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331544 commits

Author SHA1 Message Date
Peter Senna Tschudin
4a4bfdcd29 can: peak_pci: fix error return code
Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function.

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

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-10-04 19:24:39 +02:00
David Howells
f3dfd599af UAPI: Fix conditional header installation handling (notably kvm_para.h on m68k)
The m68k arch doesn't have a kvm_para.h (unlike most or maybe all other
arches), but there is one in asm-generic.  This means that:

	ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/kvm_para.h \
			  $(srctree)/include/asm-$(SRCARCH)/kvm_para.h \
			  $(INSTALL_HDR_PATH)/include/asm-*/kvm_para.h),)
	header-y += kvm_para.h
	endif

gets it wrong because it is invoked twice during the header installation - and
on the second occasion, asm-generic/kvm_para.h has been installed in usr/,
thus triggering a attempt to install asm-m68k/kvm_para.h which will fail.

There are three headers with this sort of conditional logic: a.out.h, kvm.h
and kvm_para.h.  For all three of them, change the logic to be something like:

	ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/kvm_para.h \
			  $(srctree)/arch/$(SRCARCH)/include/uapi/asm/kvm_para.h),)

which finds the header in only the two places it should be found, and doesn't
get incorrectly triggered by the installation of asm-generic's version.

Signed-off-by: David Howells <dhowells@redhat.com>
2012-10-04 18:16:47 +01:00
Michal Simek
94fda49a94 Revert "microblaze_mmu_v2: Update signal returning address"
This reverts commit 8b28626a6b.

Offset -8 is wrong because when it is applied then one instruction
before brki r14, 8 is called again when we return.
Offset -4 is correct and brki instruction is called again.

This change came from ancient MMU kernel.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-10-04 18:56:39 +02:00
David Howells
b2249fbd7c Merge remote-tracking branch 'c6x/for-linux-next' into uapi-prep
Avoid later problems with c6x's asm/signal.h lacking __KERNEL__ guards.

Signed-off-by: David Howells <dhowells@redhat.com>
2012-10-04 17:37:01 +01:00
Linus Torvalds
ecefbd94b8 KVM updates for the 3.7 merge window
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Merge tag 'kvm-3.7-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Avi Kivity:
 "Highlights of the changes for this release include support for vfio
  level triggered interrupts, improved big real mode support on older
  Intels, a streamlines guest page table walker, guest APIC speedups,
  PIO optimizations, better overcommit handling, and read-only memory."

* tag 'kvm-3.7-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (138 commits)
  KVM: s390: Fix vcpu_load handling in interrupt code
  KVM: x86: Fix guest debug across vcpu INIT reset
  KVM: Add resampling irqfds for level triggered interrupts
  KVM: optimize apic interrupt delivery
  KVM: MMU: Eliminate pointless temporary 'ac'
  KVM: MMU: Avoid access/dirty update loop if all is well
  KVM: MMU: Eliminate eperm temporary
  KVM: MMU: Optimize is_last_gpte()
  KVM: MMU: Simplify walk_addr_generic() loop
  KVM: MMU: Optimize pte permission checks
  KVM: MMU: Update accessed and dirty bits after guest pagetable walk
  KVM: MMU: Move gpte_access() out of paging_tmpl.h
  KVM: MMU: Optimize gpte_access() slightly
  KVM: MMU: Push clean gpte write protection out of gpte_access()
  KVM: clarify kvmclock documentation
  KVM: make processes waiting on vcpu mutex killable
  KVM: SVM: Make use of asm.h
  KVM: VMX: Make use of asm.h
  KVM: VMX: Make lto-friendly
  KVM: x86: lapic: Clean up find_highest_vector() and count_vectors()
  ...

Conflicts:
	arch/s390/include/asm/processor.h
	arch/x86/kvm/i8259.c
2012-10-04 09:30:33 -07:00
Mark Salter
2e919f76e3 c6x: remove c6x signal.h
The c6x signal.h includes the asm-generic version and provides
a couple of extern declarations. David Howells pointed out that
the externs needed to be protected by ifdef __KERNEL__. As it
turns out, the externs aren't really needed since the functions
are only called from asm code. So this patch gets rid of the
c6x signal.h and uses just the asm-generic version.

