10 years agovsprintf: add %pRt, %pRf to print struct resource details
Bjorn Helgaas [Tue, 6 Oct 2009 21:33:39 +0000]
vsprintf: add %pRt, %pRf to print struct resource details

This adds support for printing struct resource type and flag information.
For example, "%pRt" looks like "[mem 0x80080000000-0x8008001ffff 64bit pref]",
and "%pRf" looks like "[mem 0xff5e2000-0xff5e2007 pref flags 0x1]".

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

10 years agovsprintf: add %pR support for IRQ and DMA resources
Bjorn Helgaas [Tue, 6 Oct 2009 21:33:34 +0000]
vsprintf: add %pR support for IRQ and DMA resources

Print addresses (IO port numbers and memory addresses) in hex, but print
others (IRQs and DMA channels) in decimal.  Only print the end if it's
different from the start.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

10 years agovsprintf: fix io/mem resource width
Bjorn Helgaas [Tue, 6 Oct 2009 21:33:29 +0000]
vsprintf: fix io/mem resource width

The leading "0x" consumes field width, so leave space for it in addition to
the 4 or 8 hex digits.  This means we'll print "0x0000-0x01df" rather than
"0x00-0x1df", for example.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

10 years agoPCI hotplug: acpiphp should be linked after vendor drivers
Matthew Garrett [Mon, 26 Oct 2009 17:18:22 +0000]
PCI hotplug: acpiphp should be linked after vendor drivers

As a followup to 71a082efc9fdc12068a3cee6cebb1330b00ebeee, it's conceivable
that some vendors may expose PCI hotplug functionality through both vendor
mechanisms and ACPI. The native mechanism will generally be a superset of
any functionality provided via ACPI, so the acpiphp driver should always
be initialised after any others. Change the link order such that acpiphp
will not be initialised until any other statically linked drivers have had
an opportunity to claim the hardware.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

10 years agoPCI hotplug: change PCI nomenclature
Stefan Assmann [Mon, 26 Oct 2009 13:44:46 +0000]
PCI hotplug: change PCI nomenclature

Change PCI nomenclature according to

Signed-off-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

10 years agox86/PCI: Use generic cacheline sizing instead of per-vendor tests.
Dave Jones [Wed, 14 Oct 2009 20:31:39 +0000]
x86/PCI: Use generic cacheline sizing instead of per-vendor tests.

Instead of the PCI code needing to have code to determine the
cacheline size of each processor, use the data the cpu identification
code should have already determined during early boot.

(The vendor checks are also incomplete, and don't take into account
 modern CPUs)

I've been carrying a variant of this code in Fedora for a while,
that prints debug information.  There are a number of cases where we
are currently setting the PCI cacheline size to 32 bytes, when the CPU
cacheline size is 64 bytes.  With this patch, we set them both the same.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

10 years agoPCI: pci_dfl_cache_line_size is __devinitdata
Tejun Heo [Thu, 8 Oct 2009 09:59:53 +0000]
PCI: pci_dfl_cache_line_size is __devinitdata

pci_dfl_cache_line_size is marked as __initdata but referenced by
pci_init() which is __devinit.  Make it __devinitdata instead of

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

10 years agopccard: configure CLS on attach
Tejun Heo [Tue, 22 Sep 2009 08:34:48 +0000]
pccard: configure CLS on attach

For non hotplug PCI devices, the system firmware usually configures
CLS correctly.  For pccard devices system firmware can't do it and
Linux PCI layer doesn't do it either.  Unfortunately this leads to
poor performance for certain devices (sata_sil).  Unless MWI, which
requires separate configuration, is to be used, CLS doesn't affect
correctness, so the configuration should be harmless.

This patch makes pci_set_cacheline_size() always built and export it
and make pccard call it during attach.

Please note that some other PCI hotplug drivers (shpchp and pciehp)
also configure CLS on hotplug.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Daniel Ritz <daniel.ritz@gmx.ch>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Greg KH <greg@kroah.com>
Cc: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Cc: Axel Birndt <towerlexa@gmx.de>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

10 years agosparc64/PCI: drop PCI_CACHE_LINE_BYTES
Tejun Heo [Tue, 22 Sep 2009 08:34:17 +0000]

sparc64 is now the only user of PCI_CACHE_LINE_BYTES.  Drop it and set
pci_dfl_cache_line_size from pcibios_init() instead and drop
PCI_CACHE_LINE_BYTES handling from generic pci code.

Orignally-From: David Miller <davem@davemloft.net>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

10 years agoPCI: determine CLS more intelligently
Jesse Barnes [Mon, 26 Oct 2009 20:20:44 +0000]
PCI: determine CLS more intelligently

Till now, CLS has been determined either by arch code or as
L1_CACHE_BYTES.  Only x86 and ia64 set CLS explicitly and x86 doesn't
always get it right.  On most configurations, the chance is that
firmware configures the correct value during boot.

This patch makes pci_init() determine CLS by looking at what firmware
has configured.  It scans all devices and if all non-zero values
agree, the value is used.  If none is configured or there is a
disagreement, pci_dfl_cache_line_size is used.  arch can set the dfl
value (via PCI_CACHE_LINE_BYTES or pci_dfl_cache_line_size) or
override the actual one.

ia64, x86 and sparc64 updated to set the default cls instead of the
actual one.

While at it, declare pci_cache_line_size and pci_dfl_cache_line_size
in pci.h and drop private declarations from arch code.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: David Miller <davem@davemloft.net>
Acked-by: Greg KH <gregkh@suse.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

10 years agox86/PCI: read root resources from IOH on Intel
Yinghai Lu [Mon, 5 Oct 2009 04:54:24 +0000]
x86/PCI: read root resources from IOH on Intel

For intel systems with multi IOH, we should read peer root resources
directly from PCI config space, and don't trust _CRS.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt...
Linus Torvalds [Wed, 4 Nov 2009 15:05:43 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/anholt/drm-intel

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel:
  drm/i915: Ironlake suspend/resume support
  drm/i915: kill warning in intel_find_pll_g4x_dp
  drm/i915: update watermarks before enabling PLLs
  drm/i915: add FIFO watermark support for G4x
  drm/i915: quiet DP i2c init
  drm/i915: fix panel fitting filter coefficient select for Ironlake
  drm/i915: fix to setup display reference clock control on Ironlake
  drm/i915: Install a fence register for fbc on g4x
  drm/i915: save/restore BLC histogram control reg across suspend/resume
  drm/i915: Fix FDI M/N setting according with correct color depth
  drm/i915: disable powersave feature for Ironlake currently
  drm/i915: Fix render reclock availability detection.
  drm/i915: Save and restore the GM45 FBC regs on suspend and resume.
  drm/i915: Set the LVDS_BORDER when using LVDS scaling mode
  drm/i915: disable FBC for Pineview, fixing a boot hang.

