13 Jan, 2010
1 commit
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Someone isn't reading their build output: Move the definition
out of the exported header.Signed-off-by: Alan Cox
Cc: linux-kernel@vger.kernelorg
Signed-off-by: Ingo Molnar
07 Jan, 2010
1 commit
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With the recent irq migration fixes (post 2.6.32), Gary Hade has noticed
"No IRQ handler for vector" messages during the 2.6.33-rc1 kernel boot on IBM
AMD platforms and root caused the issue to this commit:> commit 23359a88e7eca3c4f402562b102f23014db3c2aa
> Author: Suresh Siddha
> Date: Mon Oct 26 14:24:33 2009 -0800
>
> x86: Remove move_cleanup_count from irq_cfgAs part of this patch, we have removed the move_cleanup_count check
in smp_irq_move_cleanup_interrupt(). With this change, we can run into a
situation where an irq cleanup interrupt on a cpu can cleanup the vector
mappings associated with multiple irqs, of which one of the irq's migration
might be still in progress. As such when that irq hits the old cpu, we get
the "No IRQ handler" messages.Fix this by checking for the irq_cfg's move_in_progress and if the move
is still in progress delay the vector cleanup to another irq cleanup
interrupt request (which will happen when the irq starts arriving at the
new cpu destination).Reported-and-tested-by: Gary Hade
Signed-off-by: Suresh Siddha
LKML-Reference:
Cc: Eric W. Biederman
Signed-off-by: H. Peter Anvin
06 Jan, 2010
1 commit
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Callers of copy_from_user() expect it to return the number of bytes
it could not copy. In no case it is supposed to return -EFAULT.In case of a detected buffer overflow just return the requested
length. In addition one could think of a memset that would clear
the size of the target object.[ hpa: code is not in .32 so not needed for -stable ]
Signed-off-by: Heiko Carstens
Acked-by: Arjan van de Ven
LKML-Reference:
Signed-off-by: H. Peter Anvin
05 Jan, 2010
3 commits
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This reverts commit ae1b22f6e46c03cede7cea234d0bf2253b4261cf.
As Linus said in 982d007a6ee: "There was something really messy about
cmpxchg8b and clone CPU's, so if you enable it on other CPUs later, do it
carefully."This breaks lguest for those configs, but we can fix that by emulating
if we have to.Fixes: http://bugzilla.kernel.org/show_bug.cgi?id=14884
Signed-off-by: Rusty Russell
LKML-Reference:
Cc: stable@kernel.org
Signed-off-by: H. Peter Anvin -
It is above 0x100 (PCI-Express extended register space), so if mmconf
is not enable, we can't access it.[ hpa: changed the bound from 0x200 to 0x120, which is the tight
bound. ]Reported-by: Jens Axboe
Signed-off-by: Yinghai Lu
LKML-Reference:
Signed-off-by: H. Peter Anvin -
fix for error that is introduced by
| x86: Use find_e820() instead of hard coded trampoline addressit should end with PAGE_SIZE + PAGE_SIZE
Signed-off-by: Yinghai Lu
LKML-Reference:
Signed-off-by: H. Peter Anvin
31 Dec, 2009
1 commit
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Stephen Rothwell reported the following build warning:
lib/dma-debug.c: In function 'dma_debug_device_change':
lib/dma-debug.c:680: warning: 'return' with no value, in function returning non-voidIntroduced by commit f797d9881b62c2ddb1d2e7bd80d87141949c84aa
("dma-debug: Do not add notifier when dma debugging is disabled").Return 0 [notify-done] when disabled. (this is standard bus notifier behavior.)