Signed-off-by: Mark Salter <msalter@redhat.com>
2012-10-04 12:22:08 -04:00
Linus Torvalds
ce57e981f2 firmware: use 'kernel_read()' to read firmware into kernel buffer
Fengguang correctly points out that the firmware reading should not use
vfs_read(), since the buffer is in kernel space.

The vfs_read() just happened to work for kernel threads, but sparse
warns about the incorrect address spaces, and it's definitely incorrect
and could fail for other users of the firmware loading.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-04 09:19:02 -07:00
Linus Torvalds
e1cc485262 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull ext3 & udf fixes from Jan Kara:
 "Shortlog pretty much says it all.

  The interesting bits are UDF support for direct IO and ext3 fix for a
  long standing oops in data=journal mode."

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  jbd: Fix assertion failure in commit code due to lacking transaction credits
  UDF: Add support for O_DIRECT
  ext3: Replace 0 with NULL for pointer in super.c file
  udf: add writepages support for udf
  ext3: don't clear orphan list on ro mount with errors
  reiserfs: Make reiserfs_xattr_handlers static
2012-10-04 09:14:01 -07:00
Linus Torvalds
4d6d367232 - Remoteproc Recovery - by Fernando Guzman Lugo - when a remote processor
crash is detected, this mechanism will remove all virtio children
   devices, wait until their drivers let go, hard reset the remote
   processor and reload the firmware (resulting in the relevant virtio
   children devices re-added). Essentially the entire software stack
   is reset, together with the relevant hardware, so users don't have
   to reset the entire phone.
 - STE Modem driver is added - by Sjur Brændeland
 - OMAP DSP boot address support is added - by Juan Gutierrez
 - A handful of fixes/cleanups - Sjur Brændeland, Dan Carpenter, Emil Goode
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Merge tag 'remoteproc-for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc

Pull remoteproc update from Ohad Ben-Cohen:

 - Remoteproc Recovery - by Fernando Guzman Lugo

   When a remote processor crash is detected, this mechanism will remove
   all virtio children devices, wait until their drivers let go, hard
   reset the remote processor and reload the firmware (resulting in the
   relevant virtio children devices re-added).  Essentially the entire
   software stack is reset, together with the relevant hardware, so
   users don't have to reset the entire phone.

 - STE Modem driver is added - by Sjur Brændeland

 - OMAP DSP boot address support is added - by Juan Gutierrez

 - A handful of fixes/cleanups - Sjur Brændeland, Dan Carpenter, Emil
   Goode

* tag 'remoteproc-for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc:
  remoteproc: Fix use of format specifyer
  remoteproc: fix a potential NULL-dereference on cleanup
  remoteproc: select VIRTIO to avoid build breakage
  remoteproc: return -EFAULT on copy_from_user failure
  remoteproc: snprintf() can return more than was printed
  remoteproc: Add STE modem driver
  remtoteproc: maintain max notifyid
  remoteproc: create a 'recovery' debugfs entry
  remoteproc: add actual recovery implementation
  remoteproc: add rproc_report_crash function to notify rproc crashes
  remoteproc: Add dependency to HAS_DMA
  remoteproc/omap: set bootaddr support
2012-10-04 09:11:57 -07:00
Linus Torvalds
d66e6737d4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto update from Herbert Xu:
 - Optimised AES/SHA1 for ARM.
 - IPsec ESN support in talitos and caam.
 - x86_64/avx implementation of cast5/cast6.
 - Add/use multi-algorithm registration helpers where possible.
 - Added IBM Power7+ in-Nest support.
 - Misc fixes.

Fix up trivial conflicts in crypto/Kconfig due to the sparc64 crypto
config options being added next to the new ARM ones.

[ Side note: cut-and-paste duplicate help texts make those conflicts
  harder to read than necessary, thanks to git being smart about
  minimizing conflicts and maximizing the common parts... ]