10 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Wed, 4 Nov 2009 02:16:21 +0000]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  cfq-iosched: limit coop preemption
  cfq-iosched: fix bad return value cfq_should_preempt()
  backing-dev: bdi sb prune should be in the unregister path, not destroy
  Fix bio_alloc() and bio_kmalloc() documentation
  bio_put(): add bio_clone() to the list of functions in the comment

10 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
Linus Torvalds [Wed, 4 Nov 2009 02:15:18 +0000]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  sata_via: Remove redundant device ID for VIA VT8261
  drivers/ata/libata: Move dereference after NULL test
  ahci: Enable SB600 64bit DMA on MSI K9A2 Platinum v2

10 years agoLinux 2.6.32-rc6
Linus Torvalds [Tue, 3 Nov 2009 19:37:49 +0000]
Linux 2.6.32-rc6

10 years agosata_via: Remove redundant device ID for VIA VT8261
JosephChan@via.com.tw [Mon, 2 Nov 2009 11:36:08 +0000]
sata_via: Remove redundant device ID for VIA VT8261

Just remove redundant device ID for VIA VT8261.
The device ID 0x9000 and 0x9040 are redundant (for VT8261).
The 0x9040 is reserved for other usage.

Signed-off-by: Joseph Chan <josephchan@via.com.tw>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

10 years agodrivers/ata/libata: Move dereference after NULL test
Julia Lawall [Sat, 17 Oct 2009 06:41:47 +0000]
drivers/ata/libata: Move dereference after NULL test

In each case, if the NULL test on qc is needed, then the derefernce
should be after the NULL test.

A simplified version of the semantic match that detects this problem is as
follows (http://coccinelle.lip6.fr/):

// <smpl>
@match exists@
expression x, E;
identifier fld;

* x->fld
  ... when != \(x = E\|&x\)
* x == NULL
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

10 years agoahci: Enable SB600 64bit DMA on MSI K9A2 Platinum v2
Mark Nelson [Tue, 3 Nov 2009 09:06:48 +0000]
ahci: Enable SB600 64bit DMA on MSI K9A2 Platinum v2

Like the Asus M2A-VM, MSI's K9A2 Platinum (MS-7376) can also support 64bit
DMA. It is a new enough board that all the BIOS releases work correctly with
64bit DMA enabled.

Signed-off-by: Mark Nelson <mdnelson8@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

10 years agocfq-iosched: limit coop preemption
Shaohua Li [Tue, 3 Nov 2009 19:25:02 +0000]
cfq-iosched: limit coop preemption

CFQ has an optimization for cooperated applications. if several
io-context have close requests, they will get boost. But the
optimization get abused. Considering thread a, b, which work on one
file. a reads sectors s, s+2, s+4, ...; b reads sectors s+1, s+3, s
+5, ... Both a and b are sequential read, so they can open idle window.
a reads a sector s and goes to idle window and wakeup b. b reads sector
s+1, since in current implementation, cfq_should_preempt() thinks a and
b are cooperators, b will preempt a. b then reads sector s+1 and goes to
idle window and wakeup a. for the same reason, a will preempt b and
reads s+2. a and b will continue the circle. The circle will be very
long, and a and b will occupy whole disk queue. Other applications will
nearly have no chance to run.

Fix this limiting coop preempt until a queue is scheduled normally

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agocfq-iosched: fix bad return value cfq_should_preempt()
Jens Axboe [Tue, 3 Nov 2009 19:21:35 +0000]
cfq-iosched: fix bad return value cfq_should_preempt()

Commit a6151c3a5c8e1ff5a28450bc8d6a99a2a0add0a7 inadvertently reversed
a preempt condition check, potentially causing a performance regression.
Make the meta check correct again.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agobacking-dev: bdi sb prune should be in the unregister path, not destroy
Jens Axboe [Tue, 3 Nov 2009 19:18:44 +0000]
backing-dev: bdi sb prune should be in the unregister path, not destroy

Commit 592b09a42fc3ae6737a0f3ecf4fee42ecd0296f8 was different from
the tested path, in that it moved the bdi super_block prune from
unregister to destroy context. This doesn't fully fix the sync hang
bug on unexpected device removal, as need to prune the bdi cache
pointer before killing flusher thread.

Tested-by: Artur Skawina <art.08.09@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoMerge branch 'for-linus' of git://github.com/at91linux/linux-2.6-at91
Linus Torvalds [Tue, 3 Nov 2009 19:15:25 +0000]
Merge branch 'for-linus' of git://github.com/at91linux/linux-2.6-at91

* 'for-linus' of git://github.com/at91linux/linux-2.6-at91:
  at91: at91sam9g45 family: identify several chip versions
  avr32: add two new at91 to cpu.h definition

10 years agoat91: at91sam9g45 family: identify several chip versions
Nicolas Ferre [Mon, 21 Sep 2009 10:03:56 +0000]
at91: at91sam9g45 family: identify several chip versions

cpu_is_xxx() macros are identifying generic at91sam9g45 chip. This patch adds
the capacity to differentiate Engineering Samples and final lots through the
inclusion of  at91_cpu_fully_identify() and the related chip IDs with chip
version field preserved.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>

10 years agoavr32: add two new at91 to cpu.h definition
Nicolas Ferre [Mon, 6 Jul 2009 10:15:12 +0000]
avr32: add two new at91 to cpu.h definition

Somme common drivers will need those at91 cpu_is_xxx() definitions. As
at91sam9g10 and at91sam9g45 are on the way to linus' tree, here is the patch
that adds those chips to cpu.h in AVR32 architecture.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

10 years agoMerge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Tue, 3 Nov 2009 16:09:57 +0000]
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (38 commits)
  MIPS: O32: Fix ppoll
  MIPS: Oprofile: Rename cpu_type from godson2 to loongson2
  MIPS: Alchemy: Fix hang with high-frequency edge interrupts
  MIPS: TXx9: Fix spi-baseclk value
  MIPS: bcm63xx: Set the correct BCM3302 CPU name
  MIPS: Loongson 2: Set cpu_has_dc_aliases and cpu_icache_snoops_remote_store
  MIPS: Avoid potential hazard on Context register
  MIPS: Octeon: Use lockless interrupt controller operations when possible.
  MIPS: Octeon: Use write_{un,}lock_irq{restore,save} to set irq affinity
  MIPS: Set S-cache linesize to 64-bytes for MTI's S-cache
  MIPS: SMTC: Avoid queing multiple reschedule IPIs
  MIPS: GCMP: Avoid accessing registers when they are not present
  MIPS: GIC: Random fixes and enhancements.
  MIPS: CMP: Fix memory barriers for correct operation of amon_cpu_start
  MIPS: Fix abs.[sd] and neg.[sd] emulation for NaN operands
  MIPS: SPRAM: Clean up support code a little
  MIPS: 1004K: Enable SPRAM support.
  MIPS: Malta: Enable PCI 2.1 compatibility in PIIX4
  MIPS: Kconfig: Fix duplicate default value for MIPS_L1_CACHE_SHIFT.
  MIPS: MTI: Fix accesses to device registers on MIPS boards