Signed-off-by: Shaun Ruffell
Signed-off-by: Joerg Roedel
Cc: Linus Torvalds
Cc:
LKML-Reference:
Signed-off-by: Ingo Molnar
30 Dec, 2009
1 commit
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with CONFIG_GART_IOMMU enabled drivers/char/agp/amd64-agp.c has:
#ifndef CONFIG_GART_IOMMU
module_init(agp_amd64_init);
module_exit(agp_amd64_cleanup);
#endifagp_amd64_init() was called via gart_iommu_init with
CONFIG_GART_IOMMU=y agp_amd64_init() was called via module_init
with CONFIG_GART_IOMMU=nThe commit 75f1cdf1dda92cae037ec848ae63690d91913eac changes the
x86 dma initialization routine: gart_iommu_init() is called only
when GART IOMMU is detected. So when GART IOMMU isn't detected,
agp_amd64_init isn't called.Marin Mitov reported this issue:
http://marc.info/?l=linux-kernel&m=126192729110083&w=2
With this patch, agp_amd64_init() is always called via
module_init (the above ifndef is removed). If agp_amd64_init()
is called via gart_iommu_init() earlier, agp_amd64_init()
finishes without doing anything (when it is called via
module_init).Reported-by: Marin Mitov
Tested-by: Marin Mitov
Signed-off-by: FUJITA Tomonori
Cc: davej@redhat.com
LKML-Reference:
Signed-off-by: Ingo Molnar
29 Dec, 2009
1 commit
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The wrong address was being used to write the SCIR led regs on
remote hubs. Also, there was an inconsistency between how BIOS
and the kernel indexed these regs. Standardize on using the
lower 6 bits of the APIC ID as the index.This patch fixes the problem of writing to an errant address to
a cpu # >= 64.Signed-off-by: Mike Travis
Reviewed-by: Jack Steiner
Cc: Robin Holt
Cc: Linus Torvalds
Cc: stable@kernel.org
LKML-Reference:
[ v2: fix a number of annoying checkpatch artifacts and whitespace noise ]
Signed-off-by: Ingo Molnar
28 Dec, 2009
3 commits
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As suggested by Vegard Nossum, use KERN_WARNING for error
reporting to make sure kmemcheck reports end up in syslog.Suggested-by: Vegard Nossum
Signed-off-by: Pekka Enberg
Cc: Andrew Morton
LKML-Reference:
Signed-off-by: Ingo Molnar -
Andrew Morton reported a strange looking kmemcheck warning:
WARNING: kmemcheck: Caught 32-bit read from uninitialized memory (ffff88004fba6c20)
0000000000000000310000000000000000000000000000002413000000c9ffff
u u u u u u u u u u u u u u u u i i i i i i i i u u u u u u u u[] kmemleak_scan+0x25a/0x540
[] kmemleak_scan_thread+0x5b/0xe0
[] kthread+0x9e/0xb0
[] kernel_thread_helper+0x4/0x10
[] 0xffffffffffffffffThe above printout is missing register dump completely. The
problem here is that the output comes from syslog which doesn't
show KERN_INFO log-level messages. We didn't see this before
because both of us were testing on 32-bit kernels which use the
_default_ log-level.Fix that up by explicitly using KERN_DEFAULT log-level for
__show_regs() printks.Signed-off-by: Pekka Enberg
Cc: Vegard Nossum
Cc: Andrew Morton
Cc: Arjan van de Ven
Cc: Linus Torvalds
LKML-Reference:
Signed-off-by: Ingo Molnar -
…/linux-2.6-iommu into x86/urgent
26 Dec, 2009
1 commit
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Recently, some distros have started shipping versions of gcc which
default to -march=i686. This breaks building kernels for pre-i686
machines, even if they have been selected in Kconfig, due to the
generation of CMOV instructions.There isn't enough benefit to try to preserve the generation of these
instructions even when selected, so simply force -march=i386 for the
decompressor when building a 32-bit kernel.Reported-and-tested-by: Chris Rankin
