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* 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen: off by one errors in multicalls.c
xen: use the trigger info we already have to choose the irq handler
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf: Fix comments in include/linux/perf_event.h
perf: Comment /proc/sys/kernel/perf_event_paranoid to be part of user ABI
perf python: Fix argument name list of read_on_cpu()
perf evlist: Don't die if sample_{id_all|type} is invalid
perf python: Use exception to propagate errors
perf evlist: Remove dependency on debug routines
perf, cgroups: Fix up for new API
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6:
[media] soc_camera: preserve const attribute
[media] uvc_entity: initialize return value
[media] media: Fix media device minor registration
[media] Make nchg variable signed because the code compares this variable against negative values
[media] omap3isp: fix compiler warning
[media] v4l: Fix media_entity_to_video_device macro argument name
[media] ivtv: Internally separate encoder & decoder standard setting
[media] ivtvfb: Add sanity check to ivtvfb_pan_display()
[media] ivtvfb: use display information in info not in var for panning
[media] ivtv: Make two ivtv_msleep_timeout calls uninterruptable
[media] anysee: return EOPNOTSUPP for unsupported I2C messages
[media] gspca - ov519: Set the default frame rate to 15 fps
[media] gspca - stv06xx: Set a lower default value of gain for hdcs sensors
[media] gspca: Remove coarse_expo_autogain.h
[media] gspca - ov519: Change the ovfx2 bulk transfer size
[media] gspca - ov519: Fix a regression for ovfx2 webcams
* 'drm-radeon-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm/radeon/kms: disable hdmi audio by default
drm/radeon/kms: fix for radeon on systems >4GB without hardware iommu
drm/radeon/kms: set family for use in parser.
The flush_to_ldisc() work entry has special logic to notice when it has
seen the original tail of the data queue, and it avoids continuing the
flush if it sees that _original_ tail rather than the current tail.
This logic can trigger in case somebody is constantly adding new data to
the tty while the flushing is active - and the intent is to avoid
excessive CPU usage while flushing the tty, especially as we used to do
this from a softirq context which made it non-preemptible.
However, since we no longer re-arm the work-queue from within itself
(because that causes other trouble: see commit a5660b41af "tty: fix
endless work loop when the buffer fills up"), this just leads to
possible hung tty's (most easily seen in SMP and with a test-program
that floods a pty with data - nobody seems to have reported this for any
real-life situation yet).
And since the workqueue isn't done from timers and softirq's any more,
it's doubtful whether the CPU useage issue is really relevant any more.
So just remove the logic entirely, and see if anybody ever notices.
Alternatively, we might want to re-introduce the "re-arm the work" for
just this case, but then we'd have to re-introduce the delayed work
model or some explicit timer, which really doesn't seem worth it for
this.
Reported-and-tested-by: Guillaume Chazarain <guichaz@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
On my x86_64 system with >4GB of ram and swiotlb instead of
a hardware iommu (because I have a VIA chipset), the call
to pci_set_dma_mask (see below) with 40bits returns an error.
But it seems that the radeon driver is designed to have
need_dma32 = true exactly if pci_set_dma_mask is called
with 32 bits and false if it is called with 40 bits.
I have read somewhere that the default are 32 bits. So if the
call fails I suppose that need_dma32 should be set to true.
And indeed the patch fixes the problem I have had before
and which I had described here:
http://choon.net/forum/read.php?21,106131,115940
Acked-by: Alex Deucher <alexdeucher@gmail.com>
cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Wierdly the kms parser never initialised the family, it wasn't really used
much, but the fmt checker patch started using it and it fell over.