10 years agoMerge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspe...
Linus Torvalds [Tue, 3 Nov 2009 15:52:57 +0000]
Merge branch 'pm-fixes' of git://git./linux/kernel/git/rafael/suspend-2.6

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM: Remove some debug messages producing too much noise
  PM: Fix warning on suspend errors
  PM / Hibernate: Add newline to load_image() fail path
  PM / Hibernate: Fix error handling in save_image()
  PM / Hibernate: Fix blkdev refleaks
  PM / yenta: Split resume into early and late parts (rev. 4)

10 years agoCorrect nr_processes() when CPUs have been unplugged
Ian Campbell [Tue, 3 Nov 2009 10:11:14 +0000]
Correct nr_processes() when CPUs have been unplugged

nr_processes() returns the sum of the per cpu counter process_counts for
all online CPUs. This counter is incremented for the current CPU on
fork() and decremented for the current CPU on exit(). Since a process
does not necessarily fork and exit on the same CPU the process_count for
an individual CPU can be either positive or negative and effectively has
no meaning in isolation.

Therefore calculating the sum of process_counts over only the online
CPUs omits the processes which were started or stopped on any CPU which
has since been unplugged. Only the sum of process_counts across all
possible CPUs has meaning.

The only caller of nr_processes() is proc_root_getattr() which
calculates the number of links to /proc as
        stat->nlink = proc_root.nlink + nr_processes();

You don't have to be all that unlucky for the nr_processes() to return a
negative value leading to a negative number of links (or rather, an
apparently enormous number of links). If this happens then you can get
failures where things like "ls /proc" start to fail because they got an
-EOVERFLOW from some stat() call.

Example with some debugging inserted to show what goes on:
        # ps haux|wc -l
        nr_processes: CPU0:     90
        nr_processes: CPU1:     1030
        nr_processes: CPU2:     -900
        nr_processes: CPU3:     -136
        nr_processes: TOTAL:    84
        proc_root_getattr. nlink 12 + nr_processes() 84 = 96
        # echo 0 >/sys/devices/system/cpu/cpu1/online
        # ps haux|wc -l
        nr_processes: CPU0:     85
        nr_processes: CPU2:     -901
        nr_processes: CPU3:     -137
        nr_processes: TOTAL:    -953
        proc_root_getattr. nlink 12 + nr_processes() -953 = -941
        # stat /proc/
        nr_processes: CPU0:     84
        nr_processes: CPU2:     -901
        nr_processes: CPU3:     -137
        nr_processes: TOTAL:    -954
        proc_root_getattr. nlink 12 + nr_processes() -954 = -942
          File: `/proc/'
          Size: 0               Blocks: 0          IO Block: 1024   directory
        Device: 3h/3d   Inode: 1           Links: 4294966354
        Access: (0555/dr-xr-xr-x)  Uid: (    0/    root)   Gid: (    0/    root)
        Access: 2009-11-03 09:06:55.000000000 +0000
        Modify: 2009-11-03 09:06:55.000000000 +0000
        Change: 2009-11-03 09:06:55.000000000 +0000

I'm not 100% convinced that the per_cpu regions remain valid for offline
CPUs, although my testing suggests that they do. If not then I think the
correct solution would be to aggregate the process_count for a given CPU
into a global base value in cpu_down().

This bug appears to pre-date the transition to git and it looks like it
may even have been present in linux-2.6.0-test7-bk3 since it looks like
the code Rusty patched in http://lwn.net/Articles/64773/ was already

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Tue, 3 Nov 2009 15:46:17 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: gpio-keys - use IRQF_SHARED
  Input: winbond-cir - select LEDS_TRIGGERS
  Input: i8042 - try to get stable CTR value when initializing
  Input: atkbd - add a quirk for OQO 01+ multimedia keys

10 years agoMerge branch 'fixes-s3c-2632-rc5' of git://git.fluff.org/bjdooks/linux
Linus Torvalds [Tue, 3 Nov 2009 15:46:05 +0000]
Merge branch 'fixes-s3c-2632-rc5' of git://git.fluff.org/bjdooks/linux

* 'fixes-s3c-2632-rc5' of git://git.fluff.org/bjdooks/linux:
  ARM: S3C2410: Fix sparse warnings in arch/arm/mach-s3c2410/gpio.c
  ARM: S3C2440: mini2440: Fix spare warnings
  ARM: S3C24XX: Fix warnings in arch/arm/plat-s3c24xx/gpio.c
  ARM: S3C2440: mini2440: Fix missing CONFIG_S3C_DEV_USB_HOST
  ARM: S3C24XX: arch/arm/plat-s3c24xx: Move dereference after NULL test
  ARM: S3C: Fix adc function exports
  ARM: S3C2410: Fix link if CONFIG_S3C2410_IOTIMING is not set
  ARM: S3C24XX: Introduce S3C2442B CPU
  ARM: S3C24XX: Define a macro to avoid compilation error
  ARM: S3C: Add info for supporting circular DMA buffers
  ARM: S3C64XX: Set rate of crystal mux
  ARM: S3C64XX: Fix S3C64XX_CLKDIV0_ARM_MASK value

10 years agoMerge branch 'i2c-fixes' of git://git.fluff.org/bjdooks/linux
Linus Torvalds [Tue, 3 Nov 2009 15:45:50 +0000]
Merge branch 'i2c-fixes' of git://git.fluff.org/bjdooks/linux

* 'i2c-fixes' of git://git.fluff.org/bjdooks/linux:
  i2c-mpc: Do not generate STOP after read.
  i2c: imx: disable clock when it's possible to save power.
  i2c: imx: only imx1 needs disable delay
  i2c: imx: check busy bit when START/STOP

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke...
Linus Torvalds [Tue, 3 Nov 2009 15:45:22 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/ryusuke/nilfs2

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
  nilfs2: add zero-fill for new btree node buffers
  nilfs2: fix irregular checkpoint creation due to data flush
  nilfs2: fix dirty page accounting leak causing hang at write