Signed-off-by: H. Peter Anvin
LKML-Reference:
21 Dec, 2009
3 commits
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The assumption that acpi_table_parse passes the return value
of the hanlder function to the caller proved wrong
recently. The return value of the handler function is
totally ignored. This makes the initialization code for AMD
IOMMU buggy in a way that could cause a kernel panic on
initialization. This patch fixes the issue in the AMD IOMMU
driver.Cc: stable@kernel.org
Signed-off-by: Joerg Roedel -
If CONFIG_HAVE_DMA_API_DEBUG is defined and "dma_debug=off" is
specified on the kernel command line, when you detach a driver from a
device you can cause the following NULL pointer dereference:BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [] dma_debug_device_change+0x5d/0x117The problem is that the dma_debug_device_change notifier function is
added to the bus notifier chain even though the dma_entry_hash array
was never initialized. If dma debugging is disabled, this patch both
prevents dma_debug_device_change notifiers from being added to the
chain, and additionally ensures that the dma_debug_device_change
notifier function is a no-op.Cc: stable@kernel.org
Signed-off-by: Shaun Ruffell
Signed-off-by: Joerg Roedel
19 Dec, 2009
1 commit
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Different version of objdump says its version in different way;
GNU objdump 2.16.1
or
GNU objdump version 2.19.51.0.14-1.fc11 20090722
This patch uses the first argument which starts with a number
as version string.Changes in v2:
- Remove unneeded increment.Signed-off-by: Masami Hiramatsu
LKML-Reference:
Suggested-by: H. Peter Anvin
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: Andrew Morton
Signed-off-by: H. Peter Anvin
18 Dec, 2009
23 commits
-
John Blackwood reported:
> on an older Dell PowerEdge 6650 system with 8 cpus (4 are hyper-threaded),
> and 32 bit (x86) kernel, once you change the irq smp_affinity of an irq
> to be less than all cpus in the system, you can never change really the
> irq smp_affinity back to be all cpus in the system (0xff) again,
> even though no error status is returned on the "/bin/echo ff >
> /proc/irq/[n]/smp_affinity" operation.
>
> This is due to that fact that BAD_APICID has the same value as
> all cpus (0xff) on 32bit kernels, and thus the value returned from
> set_desc_affinity() via the cpu_mask_to_apicid_and() function is treated
> as a failure in set_ioapic_affinity_irq_desc(), and no affinity changes
> are made.set_desc_affinity() is already checking if the incoming cpu mask
intersects with the cpu online mask or not. So there is no need
for the apic op cpu_mask_to_apicid_and() to check again
and return BAD_APICID.Remove the BAD_APICID return value from cpu_mask_to_apicid_and()
and also fix set_desc_affinity() to return -1 instead of using BAD_APICID
to represent error conditions (as cpu_mask_to_apicid_and() can return
logical or physical apicid values and BAD_APICID is really to represent
bad physical apic id).Reported-by: John Blackwood
Root-caused-by: John Blackwood
Signed-off-by: Suresh Siddha
LKML-Reference:
Signed-off-by: H. Peter Anvin -
…/rusty/linux-2.6-for-linus
* 'cpumask-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
cpumask: rename tsk_cpumask to tsk_cpus_allowed
cpumask: don't recommend set_cpus_allowed hack in Documentation/cpu-hotplug.txt
cpumask: avoid dereferencing struct cpumask
cpumask: convert drivers/idle/i7300_idle.c to cpumask_var_t
cpumask: use modern cpumask style in drivers/scsi/fcoe/fcoe.c
cpumask: avoid deprecated function in mm/slab.c