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86/amd-iommu: Fix boot crash with hidden PCI devices
x86/amd-iommu: Use only per-device dma_ops
x86/amd-iommu: Fix 3 possible endless loops
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm/nv40: fall back to paged dma object for the moment
drm/nouveau: fix leak of gart mm node
drm/nouveau: fix vram page mapping when crossing page table boundaries
drm/nv17-nv40: Fix modesetting failure when pitch == 4096px (fdo bug 35901).
drm/nouveau: don't create accel engine objects when noaccel=1
drm/nvc0: recognise 0xdX chipsets as NV_C0
drm/i915: Add a no lvds quirk for the Asus EeeBox PC EB1007
drm/i915: Share the common force-audio property between connectors
drm/i915: Remove unused enum "chip_family"
drm/915: fix relaxed tiling on gen2: tile height
drm/i915/crt: Explicitly return false if connected to a digital monitor
drm/i915: Replace ironlake_compute_wm0 with g4x_compute_wm0
drm/i915: Only print out the actual number of fences for i915_error_state
drm/i915: s/addr & ~PAGE_MASK/offset_in_page(addr)/
drm: i915: correct return status in intel_hdmi_mode_valid()
drm/i915: fix regression after clock gating init split
drm/i915: fix if statement in ivybridge irq handler
* 'drm-radeon-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm/radeon/kms/atom: fix PHY init
drm/radeon/kms: add missing Evergreen texture formats to the CS parser
drm/radeon/kms: viewport height has to be even
drm/radeon/kms: remove duplicate reg from r600 safe regs
drm/radeon/kms: add support for Llano Fusion APUs
drm/radeon/kms: add llano pci ids
drm/radeon/kms: fill in asic struct for llano
drm/radeon/kms: add family ids for llano APUs
drm/radeon: fix oops in ttm reserve when pageflipping (v2)
drm/radeon/kms: clean up the radeon kms Kconfig
drm/radeon/kms: fix thermal sensor reading on juniper
drm/radeon/kms: add missing case for cayman thermal sensor
drm/radeon/kms: add blit support for cayman (v2)
drm/radeon/kms/blit: workaround some hw issues on evergreen+
* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
timers: Consider slack value in mod_timer()
clockevents: Handle empty cpumask gracefully
* 'kvm-updates/3.0' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: Initialize kvm before registering the mmu notifier
KVM: x86: use proper port value when checking io instruction permission
KVM: add missing void __user * cast to access_ok() call
We had to say goodbye when David passed away recently. David had a
huge impact on our community, both personally in the lives of the
people he worked with, and technically in the design and maintenance
of several subsystems. He is greatly missed.
He also leaves behind a number of much loved subsystems now orphaned.
This patch updates the MAINTAINERS file for the areas that David was
responsible for and adds an entry for him to the CREDITS file.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Harry Wei <harryxiyou@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
_sdata needs to be declared in the linker script now as of commit
a2d063ac21 ("extable, core_kernel_data(): Make sure all archs define
_sdata")
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
die_if_no_fixup() shouldn't use get_user() as it doesn't call set_fs() to
indicate that it wants to probe a kernel address. Instead it should use
probe_kernel_read().
This fixes the problem of gdb seeing SIGILL rather than SIGTRAP when hitting
the KGDB special breakpoint upon SysRq+g being seen. The problem was that
die_if_no_fixup() was failing to read the opcode of the instruction that caused
the exception, and thus not fixing up the exception.
This caused gdb to get a S04 response to the $? request in its remote protocol
rather than S05 - which would then cause it to continue with $C04 rather than
$c in an attempt to pass the signal onto the inferior process. The kernel,
however, does not support $Cnn, and so objects by returning an E22 response,
indicating an error. gdb does not expect this and prints:
warning: Remote failure reply: E22
and then returns to the gdb command prompt unable to continue.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
One of the kernel debugger cacheflush variants escaped proper testing. Two of
the labels are wrong, being derived from the code that was copied to construct
the variant.