10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Tue, 3 Nov 2009 15:44:01 +0000]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (21 commits)
  mac80211: check interface is down before type change
  cfg80211: fix NULL ptr deref
  libertas if_usb: Fix crash on 64-bit machines
  mac80211: fix reason code output endianness
  mac80211: fix addba timer
  ath9k: fix misplaced semicolon on rate control
  b43: Fix DMA TX bounce buffer copying
  mac80211: fix BSS leak
  rt73usb.c : more ids
  ipw2200: fix oops on missing firmware
  gre: Fix dev_addr clobbering for gretap
  sky2: set carrier off in probe
  net: fix sk_forward_alloc corruption
  pcnet_cs: add cis of PreMax PE-200 ethernet pcmcia card
  r8169: Fix card drop incoming VLAN tagged MTU byte large jumbo frames
  ibmtr: possible Read buffer overflow?
  net: Fix RPF to work with policy routing
  net: fix kmemcheck annotations
  e1000e: rework disable K1 at 1000Mbps for 82577/82578
  e1000e: config PHY via software after resets

10 years agoPM: Remove some debug messages producing too much noise
Pavel Machek [Wed, 28 Oct 2009 21:56:10 +0000]
PM: Remove some debug messages producing too much noise

pm_runtime_idle() is somewhat noisy. Remove debug prints.

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

10 years agoPM: Fix warning on suspend errors
Romit Dasgupta [Wed, 28 Oct 2009 21:56:02 +0000]
PM: Fix warning on suspend errors

Fixes the point where we need to complete the power transition when
device suspend fails, so that we don't print warnings about devices
added to the device hierarchy after a failing suspend.

[rjw: Modified changelog.]

Signed-off-by: Romit Dasgupta <romit@ti.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

10 years agoPM / Hibernate: Add newline to load_image() fail path
Jiri Slaby [Wed, 28 Oct 2009 21:55:42 +0000]
PM / Hibernate: Add newline to load_image() fail path

Finish a line by \n when load_image fails in the middle of loading.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

10 years agoPM / Hibernate: Fix error handling in save_image()
Jiri Slaby [Wed, 28 Oct 2009 21:55:33 +0000]
PM / Hibernate: Fix error handling in save_image()

There are too many retval variables in save_image(). Thus error return
value from snapshot_read_next() may be ignored and only part of the
snapshot (successfully) written.

Remove 'error' variable, invert the condition in the do-while loop
and convert the loop to use only 'ret' variable.

Switch the rest of the function to consider only 'ret'.

Also make sure we end printed line by \n if an error occurs.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

10 years agoPM / Hibernate: Fix blkdev refleaks
Jiri Slaby [Wed, 7 Oct 2009 20:37:35 +0000]
PM / Hibernate: Fix blkdev refleaks

While cruising through the swsusp code I found few blkdev reference
leaks of resume_bdev.

swsusp_read: remove blkdev_put altogether. Some fail paths do
             not do that.
swsusp_check: make sure we always put a reference on fail paths
software_resume: all fail paths between swsusp_check and swsusp_read
                 omit swsusp_close. Add it in those cases. And since
                 swsusp_read doesn't drop the reference anymore, do
                 it here unconditionally.

[rjw: Fixed a small coding style issue.]

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

10 years agoPM / yenta: Split resume into early and late parts (rev. 4)
Rafael J. Wysocki [Tue, 3 Nov 2009 09:54:58 +0000]
PM / yenta: Split resume into early and late parts (rev. 4)

Commit 0c570cdeb8fdfcb354a3e9cd81bfc6a09c19de0c
(PM / yenta: Fix cardbus suspend/resume regression) caused resume to
fail on systems with two CardBus bridges.  While the exact nature
of the failure is not known at the moment, it can be worked around by
splitting the yenta resume into an early part, executed during the
early phase of resume, that will only resume the socket and power it
up if there was a card in it during suspend, and a late part,
executed during "regular" resume, that will carry out all of the
remaining yenta resume operations.

Fixes http://bugzilla.kernel.org/show_bug.cgi?id=14334, which is a
listed regression from 2.6.31.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Reported-by: Stephen J. Gowdy <gowdy@cern.ch>
Tested-by: Jose Marino <braket@hotmail.com>

10 years agoInput: gpio-keys - use IRQF_SHARED
Dmitry Eremin-Solenikov [Tue, 3 Nov 2009 06:04:18 +0000]
Input: gpio-keys - use IRQF_SHARED

There is nothing that disallows gpio-keys to share it's IRQ line
w/ other drivers. Make it use IRQF_SHARED in request_irq().

An example of other driver with which I'd like to share IRQ line
for GPIO buttons is ledtrig-gpio.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

10 years agoInput: winbond-cir - select LEDS_TRIGGERS
David Härdeman [Tue, 3 Nov 2009 05:57:41 +0000]
Input: winbond-cir - select LEDS_TRIGGERS

drivers/input/misc/winbond-cir.c depends on LEDS_TRIGGERS so
add an appropriate select to drivers/input/misc/Kconfig

Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

10 years agoInput: i8042 - try to get stable CTR value when initializing
Dmitry Torokhov [Tue, 3 Nov 2009 05:57:40 +0000]
Input: i8042 - try to get stable CTR value when initializing

If user presses keys while i8042 is being initialized there is a chance
that keyboard data will be mistaken for results of Read Control Register
command causing futher troubles. Work around this issue by reading CTR
several times and stop when we get matching results.

Reported-and-tested-by: Dave Young <hidave.darkstar@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

10 years agoMerge commit 'v2.6.32-rc5' into for-linus
Dmitry Torokhov [Tue, 3 Nov 2009 06:10:07 +0000]
Merge commit 'v2.6.32-rc5' into for-linus

10 years agonilfs2: add zero-fill for new btree node buffers
Ryusuke Konishi [Sun, 13 Sep 2009 16:20:35 +0000]
nilfs2: add zero-fill for new btree node buffers

Adds missing initialization of newly allocated b-tree node buffers.
This avoids garbage data to be mixed in b-tree node blocks.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>

10 years agonilfs2: fix irregular checkpoint creation due to data flush
Ryusuke Konishi [Mon, 2 Nov 2009 06:08:13 +0000]
nilfs2: fix irregular checkpoint creation due to data flush

When nilfs flushes out dirty data to reduce memory pressure, creation
of checkpoints is wrongly postponed.  This bug causes irregular
checkpoint creation especially in small footprint systems.

To correct this issue, a timer for the checkpoint creation has to be
continued if a log writer does not create a checkpoint.

This will do the correction.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>

10 years agonilfs2: fix dirty page accounting leak causing hang at write
Ryusuke Konishi [Mon, 2 Nov 2009 15:25:53 +0000]
nilfs2: fix dirty page accounting leak causing hang at write

Bruno Prémont and Dunphy, Bill noticed me that NILFS will certainly
hang on ARM-based targets.