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (71 commits)
  crypto: x86/glue_helper - fix storing of new IV in CBC encryption
  crypto: cast5/avx - fix storing of new IV in CBC encryption
  crypto: tcrypt - add missing tests for camellia and ghash
  crypto: testmgr - make test_aead also test 'dst != src' code paths
  crypto: testmgr - make test_skcipher also test 'dst != src' code paths
  crypto: testmgr - add test vectors for CTR mode IV increasement
  crypto: testmgr - add test vectors for partial ctr(cast5) and ctr(cast6)
  crypto: testmgr - allow non-multi page and multi page skcipher tests from same test template
  crypto: caam - increase TRNG clocks per sample
  crypto, tcrypt: remove local_bh_disable/enable() around local_irq_disable/enable()
  crypto: tegra-aes - fix error return code
  crypto: crypto4xx - fix error return code
  crypto: hifn_795x - fix error return code
  crypto: ux500 - fix error return code
  crypto: caam - fix error IDs for SEC v5.x RNG4
  hwrng: mxc-rnga - Access data via structure
  hwrng: mxc-rnga - Adapt clocks to new i.mx clock framework
  crypto: caam - add IPsec ESN support
  crypto: 842 - remove .cra_list initialization
  Revert "[CRYPTO] cast6: inline bloat--"
  ...
2012-10-04 09:06:34 -07:00
Arnd Bergmann
9e0e4e1162 ARM: at91: unused variable in at91_pm_verify_clocks
The code using the variable 'i' in this function is conditional which
results in a harmless compiler warning. Using the IS_ENABLED macro
instead of #ifdef makes the code look nicer and gets rid of the
warning.

Without this patch, building at91sam9263_defconfig results in:

/home/arnd/linux-arm/arch/arm/mach-at91/pm.c: In function 'at91_pm_verify_clocks':
/home/arnd/linux-arm/arch/arm/mach-at91/pm.c:137:6: warning: unused variable 'i' [-Wunused-variable]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-10-04 16:59:51 +02:00
John Linn
c74c8b1dcb microblaze: Added more support for PCI
In order to use an off the shelf nic, like the intel pro card,
changes are needed to support pci dma interfaces and other
small changes.

Signed-off-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-10-04 15:19:33 +02:00
Michal Simek
aaa5241ebb microblaze: Prefer to use pr_XXX instead of printk(KERN_XX)
Fix reset.c, timer.c, setup.c file.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-10-04 15:00:32 +02:00
Michal Simek
fcc1c0ff25 microblaze: Fix bug with passing command line
When u-boot passes control over to Linux it places the Linux command
line between to the end of __init_end. When space between
__init_end and __bss_start is not COMMAND_LINE_SIZE then
the part of cmdline can be lost.
In extreme case if __init_end == __bss_start u-boot can't pass
any cmdline to Linux kernel.

This patch fix this issue by copying cmd line directly to
cmd_line char array which is placed in data section.

Reported-by: David Mc Andrew <david.mcandrew@xilinx.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-10-04 14:59:19 +02:00
Michal Simek
c7e9a211e2 microblaze: Remove PAGE properties duplication
HWEXEC and HWWRITE is define above. Remove them.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-10-04 14:52:55 +02:00
Michal Simek
1f26076084 microblaze: Remove additional andi which has been already done
Remove one additional step.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-10-04 14:52:54 +02:00
Michal Simek
91836710c7 microblaze: Use predefined macro for ESR_DIZ
Just use macro instead of hardcoded value.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-10-04 14:52:53 +02:00
Michal Simek
6e80cff543 microblaze: Support 4k/16k/64k pages
Add support for page size which is supported by MMU.
Remove 8k and 32k page size because they are not supported
by MMU.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-10-04 14:52:49 +02:00
Michal Simek
9f78d3b5ab microblaze: Do not used hardcoded value in exception handler
Use predefined macros to support more page sizes.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-10-04 14:47:01 +02:00
Michal Simek
88d23b4462 microblaze: Added fdt chosen capability for timer
This lets a dts author flag a particular timer in the system as the system timer.
If the chosen node contains a "system-timer=<&foo>" entry than that handle will
be used to determine the system timer. In no such entry exists then the first
found timer will be used (current behaviour).

Signed-off-by: Peter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-10-04 14:29:15 +02:00
Michal Simek
9998517a27 microblaze: Add support for ioreadXX/iowriteXX_rep
Reuse versions from asm-generic functions.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-10-04 14:23:47 +02:00
Stephan Linz
191d5eca24 microblaze: Improve failure handling for GPIO reset
Early exit from of_platform_reset_gpio_probe() if there
was no GPIO reset line configured.