The first label results in the following assembler message:
AS arch/mn10300/mm/cache-dbg-flush-by-reg.o
arch/mn10300/mm/cache-dbg-flush-by-reg.S: Assembler messages:
arch/mn10300/mm/cache-dbg-flush-by-reg.S:123: Error: symbol `debugger_local_cache_flushinv_no_dcache' is already defined
And the second label results in the following linker message:
arch/mn10300/mm/built-in.o:(.text+0x1d39): undefined reference to `mn10300_local_icache_inv_range_reg_end'
arch/mn10300/mm/built-in.o:(.text+0x1d39): relocation truncated to fit: R_MN10300_PCREL16 against undefined symbol `mn10300_local_icache_inv_range_reg_end'
To test this file the following configuration pieces must be set:
CONFIG_AM34=y
CONFIG_MN10300_CACHE_WBACK=y
CONFIG_MN10300_DEBUGGER_CACHE_FLUSH_BY_REG=y
CONFIG_MN10300_CACHE_MANAGE_BY_REG=y
CONFIG_AM34_HAS_CACHE_SNOOP=n
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (21 commits)
ARM: OMAP4: MMC: increase delay for pbias
arm: omap2plus: move NAND_BLOCK_SIZE out of boards
omap4: hwmod: Enable the keypad
omap3: Free Beagle rev gpios when they are read, so others can read them later
arm: omap3: beagle: Ensure msecure is mux'd to be able to set the RTC
omap: rx51: Don't power up speaker amplifier at bootup
omap: rx51: Set regulator V28_A always on
ARM: OMAP4: MMC: no regulator off during probe for eMMC
arm: omap2plus: fix ads7846 pendown gpio request
ARM: OMAP2: Add missing iounmap in omap4430_phy_init
ARM: omap4: Pass core and wakeup mux tables to omap4_mux_init
ARM: omap2+: mux: Allow board mux settings to be NULL
OMAP4: fix return value of omap4_l3_init
OMAP: iovmm: fix SW flags passed by user
arch/arm/mach-omap1/dma.c: Invert calls to platform_device_put and platform_device_del
OMAP2+: mux: fix compilation warnings
OMAP: SRAM: Fix warning: format '%08lx' expects type 'long unsigned int'
arm: omap3: cm-t3517: fix section mismatch warning
OMAP2+: Fix 9 section mismatch(es) warnings from mach-omap2/built-in.o
ARM: OMAP2: Add missing include of linux/gpio.h
...
* 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
vfs: make unlink() and rmdir() return ENOENT in preference to EROFS
lmLogOpen() broken failure exit
usb: remove bad dput after dentry_unhash
more conservative S_NOSEC handling
The Samsung GPIO drivers are always built-in when the relevant
platform is selected. Change the Kconfig symbol to def_bool y
dependant on the platform.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
The S3C_GPIO_PULL_UP macro value incorrectly maps to a reserved setting of GPIO
pull up/down registers on Exynos4 platform. Fix this incorrect mapping by adding
wrappers to the s3c_gpio_setpull_updown and s3c_gpio_getpull_updown functions.
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
If user space attempts to remove a non-existent file or directory, and
the file system is mounted read-only, return ENOENT instead of EROFS.
Either error code is arguably valid/correct, but ENOENT is a more
specific error message.
Reported-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Callers of lmLogOpen() expect it to return -E... on failure exits, which
is what it returns, except for the case of blkdev_get_by_dev() failure.
It that case lmLogOpen() return the error with the wrong sign...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Sergey reported a CONFIG_PROVE_RCU warning in push_rt_task where
set_task_cpu() was called with both relevant rq->locks held, which
should be sufficient for running tasks since holding its rq->lock
will serialize against sched_move_task().
Update the comments and fix the task_group() lockdep test.
Reported-and-tested-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1307115427.2353.3456.camel@twins
Signed-off-by: Ingo Molnar <mingo@elte.hu>
The main lock_is_held() user is lockdep_assert_held(), avoid false
assertions in lockdep_off() sections by unconditionally reporting the
lock is taken.
[ the reason this is important is a lockdep_assert_held() in ttwu()
which triggers a warning under lockdep_off() as in printk() which
can trigger another wakeup and lock up due to spinlock
recursion, as reported and heroically debugged by Arne Jansen ]
Reported-and-tested-by: Arne Jansen <lists@die-jansens.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: <stable@kernel.org>
Link: http://lkml.kernel.org/r/1307398759.2497.966.camel@laptop
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Some PCIe cards ship with a PCI-PCIe bridge which is not
visible as a PCI device in Linux. But the device-id of the
bridge is present in the IOMMU tables which causes a boot
crash in the IOMMU driver.
This patch fixes by removing these cards from the IOMMU
handling. This is a pure -stable fix, a real fix to handle
this situation appriatly will follow for the next merge
window.