I found this was caused by an underflow of dirty pages counter.  A
b-tree cache routine was marking page dirty without adjusting page
account information.

This fixes the dirty page accounting leak and resolves the hang on
arm-based targets.

Reported-by: Bruno Prémont <bonbons@linux-vserver.org>
Reported-by: Dunphy, Bill <WDunphy@tandbergdata.com>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Tested-by: Bruno Prémont <bonbons@linux-vserver.org>
Cc: stable <stable@kernel.org>

10 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
David S. Miller [Tue, 3 Nov 2009 03:18:50 +0000]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6

10 years agoi2c-mpc: Do not generate STOP after read.
Joakim Tjernlund [Tue, 13 Oct 2009 08:12:03 +0000]
i2c-mpc: Do not generate STOP after read.

The driver always ends a read with a STOP condition which
breaks subsequent I2C reads/writes in the same transaction as
these expect to do a repeated START(ReSTART).

This will also help I2C multimaster as the bus will not be released
after the first read, but when the whole transaction ends.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

10 years agoi2c: imx: disable clock when it's possible to save power.
Richard Zhao [Sat, 17 Oct 2009 09:46:24 +0000]
i2c: imx: disable clock when it's possible to save power.

Enable clock before START, disable it after STOP.

Signed-off-by: Richard Zhao <linuxzsc@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

10 years agoi2c: imx: only imx1 needs disable delay
Richard Zhao [Sat, 17 Oct 2009 09:46:23 +0000]
i2c: imx: only imx1 needs disable delay

check cpu_is_mx1() when disable delay.

Signed-off-by: Richard Zhao <linuxzsc@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

10 years agoi2c: imx: check busy bit when START/STOP
Richard Zhao [Sat, 17 Oct 2009 09:46:22 +0000]
i2c: imx: check busy bit when START/STOP

The controller can't do anything else before it actually generates START/STOP.
So we check busy bit to make sure START/STOP is successfully finished.

If we don't check busy bit, START/STOP may fail on some fast CPUs.

Signed-off-by: Richard Zhao <linuxzsc@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh...
Linus Torvalds [Mon, 2 Nov 2009 20:23:21 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/ericvh/v9fs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
  9p: fix readdir corner cases
  9p: fix readlink
  9p: fix a small bug in readdir for long directories

10 years agomac80211: check interface is down before type change
Johannes Berg [Sun, 1 Nov 2009 18:25:40 +0000]
mac80211: check interface is down before type change

For some strange reason the netif_running() check
ended up after the actual type change instead of
before, potentially causing all kinds of problems
if the interface is up while changing the type;
one of the problems manifests itself as a warning:

WARNING: at net/mac80211/iface.c:651 ieee80211_teardown_sdata+0xda/0x1a0 [mac80211]()
Hardware name: Aspire one
Pid: 2596, comm: wpa_supplicant Tainted: G        W  2.6.31-10-generic #32-Ubuntu
Call Trace:
 [] warn_slowpath_common+0x6d/0xa0
 [] warn_slowpath_null+0x15/0x20
 [] ieee80211_teardown_sdata+0xda/0x1a0 [mac80211]
 [] ieee80211_if_change_type+0x4a/0xc0 [mac80211]
 [] ieee80211_change_iface+0x61/0xa0 [mac80211]
 [] cfg80211_wext_siwmode+0xc7/0x120 [cfg80211]
 [] ioctl_standard_call+0x58/0xf0


Cc: Arjan van de Ven <arjan@infradead.org>
Cc: stable@kernel.org
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agocfg80211: fix NULL ptr deref
Johannes Berg [Sat, 31 Oct 2009 06:40:37 +0000]
cfg80211: fix NULL ptr deref

commit 211a4d12abf86fe0df4cd68fc6327cbb58f56f81
  Author: Johannes Berg <johannes@sipsolutions.net>
  Date:   Tue Oct 20 15:08:53 2009 +0900

      cfg80211: sme: deauthenticate on assoc failure

introduced a potential NULL pointer dereference that
some people have been hitting for some reason -- the
params.bssid pointer is not guaranteed to be non-NULL
for what seems to be a race between various ways of
reaching the same thing.

While I'm trying to analyse the problem more let's
first fix the crash. I think the real fix may be to
avoid doing _anything_ if it ended up being NULL, but
right now I'm not sure yet.

I think
might also be this issue.

Reported-by: Parag Warudkar <parag.lkml@gmail.com>
Tested-by: Parag Warudkar <parag.lkml@gmail.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
Linus Torvalds [Mon, 2 Nov 2009 18:22:25 +0000]
Merge branch 'release' of git://git./linux/kernel/git/aegl/linux-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  Revert "[IA64] fix percpu warnings"
  [IA64] fix percpu warnings
  [IA64] SMT friendly version of spin_unlock_wait()
  [IA64] use printk_once() unaligned.c/io_common.c
  [IA64] Require SAL 3.2 in order to do extended config space ops
  [IA64] unsigned cannot be less than 0 in sn_hwperf_ioctl()
  [IA64] Restore registers in the stack on INIT
  [IA64] Re-implement spinaphores using ticket lock concepts
  [IA64] Squeeze ticket locks back into 4 bytes.

10 years agoRevert "ext4: Remove journal_checksum mount option and enable it by default"
Linus Torvalds [Mon, 2 Nov 2009 18:15:27 +0000]
Revert "ext4: Remove journal_checksum mount option and enable it by default"

This reverts commit d0646f7b636d067d715fab52a2ba9c6f0f46b0d7, as
requested by Eric Sandeen.

It can basically cause an ext4 filesystem to miss recovery (and thus get
mounted with errors) if the journal checksum does not match.

Quoth Eric:

   "My hand-wavy hunch about what is happening is that we're finding a
    bad checksum on the last partially-written transaction, which is
    not surprising, but if we have a wrapped log and we're doing the
    initial scan for head/tail, and we abort scanning on that bad
    checksum, then we are essentially running an unrecovered filesystem.

    But that's hand-wavy and I need to go look at the code.

    We lived without journal checksums on by default until now, and at
    this point they're doing more harm than good, so we should revert
    the default-changing commit until we can fix it and do some good
    power-fail testing with the fixes in place."



for all the gory details.