Avoid kernel oops in gpio_system_reset():

[   27.413294] Restarting system.
[   27.415674] Machine restart...
[   27.418787] Oops: kernel access of bad area, sig: 11
[   27.423252]  Registers dump: mode=83871D1C
[   27.427428]  r1=00000000, r2=00000000, r3=FFFFFEF8, r4=00000000
[   27.433310]  r5=C026AED0, r6=00000001, r7=00000068, r8=00000000
[   27.439189]  r9=C3871DAC, r10=000011A5, r11=00000000, r12=0000000A
[   27.445318]  r13=00000000, r14=0000000F, r15=C00029BC, r16=00000000
[   27.451558]  r17=C011DE8C, r18=80000115, r19=0000000F, r20=48184ED8
[   27.457770]  r21=00000000, r22=FFFFFFEA, r23=00000001, r24=FEE1DEAD
[   27.463982]  r25=00000054, r26=1000B1C8, r27=00000000, r28=00000000
[   27.470208]  r29=00000000, r30=00000000, r31=C32D30C0, rPC=C011DE8C
[   27.476433]  msr=000042A2, ear=0000004B, esr=00000872, fsr=342E3732

And remove useless dump_stack from machine_restart.

Signed-off-by: Stephan Linz <linz@li-pro.net>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-10-04 14:23:42 +02:00
Paul Bolle
3676d24a8e microblaze: clinkage.h
Nothing includes <asm/clinkage.h>. It has actually never been included
since it was added to the tree in commit
9981cd94d5 ("microblaze_v8: clinkage.h
linkage.h sections.h kmap_types.h"). That's not surprising, since
including it is indistinguishable from including <linux/linkage.h>. It
can safely be removed.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
2012-10-04 14:11:07 +02:00
David Howells
1c1e436269 UAPI: Split compound conditionals containing __KERNEL__ in Arm64
Split compound conditionals containing __KERNEL__ in Arm64 where possible to
make it easier for the UAPI disintegration scripts to handle them.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
2012-10-04 12:10:18 +01:00
David Howells
890139529d UAPI: Fix the guards on various asm/unistd.h files
asm-generic/unistd.h and a number of asm/unistd.h files have been given
reinclusion guards that allow the guard to be overridden if __SYSCALL is
defined.  Unfortunately, these files define __SYSCALL and don't undefine it
when they've finished with it, thus rendering the guard ineffective.

The reason for this override is to allow the file to be #included multiple
times with different settings on __SYSCALL for purposes like generating syscall
tables.

The following guards are problematic:

arch/arm64/include/asm/unistd.h:#if !defined(__ASM_UNISTD_H) || defined(__SYSCALL)
arch/arm64/include/asm/unistd32.h:#if !defined(__ASM_UNISTD32_H) || defined(__SYSCALL)
arch/c6x/include/asm/unistd.h:#if !defined(_ASM_C6X_UNISTD_H) || defined(__SYSCALL)
arch/hexagon/include/asm/unistd.h:#if !defined(_ASM_HEXAGON_UNISTD_H) || defined(__SYSCALL)
arch/openrisc/include/asm/unistd.h:#if !defined(__ASM_OPENRISC_UNISTD_H) || defined(__SYSCALL)
arch/score/include/asm/unistd.h:#if !defined(_ASM_SCORE_UNISTD_H) || defined(__SYSCALL)
arch/tile/include/asm/unistd.h:#if !defined(_ASM_TILE_UNISTD_H) || defined(__SYSCALL)
arch/unicore32/include/asm/unistd.h:#if !defined(__UNICORE_UNISTD_H__) || defined(__SYSCALL)
include/asm-generic/unistd.h:#if !defined(_ASM_GENERIC_UNISTD_H) || defined(__SYSCALL)

On the assumption that the guards' ineffectiveness has passed unnoticed, just
remove these guards entirely.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
2012-10-04 12:10:18 +01:00
Jussi Kivilinna
c9f97a27ce crypto: x86/glue_helper - fix storing of new IV in CBC encryption
Glue_helper incorrectly XORs new IV over old IV at end of CBC encryption
function when it should store. This causes CBC encryption to give
incorrect output on multi-page encryption requests.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2012-10-04 17:45:29 +08:00
Arnd Bergmann
ac09281a02 ARM: at91: skip at91_io_desc definition for NOMMU
On NOMMU systems, we do cannot remap the MMIO space, so the
definition of at91_io_desc is unused.