cpumask: use cpu_online in kernel/perf_event.c -
…s/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
Keys: KEYCTL_SESSION_TO_PARENT needs TIF_NOTIFY_RESUME architecture support
NOMMU: Optimise away the {dac_,}mmap_min_addr tests
security/min_addr.c: make init_mmap_min_addr() static
keys: PTR_ERR return of wrong pointer in keyctl_get_security() -
…/git/tmlind/linux-omap-2.6
* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
OMAP3: serial - fix bug introduced in
mfd: twl: fix twl4030 rename for remaining driver, board files
USB ehci: replace mach header with plat
omap3: Allow EHCI to be built on OMAP3 -
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
hwmon: (w83627hf) Fix for "No such device"
hwmon: (sht15) Off-by-one error in array index + incorrect constants
hwmon: Add driver for VIA CPU core temperature
hwmon: (smsc47m1) Enable device if needed
hwmon: (smsc47m1) Fail module loading on error
hwmon: (smsc47m1) Only request I/O ports we really use
hwmon: New driver for AMD Family 10h/11h CPUs -
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (40 commits)
[SCSI] 3w-9xxx fix bug in sgl loading
[SCSI] fcoe, libfc: adds enable/disable for fcoe interface
[SCSI] libfc: reduce hold time on SCSI host lock
[SCSI] libfc: remote port gets stuck in restart state without really restarting
[SCSI] pm8001: misc code cleanup
[SCSI] pm8001: enable read HBA SAS address from VPD
[SCSI] pm8001: do not reset local sata as it will not be found if reset
[SCSI] pm8001: bit set pm8001_ha->flags
[SCSI] pm8001:fix potential NULL pointer dereference
[SCSI] pm8001: set SSC down-spreading only to get less errors on some 6G device.
[SCSI] pm8001: fix endian issues with SAS address
[SCSI] pm8001: enhance error handle for IO patch
[SCSI] pm8001: Fix for sata io circular lock dependency.
[SCSI] hpsa: add driver for HP Smart Array controllers.
[SCSI] cxgb3i: always use negative errno in case of error
[SCSI] bnx2i: minor code cleanup and update driver version
[SCSI] bnx2i: Task management ABORT TASK fixes
[SCSI] bnx2i: update CQ arming algorith for 5771x chipsets
[SCSI] bnx2i: Adjust sq_size module parametr to power of 2 only if a non-zero value is specified
[SCSI] bnx2i: Add 5771E device support to bnx2i driver
... -
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (71 commits)
MIPS: Lasat: Fix botched changes to sysctl code.
RTC: rtc-cmos.c: Fix warning on MIPS
MIPS: Cleanup random differences beween lmo and Linus' kernel.
MIPS: No longer hardwire CONFIG_EMBEDDED to y
MIPS: Fix and enhance built-in kernel command line
MIPS: eXcite: Remove platform.
MIPS: Loongson: Cleanups of serial port support
MIPS: Lemote 2F: Suspend CS5536 MFGPT Timer
MIPS: Excite: move iodev_remove to .devexit.text
MIPS: Lasat: Convert to proc_fops / seq_file
MIPS: Cleanup signal code initialization
MIPS: Modularize COP2 handling
MIPS: Move EARLY_PRINTK to Kconfig.debug
MIPS: Yeeloong 2F: Cleanup reset logic using the new ec_write function
MIPS: Yeeloong 2F: Add LID open event as the wakeup event
MIPS: Yeeloong 2F: Add basic EC operations
MIPS: Move several variables from .bss to .init.data
MIPS: Tracing: Make function graph tracer work with -mmcount-ra-address
MIPS: Tracing: Reserve $12(t0) for mcount-ra-address of gcc 4.5
MIPS: Tracing: Make ftrace for MIPS work without -fno-omit-frame-pointer
... -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
Btrfs: make sure fallocate properly starts a transaction
Btrfs: make metadata chunks smaller
Btrfs: Show discard option in /proc/mounts
Btrfs: deny sys_link across subvolumes.