Requested-by: Eric Sandeen <sandeen@redhat.com>
Cc: Theodore Tso <tytso@mit.edu>
Cc: Alexey Fisher <bug-track@fisher-privat.net>
Cc: Maxim Levitsky <maximlevitsky@gmail.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Mathias Burén <mathias.buren@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agoMerge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Mon, 2 Nov 2009 17:53:19 +0000]
Merge branch 'for-linus' of /home/rmk/linux-2.6-arm

* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: ensure initial page tables are setup for SMP systems
  ARM: 5776/1: Check compiler version and EABI support when adding ARM unwind support.
  ARM: 5774/1: Fix Realview ARM1176PB board reboot
  ARM: Fix errata 411920 workarounds
  ARM: Fix sparsemem with SPARSEMEM_EXTREME enabled
  ARM: Use GFP_DMA only for masks _less_ than 32-bit
  ARM: integrator: allow Integrator to be built with highmem
  ARM: Fix signal restart issues with NX and OABI compat

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Mon, 2 Nov 2009 17:50:22 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda - Don't check invalid HP pin
  ALSA: dummy - Fix descriptions of pcm_substreams parameter
  ALSA: pcmcia: use dynamic debug infrastructure, deprecate CS_CHECK (sound)
  ALSA: hda: Use quirk mask for Dell Inspiron Mini9/Vostro A90 using ALC268
  sound: via82xx: deactivate DXS controls of inactive streams
  ALSA: snd-usb-caiaq: Bump version number to 1.3.20
  ALSA: snd-usb-caiaq: Lock on stream start/unpause
  ALSA: snd-usb-caiaq: Missing lock around use of buffer positions
  ALSA: sound/parisc: Move dereference after NULL test
  ALSA: sound: Move dereference after NULL test and drop unnecessary NULL tests
  ALSA: hda_intel: Add the Linux device ID for NVIDIA HDA controller
  ALSA: pcsp - Fix nforce workaround
  ALSA: SND_CS5535AUDIO: Remove the X86 platform dependency
  ASoC: Amstrad Delta: add info about the line discipline requirement to Kconfig help text
  ASoC: Fix possible codec_dai->ops NULL pointer problems
  ALSA: hda - Fix capture source checks for ALC662/663 codecs
  ASoC: Serialize access to dapm_power_widgets()

10 years agoMerge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 2 Nov 2009 17:46:33 +0000]
Merge branch 'core-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  futex: Fix spurious wakeup for requeue_pi really

10 years agoMerge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 2 Nov 2009 17:46:06 +0000]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf tools: Remove -Wcast-align
  perf tools: Fix compatibility with libelf 0.8 and autodetect
  perf events: Don't generate events for the idle task when exclude_idle is set
  perf events: Fix swevent hrtimer sampling by keeping track of remaining time when enabling/disabling swevent hrtimers

10 years agoMerge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 2 Nov 2009 17:45:44 +0000]
Merge branch 'tracing-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  tracing: Remove cpu arg from the rb_time_stamp() function
  tracing: Fix comment typo and documentation example
  tracing: Fix trace_seq_printf() return value
  tracing: Update *ppos instead of filp->f_pos

10 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 2 Nov 2009 17:45:17 +0000]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Make EFI RTC function depend on 32bit again
  x86-64: Fix register leak in 32-bit syscall audting
  x86: crash_dump: Fix non-pae kdump kernel memory accesses
  x86: Side-step lguest problem by only building cmpxchg8b_emu for pre-Pentium

10 years agomm: remove incorrect swap_count() from try_to_unuse()
Bo Liu [Mon, 2 Nov 2009 16:50:33 +0000]
mm: remove incorrect swap_count() from try_to_unuse()

In try_to_unuse(), swcount is a local copy of *swap_map, including the
SWAP_HAS_CACHE bit; but a wrong comparison against swap_count(*swap_map),
which masks off the SWAP_HAS_CACHE bit, succeeded where it should fail.

That had the effect of resetting the mm from which to start searching
for the next swap page, to an irrelevant mm instead of to an mm in which
this swap page had been found: which may increase search time by ~20%.
But we're used to swapoff being slow, so never noticed the slowdown.

Remove that one spurious use of swap_count(): Bo Liu thought it merely
redundant, Hugh rewrote the description since it was measurably wrong.

Signed-off-by: Bo Liu <bo-liu@hotmail.com>
Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agoi915: fix intel graphics suspend breakage due to resume/lid event confusion
Linus Torvalds [Mon, 2 Nov 2009 17:29:55 +0000]
i915: fix intel graphics suspend breakage due to resume/lid event confusion

In commit c1c7af60892070e4b82ad63bbfb95ae745056de0 ("drm/i915: force
mode set at lid open time") the intel graphics driver was taught to
restore the LVDS mode on lid open.

That caused problems with interaction with the suspend/resume code,
which commonly runs at the same time (suspend is often caused by the lid
close event, while lid open is commonly a resume event), which was
worked around with in commit 06891e27a9b5dba5268bb80e41a283f51335afe7
("drm/i915: fix suspend/resume breakage in lid notifier").

However, in the meantime the lid event code had also grown a user event
notifier (commit 06324194eee97a51b5f172270df49ec39192d6cc: "drm/i915:
generate a KMS uevent at lid open/close time"), and now _that_ causes
problems with suspend/resume and some versions of Xorg reacting to those
uevents by setting the mode.

So this effectively reverts that commit 06324194ee, and makes the lid
open protection logic against suspend/resume more explicit.  This fixes
at least one laptop. See


for more details.

Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Riccardo Magliocchetti <riccardo.magliocchetti@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agoRevert "[IA64] fix percpu warnings"
Tony Luck [Mon, 2 Nov 2009 17:23:08 +0000]
Revert "[IA64] fix percpu warnings"

This reverts commit b94b08081fcecf83fa690d6c5664f6316fe72208.

genksyms currently cannot handle complicated types for exported
percpu variables.  Drop this patch for now as it prevents a
module from being loaded on sn2 systems:

 xpc: no symbol version for per_cpu____sn_cnodeid_to_nasid
 xpc: Unknown symbol per_cpu____sn_cnodeid_to_nasid

Signed-off-by: Tony Luck <tony.luck@intel.com>

10 years agoARM: ensure initial page tables are setup for SMP systems
Russell King [Sun, 1 Nov 2009 17:44:24 +0000]
ARM: ensure initial page tables are setup for SMP systems

Mapping the same memory using two different attributes (memory
type, shareability, cacheability) is unpredictable.  During boot,
we encounter a situation when we're updating the kernel's page
tables which can lead to dirty cache lines existing in the cache
which are subsequently missed.  This causes stack corruption,
and therefore a crash.

Therefore, ensure that the shared and cacheability settings
matches the configuration that will be used later; this together
with the restriction in early_cachepolicy() ensures that we won't
create a mismatch during boot.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

10 years agoARM: 5776/1: Check compiler version and EABI support when adding ARM unwind support.
Claudio Scordino [Fri, 30 Oct 2009 11:06:05 +0000]
ARM: 5776/1: Check compiler version and EABI support when adding ARM unwind support.

