSnoop PCI transactions, letting the
driver in the guest execute WBINVD instructions. This includes
some nVidia cards on Windows, that fail to start without these
patches and the corresponding userspace changes.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)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=rWNf
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM changes from Paolo Bonzini:
"Here are the 3.13 KVM changes. There was a lot of work on the PPC
side: the HV and emulation flavors can now coexist in a single kernel
is probably the most interesting change from a user point of view.
On the x86 side there are nested virtualization improvements and a few
bugfixes.
ARM got transparent huge page support, improved overcommit, and
support for big endian guests.
Finally, there is a new interface to connect KVM with VFIO. This
helps with devices that use NoSnoop PCI transactions, letting the
driver in the guest execute WBINVD instructions. This includes some
nVidia cards on Windows, that fail to start without these patches and
the corresponding userspace changes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (146 commits)
kvm, vmx: Fix lazy FPU on nested guest
arm/arm64: KVM: PSCI: propagate caller endianness to the incoming vcpu
arm/arm64: KVM: MMIO support for BE guest
kvm, cpuid: Fix sparse warning
kvm: Delete prototype for non-existent function kvm_check_iopl
kvm: Delete prototype for non-existent function complete_pio
hung_task: add method to reset detector
pvclock: detect watchdog reset at pvclock read
kvm: optimize out smp_mb after srcu_read_unlock
srcu: API for barrier after srcu read unlock
KVM: remove vm mmap method
KVM: IOMMU: hva align mapping page size
KVM: x86: trace cpuid emulation when called from emulator
KVM: emulator: cleanup decode_register_operand() a bit
KVM: emulator: check rex prefix inside decode_register()
KVM: x86: fix emulation of "movzbl %bpl, %eax"
kvm_host: typo fix
KVM: x86: emulate SAHF instruction
MAINTAINERS: add tree for kvm.git
Documentation/kvm: add a 00-INDEX file
...
- SWIOTLB has tracing added when doing bounce buffer.
- Xen ARM/ARM64 can use Xen-SWIOTLB. This work allows Linux to
safely program real devices for DMA operations when running as
a guest on Xen on ARM, without IOMMU support.*1
- xen_raw_printk works with PVHVM guests if needed.
Bug-fixes:
- Make memory ballooning work under HVM with large MMIO region.
- Inform hypervisor of MCFG regions found in ACPI DSDT.
- Remove deprecated IRQF_DISABLED.
- Remove deprecated __cpuinit.
[*1]:
"On arm and arm64 all Xen guests, including dom0, run with second stage
translation enabled. As a consequence when dom0 programs a device for a
DMA operation is going to use (pseudo) physical addresses instead
machine addresses. This work introduces two trees to track physical to
machine and machine to physical mappings of foreign pages. Local pages
are assumed mapped 1:1 (physical address == machine address). It
enables the SWIOTLB-Xen driver on ARM and ARM64, so that Linux can
translate physical addresses to machine addresses for dma operations
when necessary. " (Stefano).
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.15 (GNU/Linux)
iQEcBAABAgAGBQJSgS86AAoJEFjIrFwIi8fJpY4H/R2gke1A1p9UvTwbkaDhgPs/
u/mkI6aH+ktgvu5QZNprki660uydtc4Ck7y8leeLGYw+ed1Ys559SJhRc/x8jBYZ
Hh2chnplld0LAjSpdIDTTePArE1xBo4Gz+fT0zc5cVh0leJwOXn92Kx8N5AWD/T3
gwH4Ok4K1dzZBIls7imM2AM/L1xcApcx3Dl/QpNcoePQtR4yLuPWMUbb3LM8pbUY
0B6ZVN4GOhtJ84z8HRKnh4uMnBYmhmky6laTlHVa6L+j1fv7aAPCdNbePjIt/Pvj
HVYB1O/ht73yHw0zGfK6lhoGG8zlu+Q7sgiut9UsGZZfh34+BRKzNTypqJ3ezQo=
=xc43
-----END PGP SIGNATURE-----
Merge tag 'stable/for-linus-3.13-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull Xen updates from Konrad Rzeszutek Wilk:
"This has tons of fixes and two major features which are concentrated
around the Xen SWIOTLB library.
The short <blurb> is that the tracing facility (just one function) has
been added to SWIOTLB to make it easier to track I/O progress.
Additionally under Xen and ARM (32 & 64) the Xen-SWIOTLB driver
"is used to translate physical to machine and machine to physical
addresses of foreign[guest] pages for DMA operations" (Stefano) when
booting under hardware without proper IOMMU.