Btrfs: fail mount on bad mount options
Btrfs: don't add extent 0 to the free space cache v2
Btrfs: Fix per root used space accounting
Btrfs: Fix btrfs_drop_extent_cache for skip pinned case
Btrfs: Add delayed iput
Btrfs: Pass transaction handle to security and ACL initialization functions
Btrfs: Make truncate(2) more ENOSPC friendly
Btrfs: Make fallocate(2) more ENOSPC friendly
Btrfs: Avoid orphan inodes cleanup during committing transaction
Btrfs: Avoid orphan inodes cleanup while replaying log
Btrfs: Fix disk_i_size update corner case
Btrfs: Rewrite btrfs_drop_extents
Btrfs: Add btrfs_duplicate_item
Btrfs: Avoid superfluous tree-log writeout -
* 'kmemleak' of git://linux-arm.org/linux-2.6:
kmemleak: fix kconfig for crc32 build error
kmemleak: Reduce the false positives by checking for modified objects
kmemleak: Show the age of an unreferenced object
kmemleak: Release the object lock before calling put_object()
kmemleak: Scan the _ftrace_events section in modules
kmemleak: Simplify the kmemleak_scan_area() function prototype
kmemleak: Do not use off-slab management with SLAB_NOLEAKTRACE -
* 'next-spi' of git://git.secretlab.ca/git/linux-2.6:
spi: spi_txx9.c: use resource_size()
spi: spi_sh_sci.c: use resource_size()
spi: spi_mpc8xxx.c: use resource_size()
spi: spi_bfin5xx.c: use resource_size()
spi: atmel_spi.c: use resource_size()
spi: Add s3c64xx SPI Controller driver
atmel_spi: fix dma addr calculation for len > BUFFER_SIZE
spi_s3c24xx: add FIQ pseudo-DMA support
spi: controller driver for Designware SPI core
spidev: add proper section markers
spidev: use DECLARE_BITMAP instead of declaring the array -
* 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight:
backlight: mbp_nvidia_bl - add two more MacBookPro variants
backlight: Pass device through notify callback in the pwm driver
backlight: PTR_ERR return of wrong pointer in cr_backlight_probe()
backlight: Constify struct backlight_ops
backlight/thinkpad-acpi: issue backlight class eventsFix up trivial conflicts in thinkpad-acpi support (backlight support
already merged earlier). -
* 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds:
leds: leds-pwm: Set led_classdev max_brightness
leds: leds-lp3944.h - remove unneeded includes
leds: use default-on trigger for Cobalt Qube
leds: drivers/leds/leds-ss4200.c: fix return statement
leds: leds-pca9532.h- indent with tabs, not spaces
leds: Add LED class driver for regulator driven LEDs.
leds: leds-cobalt-qube.c: use resource_size()
leds: leds-cobalt-raq.c - use resource_size()
leds: Add driver for ADP5520/ADP5501 MFD PMICs
leds: Add driver for LT3593 controlled LEDs
leds-ss4200: Check pci_enable_device return
leds: leds-alix2c - take port address from MSR
leds: LED driver for Intel NAS SS4200 series (v5) -
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
PCMCIA: fix pxa2xx_lubbock modular build error
[ARM] Update mach-types
[ARM] pxa: fix no reference of cpu_is_pxa25x() in devices.c
[ARM] pxa/cm-x300: add PWM backlight support
revert "[ARM] pxa/cm-x300: add PWM backlight support"
ARM: use flush_kernel_dcache_area() for dmabounce
ARM: add size argument to __cpuc_flush_dcache_page
ARM: 5848/1: kill flush_ioremap_region()
ARM: cache-l2x0: make better use of background cache handling
ARM: cache-l2x0: avoid taking spinlock for every iteration
[ARM] Kirkwood: Add LaCie Network Space v2 support
ARM: dove: fix the mm mmu flags of the pj4 procinfo -
Apparently not all versions of glibc and utilities treat an empty
LC_ALL as nonexistent, causing error messages to be garbled. Instead,
explicitly unexport it from the environment.Reported-and-tested-by: Masami Hiramatsu
Signed-off-by: H. Peter Anvin
LKML-Reference:
Cc: Michal Marek
Cc: Roland Dreier
Cc: Sam Ravnborg -
Fix kernel-doc warnings in printk.c:
Warning(kernel/printk.c:1422): No description found for parameter 'dumper'
Warning(kernel/printk.c:1422): Excess function parameter 'dump' description in 'kmsg_dump_register'
Warning(kernel/printk.c:1451): No description found for parameter 'dumper'
Warning(kernel/printk.c:1451): Excess function parameter 'dump' description in 'kmsg_dump_unregister'Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I added blk_run_backing_dev on page_cache_async_readahead so readahead I/O
is unpluged to improve throughput on especially RAID environment.The normal case is, if page N become uptodate at time T(N), then T(N)
Acked-by: Wu Fengguang
Cc: Jens Axboe
Cc: KOSAKI Motohiro
Tested-by: Ronald
Cc: Bart Van Assche
Cc: Vladislav Bolkhovitin
Cc: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
RTC core won't allow wakeup alarms to be set if RTC devices' parent (i.e.