ARM unwind is known to compile only with EABI and not-buggy compilers.
The problem is not the unwinding information but the -fno-frame-pointer
option added as a result of !CONFIG_FRAME_POINTER.  Now we check the
compiler and raise a #warning in case of wrong compiler.

Signed-off-by: Claudio Scordino <claudio@evidence.eu.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

10 years agoMerge branch 'fix/hda' into for-linus
Takashi Iwai [Mon, 2 Nov 2009 15:18:33 +0000]
Merge branch 'fix/hda' into for-linus

10 years agoMerge branch 'fix/asoc' into for-linus
Takashi Iwai [Mon, 2 Nov 2009 15:18:29 +0000]
Merge branch 'fix/asoc' into for-linus

10 years ago9p: fix readdir corner cases
Eric Van Hensbergen [Mon, 2 Nov 2009 14:39:28 +0000]
9p: fix readdir corner cases

The patch below also addresses a couple of other corner cases in readdir
seen with a large (e.g. 64k) msize.  I'm not sure what people think of
my co-opting of fid->aux here.  I'd be happy to rework if there's a better

When the size of the user supplied buffer passed to readdir is smaller
than the data returned in one go by the 9P read request, v9fs_dir_readdir()
currently discards extra data so that, on the next call, a 9P read
request will be issued with offset < previous offset + bytes returned,
which voilates the constraint described in paragraph 3 of read(5) description.
This patch preseves the leftover data in fid->aux for use in the next call.

Signed-off-by: Jim Garlick <garlick@llnl.gov>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

10 years ago9p: fix readlink
Martin Stava [Mon, 2 Nov 2009 14:39:34 +0000]
9p: fix readlink

I do not know if you've looked on the patch, but unfortunately it is
incorrect. A suggested better version is in this email (the old
version didn't work in case the user provided buffer was not long
enough - it incorrectly appended null byte on a position of last char,
and thus broke the contract of the readlink method). However, I'm
still not sure this is 100% correct thing to do, I think readlink is
supposed to return buffer without last null byte in all cases, but we
do return last null byte (even the old version).. on the other hand it
is likely unspecified what is in the remaining part of the buffer, so
null character may be fine there ;):

Signed-off-by: Martin Stava <martin.stava@gmail.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

10 years ago9p: fix a small bug in readdir for long directories
Martin Stava [Mon, 2 Nov 2009 14:39:35 +0000]
9p: fix a small bug in readdir for long directories

Here is a proposed patch for bug in readdir. Listing of dirs with
many files fails without this patch.

Signed-off-by: Martin Stava <martin.stava@gmail.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

10 years agoALSA: hda - Don't check invalid HP pin
Takashi Iwai [Mon, 2 Nov 2009 13:23:15 +0000]
ALSA: hda - Don't check invalid HP pin

alc_automute_pin() might be called even if any HP pin is defined, and
it will result in verbs with NID=0.

This patch adds a check for the validity of HP widget before issuing
any verbs.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

10 years agoALSA: dummy - Fix descriptions of pcm_substreams parameter
Takashi Iwai [Mon, 2 Nov 2009 13:10:59 +0000]
ALSA: dummy - Fix descriptions of pcm_substreams parameter

Now up to 128 substreams are supported.

Reported-by: Adrian Bridgett <adrian@smop.co.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

10 years agoMIPS: O32: Fix ppoll
Arnaud Patard [Tue, 20 Oct 2009 08:27:47 +0000]
MIPS: O32: Fix ppoll

sys_ppoll syscall needs to use a compat handler on 64bit kernels with o32

Signed-off-by: Arnaud Patard <apatard@mandriva.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: Oprofile: Rename cpu_type from godson2 to loongson2
Wu Zhangjin [Wed, 21 Oct 2009 14:51:46 +0000]
MIPS: Oprofile: Rename cpu_type from godson2 to loongson2

Unify the naming method between kernel and the user-space oprofile tool.
Because loongson is used instead of godson in most of the places, we agreed
to use loongson instead, which will simplify future maintenance.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Acked-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: Alchemy: Fix hang with high-frequency edge interrupts
Manuel Lauss [Wed, 14 Oct 2009 10:22:20 +0000]
MIPS: Alchemy: Fix hang with high-frequency edge interrupts

The handle_edge_irq() flowhandler disables edge int sources which occur
too fast (i.e. another edge comes in before the irq handler function
had a chance to finish).  Currently, the mask_ack() callback does not
ack the edges in hardware, leading to an endless loop in the flowhandler
where it tries to shut up the irq source.

When I rewrote the alchemy IRQ code  I wrongly assumed the mask_ack()
callback was only used by the level flowhandler, hence it omitted the
(at the time pointless) edge acks.  Turned out I was wrong; so here
is a complete mask_ack implementation for Alchemy IC, which fixes
the above mentioned problem.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: TXx9: Fix spi-baseclk value
Atsushi Nemoto [Thu, 3 Sep 2009 13:59:00 +0000]
MIPS: TXx9: Fix spi-baseclk value

TXx9 SPI bit rate is calculated by:
fBR = fSPI / 2 / (n + 1)
(fSPI is SPI master clock freq, i.e. imbusclk freq.)
So use imbus_clk / 2 as a spi-baseclk.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: bcm63xx: Set the correct BCM3302 CPU name
Florian Fainelli [Wed, 14 Oct 2009 07:56:00 +0000]
MIPS: bcm63xx: Set the correct BCM3302 CPU name

For consistency with other BCM63xx SoC set the CPU name to "Broadcom
BCM6338" when actually running on that system.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: Loongson 2: Set cpu_has_dc_aliases and cpu_icache_snoops_remote_store
Zhang Le [Fri, 19 Jun 2009 10:01:39 +0000]
MIPS: Loongson 2: Set cpu_has_dc_aliases and cpu_icache_snoops_remote_store

Loongson 2 does not have dcache aliases when is using 16k pages. and the

And because Loongson 2 doesn't do SMP , cpu_icache_snoops_remote_store does
not matter here.

Signed-off-by: Zhang Le <r0bertz@gentoo.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: Avoid potential hazard on Context register
Ralf Baechle [Tue, 13 Oct 2009 21:23:28 +0000]
MIPS: Avoid potential hazard on Context register

set_saved_sp reads Context register. Avoid reading stale value from
earlier incomplete write.

Issue found and fixed for head.S by Chris Dearman <chris@mips.com>.

Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: Octeon: Use lockless interrupt controller operations when possible.
David Daney [Tue, 13 Oct 2009 18:26:03 +0000]
MIPS: Octeon: Use lockless interrupt controller operations when possible.