There are also bug-fixes, cleanups, compile warning fixes, etc.
The commit times for some of the commits is a bit fresh - that is b/c
we wanted to make sure we have the Ack's from the ARM folks - which
with the string of back-to-back conferences took a bit of time. Rest
assured - the code has been stewing in #linux-next for some time.
Features:
- SWIOTLB has tracing added when doing bounce buffer.
- Xen ARM/ARM64 can use Xen-SWIOTLB. This work allows Linux to
safely program real devices for DMA operations when running as a
guest on Xen on ARM, without IOMMU support. [*1]
- xen_raw_printk works with PVHVM guests if needed.
Bug-fixes:
- Make memory ballooning work under HVM with large MMIO region.
- Inform hypervisor of MCFG regions found in ACPI DSDT.
- Remove deprecated IRQF_DISABLED.
- Remove deprecated __cpuinit.
[*1]:
"On arm and arm64 all Xen guests, including dom0, run with second
stage translation enabled. As a consequence when dom0 programs a
device for a DMA operation is going to use (pseudo) physical
addresses instead machine addresses. This work introduces two trees
to track physical to machine and machine to physical mappings of
foreign pages. Local pages are assumed mapped 1:1 (physical address
== machine address). It enables the SWIOTLB-Xen driver on ARM and
ARM64, so that Linux can translate physical addresses to machine
addresses for dma operations when necessary. " (Stefano)"
* tag 'stable/for-linus-3.13-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (32 commits)
xen/arm: pfn_to_mfn and mfn_to_pfn return the argument if nothing is in the p2m
arm,arm64/include/asm/io.h: define struct bio_vec
swiotlb-xen: missing include dma-direction.h
pci-swiotlb-xen: call pci_request_acs only ifdef CONFIG_PCI
arm: make SWIOTLB available
xen: delete new instances of added __cpuinit
xen/balloon: Set balloon's initial state to number of existing RAM pages
xen/mcfg: Call PHYSDEVOP_pci_mmcfg_reserved for MCFG areas.
xen: remove deprecated IRQF_DISABLED
x86/xen: remove deprecated IRQF_DISABLED
swiotlb-xen: fix error code returned by xen_swiotlb_map_sg_attrs
swiotlb-xen: static inline xen_phys_to_bus, xen_bus_to_phys, xen_virt_to_bus and range_straddles_page_boundary
grant-table: call set_phys_to_machine after mapping grant refs
arm,arm64: do not always merge biovec if we are running on Xen
swiotlb: print a warning when the swiotlb is full
swiotlb-xen: use xen_dma_map/unmap_page, xen_dma_sync_single_for_cpu/device
xen: introduce xen_dma_map/unmap_page and xen_dma_sync_single_for_cpu/device
tracing/events: Fix swiotlb tracepoint creation
swiotlb-xen: use xen_alloc/free_coherent_pages
xen: introduce xen_alloc/free_coherent_pages
...
some robustness fixes for broken virtio devices, plus minor tweaks.
[vs last pull request: added the virtio-scsi broken vq escape patch, which
I somehow lost.]
Cheers,
Rusty.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.14 (GNU/Linux)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=vY2L
-----END PGP SIGNATURE-----
Merge tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
Pull virtio updates from Rusty Russell:
"Nothing really exciting: some groundwork for changing virtio endian,
and some robustness fixes for broken virtio devices, plus minor
tweaks"
* tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
virtio_scsi: verify if queue is broken after virtqueue_get_buf()
x86, asmlinkage, lguest: Pass in globals into assembler statement
virtio: mmio: fix signature checking for BE guests
virtio_ring: adapt to notify() returning bool
virtio_net: verify if queue is broken after virtqueue_get_buf()
virtio_console: verify if queue is broken after virtqueue_get_buf()
virtio_blk: verify if queue is broken after virtqueue_get_buf()
virtio_ring: add new function virtqueue_is_broken()
virtio_test: verify if virtqueue_kick() succeeded
virtio_net: verify if virtqueue_kick() succeeded
virtio_ring: let virtqueue_{kick()/notify()} return a bool
virtio_ring: change host notification API
virtio_config: remove virtio_config_val
virtio: use size-based config accessors.
virtio_config: introduce size-based accessors.
virtio_ring: plug kmemleak false positive.
virtio: pm: use CONFIG_PM_SLEEP instead of CONFIG_PM
- Page flipping fixes, with support for syncing them to vblank (finally...).