Cc: stable@kernel.org # > 2.6.32
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next:
drm/nv40: fall back to paged dma object for the moment
drm/nouveau: fix leak of gart mm node
drm/nouveau: fix vram page mapping when crossing page table boundaries
drm/nv17-nv40: Fix modesetting failure when pitch == 4096px (fdo bug 35901).
drm/nouveau: don't create accel engine objects when noaccel=1
drm/nvc0: recognise 0xdX chipsets as NV_C0
* 'keithp/drm-intel-fixes' of /ssd/git/drm-next:
drm/i915: Add a no lvds quirk for the Asus EeeBox PC EB1007
drm/i915: Share the common force-audio property between connectors
drm/i915: Remove unused enum "chip_family"
drm/915: fix relaxed tiling on gen2: tile height
drm/i915/crt: Explicitly return false if connected to a digital monitor
drm/i915: Replace ironlake_compute_wm0 with g4x_compute_wm0
drm/i915: Only print out the actual number of fences for i915_error_state
drm/i915: s/addr & ~PAGE_MASK/offset_in_page(addr)/
drm: i915: correct return status in intel_hdmi_mode_valid()
drm/i915: fix regression after clock gating init split
drm/i915: fix if statement in ivybridge irq handler
PCI(E)GART isn't quite stable it seems, fall back to old method until I get
the time to sort it out properly.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Should hopefully get modesetting at least from this, it appears these are
GF119 chipsets. Accel will come eventually, once I order a board.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
_set_gpio_triggering uses read-modify-write on bank registers,
lock bank->lock around all calls to it to prevent register
corruption if two cpus access gpios in the same bank at the
same time.
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Setting the IRQWAKEN bit was overwriting previous IRQWAKEN bits,
causing only the last bit set to take effect, resulting in lost
wakeups when the GPIO controller is in idle.
Replace direct writes to IRQWAKEN with MOD_REG_BIT calls to
perform a read-modify-write on the register.
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
WARNING: arch/arm/plat-omap/built-in.o(.devinit.text+0x46c): Section mismatch in reference from the function omap_gpio_probe() to the function .init.text:omap_gpio_chip_init()
The function __devinit omap_gpio_probe() references
a function __init omap_gpio_chip_init().
If omap_gpio_chip_init is only used by omap_gpio_probe then
annotate omap_gpio_chip_init with a matching annotation.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Unfortunatly there are systems where the AMD IOMMU does not
cover all devices. This breaks with the current driver as it
initializes the global dma_ops variable. This patch limits
the AMD IOMMU to the devices listed in the IVRS table fixing
DMA for devices not covered by the IOMMU.
Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
The driver contains several loops counting on an u16 value
where the exit-condition is checked against variables that
can have values up to 0xffff. In this case the loops will
never exit. This patch fixed 3 such loops.
Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
KVM is not available for 31 bit but the KVM defines cause warnings:
arch/s390/include/asm/pgtable.h: In function 'ptep_test_and_clear_user_dirty':
arch/s390/include/asm/pgtable.h:817: warning: integer constant is too large for 'unsigned long' type
arch/s390/include/asm/pgtable.h:818: warning: integer constant is too large for 'unsigned long' type
arch/s390/include/asm/pgtable.h: In function 'ptep_test_and_clear_user_young':
arch/s390/include/asm/pgtable.h:837: warning: integer constant is too large for 'unsigned long' type
arch/s390/include/asm/pgtable.h:838: warning: integer constant is too large for 'unsigned long' type
Add 31 bit versions of the KVM defines to remove the warnings.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Replace the s390 specific rcu page-table freeing code with the
generic variant. This requires to duplicate the definition for the
struct mmu_table_batch as s390 does not use the generic tlb flush
code.
While we are at it remove the restriction that page table fragments
can not be reused after a single fragment has been freed with rcu
and split out allocation and freeing of page tables with pgstes.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The qdio SBAL entry flag is made-up of four different values that are
independent of one another. Some of the bits are reserved by the
hardware and should not be changed by qdio. Currently all four values
are overwritten since the SBAL entry flag is defined as an u32.
Split the SBAL entry flag into four u8's as defined by the hardware
and don't touch the reserved bits.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