Some newer Octeon chips have registers that allow lockless operation of
the interrupt controller.  Take advantage of them.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: Octeon: Use write_{un,}lock_irq{restore,save} to set irq affinity
David Daney [Tue, 13 Oct 2009 15:52:28 +0000]
MIPS: Octeon: Use write_{un,}lock_irq{restore,save} to set irq affinity

Since the locks are used from interrupt context we need the
irqsave/irqrestore versions of the locking functions.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: Set S-cache linesize to 64-bytes for MTI's S-cache
Ralf Baechle [Tue, 13 Oct 2009 14:54:01 +0000]
MIPS: Set S-cache linesize to 64-bytes for MTI's S-cache

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: SMTC: Avoid queing multiple reschedule IPIs
Jaidev Patwardhan [Fri, 10 Jul 2009 09:06:00 +0000]
MIPS: SMTC: Avoid queing multiple reschedule IPIs

Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: GCMP: Avoid accessing registers when they are not present
Jaidev Patwardhan [Fri, 10 Jul 2009 08:54:25 +0000]
MIPS: GCMP: Avoid accessing registers when they are not present

Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: GIC: Random fixes and enhancements.
Chris Dearman [Fri, 10 Jul 2009 08:54:09 +0000]
MIPS: GIC: Random fixes and enhancements.

Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: CMP: Fix memory barriers for correct operation of amon_cpu_start
Chris Dearman [Fri, 10 Jul 2009 09:06:38 +0000]
MIPS: CMP: Fix memory barriers for correct operation of amon_cpu_start

Signed-off-by: Chris Dearman (chris@mips.com)
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: Fix abs.[sd] and neg.[sd] emulation for NaN operands
Nigel Stephens [Mon, 12 Oct 2009 21:57:18 +0000]
MIPS: Fix abs.[sd] and neg.[sd] emulation for NaN operands

This patch ensures that the sign bit is always updated for NaN operands.

Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: SPRAM: Clean up support code a little
Chris Dearman [Fri, 10 Jul 2009 08:51:27 +0000]
MIPS: SPRAM: Clean up support code a little

Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: 1004K: Enable SPRAM support.
Ralf Baechle [Mon, 12 Oct 2009 21:20:20 +0000]
MIPS: 1004K: Enable SPRAM support.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: Malta: Enable PCI 2.1 compatibility in PIIX4
Ralf Baechle [Mon, 12 Oct 2009 20:54:47 +0000]
MIPS: Malta: Enable PCI 2.1 compatibility in PIIX4

Based on original patch by Chris Dearman <chris@mips.com>.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: Kconfig: Fix duplicate default value for MIPS_L1_CACHE_SHIFT.
Ralf Baechle [Mon, 12 Oct 2009 20:30:06 +0000]
MIPS: Kconfig: Fix duplicate default value for MIPS_L1_CACHE_SHIFT.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: MTI: Fix accesses to device registers on MIPS boards
Chris Dearman [Fri, 10 Jul 2009 08:53:54 +0000]
MIPS: MTI: Fix accesses to device registers on MIPS boards

This fixes the remaining problems introduced by
f197465384bf7ef1af184c2ed1a4e268911a91e3 (incorrect access length &
byteswapping in bigendian mode)

Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: Fix machine check exception in kmap_coherent()
Kevin Cernekee [Mon, 7 Sep 2009 18:11:31 +0000]
MIPS: Fix machine check exception in kmap_coherent()

On an SMP system with cache aliases, the following sequence of events may

1) copy_user_highpage() runs on CPU0, invoking kmap_coherent() to create a
   temporary mapping in the fixmap region
2) copy_page() starts on CPU0
3) CPU1 sends CPU0 an IPI asking CPU0 to run local_r4k_flush_cache_page()
4) CPU0 takes the interrupt, interrupting copy_page()
5) local_r4k_flush_cache_page() on CPU0 calls kmap_coherent() again
6) The second invocation of kmap_coherent() on CPU0 tries to use the
   same fixmap virtual address that was being used by copy_user_highpage()
7) CPU0 throws a machine check exception for the TLB address conflict

Fixed by creating an extra set of fixmap entries for use in interrupt
handlers.  This prevents fixmap VA conflicts between copy_user_highpage()
running in user context, and local_r4k_flush_cache_page() invoked from an

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: MTX-1: Fix build if CONFIG_PCI is disabled.
Ralf Baechle [Mon, 12 Oct 2009 00:23:48 +0000]
MIPS: MTX-1: Fix build if CONFIG_PCI is disabled.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: AR7: register watchdog device only if enabled in hw configuration
Florian Fainelli [Tue, 4 Aug 2009 21:09:36 +0000]
MIPS: AR7: register watchdog device only if enabled in hw configuration

This patch checks if the watchdog enable bit is set in the DCL register
meaning that the hardware watchdog actually works and if so, register the
ar7_wdt platform_device.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: BCM63xx: Prepare for watchdog support
Florian Fainelli [Mon, 10 Aug 2009 19:42:59 +0000]
MIPS: BCM63xx: Prepare for watchdog support

This patch prepares the board code to register a bcm63xx_wdt
platform_device that we are going to use in a subsequent patch.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: BCM63xx: Make bcm63xx_uart_register an initfunc
Florian Fainelli [Mon, 10 Aug 2009 19:42:54 +0000]
MIPS: BCM63xx: Make bcm63xx_uart_register an initfunc

This patch removes the calls to bcm63xx_uart_register in board_bcm963xx.c
and make bcm63xx_uart_register an initfunc.  Allows us to remove
bcm63xx_dev_uart.h which was there to make checkpatch.pl happy.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: AU1000: Fix build failure for db1x00 configured for Au1100 SoC
Florian Fainelli [Sun, 16 Aug 2009 22:28:24 +0000]
MIPS: AU1000: Fix build failure for db1x00 configured for Au1100 SoC

This patch fixes the following warning, which becomes an error due to
-Werror to be turned on:
CC arch/mips/alchemy/common/gpiolib-au1000.o
cc1: warnings being treated as errors
arch/mips/alchemy/common/gpiolib-au1000.c: In function 'au1100_gpio2_to_irq':
/home/florian/dev/kernel/linux-queue/arch/mips/include/asm/mach-au1x00/gpio-au1000.h:107: warning: control reaches end of non-void function

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

10 years agoMIPS: BCM63xx: Fix soft-reset lockup on BCM6345
Florian Fainelli [Mon, 31 Aug 2009 18:27:39 +0000]
MIPS: BCM63xx: Fix soft-reset lockup on BCM6345

This patch fixes a lockup on BCM6345 where setting the PLL soft reset bit
will also lock the other blocks including UART.  Instead of setting only
the PLL soft reset bit in the software reset register, set this bit but do
not touch the others.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>