- Misc other general fixes
* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
drm/nouveau: do not map evicted vram buffers in nouveau_bo_vma_add
drm/nvc0-/gr: shift wrapping bug in nvc0_grctx_generate_r406800
drm/nouveau/pwr: fix missing mutex unlock in a failure path
drm/nv40/therm: fix slowing down fan when pstate undefined
drm/nv11-: synchronise flips to vblank, unless async flip requested
drm/nvc0-: remove nasty fifo swmthd hack for flip completion method
drm/nv10-: we no longer need to create nvsw object on user channels
drm/nouveau: always queue flips relative to kernel channel activity
drm/nouveau: there is no need to reserve/fence the new fb when flipping
drm/nouveau: when bailing out of a pushbuf ioctl, do not remove previous fence
drm/nouveau: allow nouveau_fence_ref() to be a noop
drm/nvc8/mc: msi rearm is via the nvc0 method
commit 7e0be9f9f7 ('video: exynos_mipi_dsim:
Use the generic PHY driver') resulted in a warning about an unused
variable:
drivers/video/exynos/exynos_mipi_dsi.c:144:26: warning: unused variable
'pdev' [-Wunused-variable]
It is indeed unused; remove it.
Signed-off-by: Olof Johansson <olof@lixom.net>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Merge patches from Andrew Morton:
- memstick fixes
- the rest of MM
- various misc bits that were awaiting merges from linux-next into
mainline: seq_file, printk, rtc, completions, w1, softirqs, llist,
kfifo, hfsplus
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (72 commits)
cmdline-parser: fix build
hfsplus: Fix undefined __divdi3 in hfsplus_init_header_node()
kfifo API type safety
kfifo: kfifo_copy_{to,from}_user: fix copied bytes calculation
sound/core/memalloc.c: use gen_pool_dma_alloc() to allocate iram buffer
llists-move-llist_reverse_order-from-raid5-to-llistc-fix
llists: move llist_reverse_order from raid5 to llist.c
kernel: fix generic_exec_single indentation
kernel-provide-a-__smp_call_function_single-stub-for-config_smp-fix
kernel: provide a __smp_call_function_single stub for !CONFIG_SMP
kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS
revert "softirq: Add support for triggering softirq work on softirqs"
drivers/w1/masters/w1-gpio.c: use dev_get_platdata()
sched: remove INIT_COMPLETION
tree-wide: use reinit_completion instead of INIT_COMPLETION
sched: replace INIT_COMPLETION with reinit_completion
drivers/rtc/rtc-hid-sensor-time.c: enable HID input processing early
drivers/rtc/rtc-hid-sensor-time.c: use dev_get_platdata()
vsprintf: ignore %n again
seq_file: remove "%n" usage from seq_file users
...
Fix following errors:
include/linux/cmdline-parser.h:17:12: error: 'BDEVNAME_SIZE' undeclared here
block/cmdline-parser.c:17:2: error: implicit declaration of function 'kzalloc'
Signed-off-by: Alexander Beregalov <alexander.beregalov@intel.com>
Cc: CaiZhiyong <caizhiyong@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
ERROR: "__divdi3" [fs/hfsplus/hfsplus.ko] undefined!
Introduced by commit 099e9245e0 ("hfsplus: implement attributes file's
header node initialization code").
i_size_read() returns loff_t, which is long long, i.e. 64-bit. node_size
is size_t, which is either 32-bit or 64-bit. Hence
"i_size_read(attr_file) / node_size" is a 64-by-32 or 64-by-64 division,
causing (some versions of) gcc to emit a call to __divdi3().
Fortunately node_size is actually 16-bit, as the sole caller of
hfsplus_init_header_node() passes a u16. Hence change its type from
size_t to u16, and use do_div() to perform a 64-by-32 division.
Not seen in m68k/allmodconfig in -next, so it really depends on the
verion of gcc.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Vyacheslav Dubeyko <slava@dubeyko.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch enhances the type safety for the kfifo API. It is now safe
to put const data into a non const FIFO and the API will now generate a
compiler warning when reading from the fifo where the destination
address is pointing to a const variable.
As a side effect the kfifo_put() does now expect the value of an element
instead a pointer to the element. This was suggested Russell King. It
make the handling of the kfifo_put easier since there is no need to
create a helper variable for getting the address of a pointer or to pass
integers of different sizes.
IMHO the API break is okay, since there are currently only six users of
kfifo_put().
The code is also cleaner by kicking out the "if (0)" expressions.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
'copied' and 'len' are in bytes, while 'ret' is in elements, so we need to
multiply 'ret' with the size of one element to get the correct result.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Stefani Seibold <stefani@seibold.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