i2c_client or spi_device) isn't wakeup capable.For I2C devices there is I2C_CLIENT_WAKE flag exists that we can pass via
board info, and if set, I2C core will initialize wakeup capability. For
SPI devices there is no such flag at all.I believe that it's not platform code responsibility to allow or disallow
wakeups, instead, drivers themselves should set the capability if a device
can trigger wakeups.That's what drivers/base/power/sysfs.c says:
* It is the responsibility of device drivers to enable (or disable)
* wakeup signaling as part of changing device power states, respecting
* the policy choices provided through the driver model.I2C and SPI RTC devices send wakeup events via interrupt lines, so we
should set the wakeup capability if IRQ is routed.Ideally we should also check irq for wakeup capability before setting
device's capability, i.e.if (can_irq_wake(irq))
device_set_wakeup_capable(&client->dev, 1);But there is no can_irq_wake() call exist, and it is not that trivial to
implement it for all interrupts controllers and complex/cascaded setups.drivers/base/power/sysfs.c also covers these cases:
* Devices may not be able to generate wakeup events from all power
* states. Also, the events may be ignored in some configurations;
* for example, they might need help from other devices that aren't
* activeSo there is no guarantee that wakeup will actually work, and so I think
there is no point in being pedantic wrt checking IRQ wakeup capability.Signed-off-by: Anton Vorontsov
Cc: David Brownell
Cc: Ben Dooks
Cc: Jean Delvare
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add support for the Secure Digital Host Controller Interface found on the
"Hollywood" chipset of the Nintendo Wii video game console.Signed-off-by: Albert Herranz
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch breaks down sdhci-of into a core portion and a eSDHC portion,
clearing the path to easily support additional hardware using the same OF
driver.Signed-off-by: Albert Herranz
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch renames sdhci-of.c to sdhci-of-core.c before reorganizing the
driver to support additional hardware.The driver is still built as sdhci-of despite the rename of the file. No
functional change.Signed-off-by: Albert Herranz
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Albert Herranz
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Daniel Drake noticed a crash in the error path of mmc_attach_sdio(). This
bug is discussed at http://dev.laptop.org/ticket/9707.BUG: unable to handle kernel paging request at 6b6b6c57
IP: [] sdio_remove_func+0x9/0x27
Call Trace:
[] ? mmc_sdio_remove+0x34/0x65
[] ? mmc_attach_sdio+0x217/0x240
[] ? mmc_rescan+0x1a2/0x20f
[] ? worker_thread+0x156/0x1eWe need to accurately track how many SDIO functions have been initialised
(and keep card->sdio_funcs in sync) so that we don't try to remove more
functions than we initialised if we hit the error path in
mmc_attach_sdio().Without this patch if we hit the error path in mmc_attach_sdio() we run
the risk of deferencing invalid memory in sdio_remove_func(), leading to a
crash.Signed-off-by: Matt Fleming
Cc: Daniel Drake
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