Without this patch, building at91x40_defconfig results in:

arch/arm/mach-at91/setup.c:90:24: warning: 'at91_io_desc' defined but not used [-Wunused-variable]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
2012-10-04 10:21:29 +02:00
Arnd Bergmann
e0347c5238 ARM: pxa: work around duplicate definition of GPIO24_SSP1_SFRM
The symbol "GPIO24_SSP1_SFRM" is defined in both mfp-pxa27x.h and
mfp-pxa25x.h. Since the macro is not actually used in the cm-x2xx.c
file, but it includes both headers, a safe workaround should be
to just undefine it from the .c file. This is a bit hacky and
the headers should be fixed to not both define it, but for now
it gets us around an annoying warning.

Without this patch, building cm_x2xx_defconfig results in:

In file included from arch/arm/mach-pxa/include/mach-pxa/pxa27x.h:7:0,
                 from arch/arm/mach-pxa/cm-x2xx.c:25:
arch/arm/mach-pxa/include/mach-pxa/mfp-pxa27x.h:215:0: warning: "GPIO24_SSP1_SFRM" redefined [enabled by default]
arch/arm/mach-pxa/include/mach-pxa/mfp-pxa25x.h:111:0: note: this is the location of the previous definition

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Mike Rapoport <mike@compulab.co.il>
2012-10-04 10:20:23 +02:00
Arnd Bergmann
066258f429 ARM: pxa: remove sharpsl_fatal_check function
The sharpsl_fatal_check has not been used since Pavel Machek removed
the caller in 99f329a2b "pxa/sharpsl_pm: zaurus c3000 aka spitz: fix
resume". Nobody has complained since 2009, so it's safe to assume we
can just remove the function.

Without this patch, building corgi_defconfig results in:

/home/arnd/linux-arm/arch/arm/mach-pxa/sharpsl_pm.c:693:12: warning: 'sharpsl_fatal_check' defined but not used [-Wunused-function]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Stanislav Brabec <utx@penguin.cz>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-10-04 10:20:22 +02:00
Arnd Bergmann
30bda0ebef ARM: pxa: define palmte2_pxa_keys conditionally
Gcc prints a harmless warning about palmte2_pxa_keys not being used
when the gpio keyboard driver is disabled. The solution is to use
the same #ifdef that is already present in the place where the
symbol is used.

Without this patch, building palmz72_defconfig results in:

/home/arnd/linux-arm/arch/arm/mach-pxa/palmte2.c:128:31: warning: 'palmte2_pxa_keys' defined but not used [-Wunused-variable]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Carlos Eduardo Medaglia Dyonisio <cadu@nerdfeliz.com>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
2012-10-04 10:20:05 +02:00
Arnd Bergmann
5f0cc6d16c ARM: pxa: Wunused-result warning in viper board file
Calling kstrtoul requires checking the result. In case of
the viper_tpm_setup function, let's fail the __setup function
if the number was invalid.

Without this patch, building viper_defconfig results in:

arch/arm/mach-pxa/viper.c: In function 'viper_tpm_setup':
arch/arm/mach-pxa/viper.c:771:10: warning: ignoring return value of 'kstrtoul', declared with attribute warn_unused_result [-Wunused-result]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Marc Zyngier <maz@misterjones.org>
Cc: Haojian Zhuang <haojian.zhuang@marvell.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
2012-10-04 10:19:51 +02:00
Arnd Bergmann
9c7f4f5ce6 ARM: shark: fix shark_pci_init return code
When run on the wrong platform, the shark_pci_init function
returns an undefined value, as reported by a gcc warning,
so let's just return -ENODEV.

Without this patch, building shark_defconfig results in:

arch/arm/mach-shark/pci.c: In function 'shark_pci_init':
arch/arm/mach-shark/pci.c:42:3: warning: 'return' with no value, in function returning non-void [-Wreturn-type]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: "Krzysztof Halasa" <khc@pm.waw.pl>
2012-10-04 10:19:51 +02:00
Anton Blanchard
d900bd7366 powerpc/iommu: Fix multiple issues with IOMMU pools code
There are a number of issues in the recent IOMMU pools code:

- On a preempt kernel we might switch CPUs in the middle of building
  a scatter gather list. When this happens the handle hint passed in
  no longer falls within the local CPU's pool. Check for this and
  fall back to the pool hint.

- We were missing a spin_unlock/spin_lock in one spot where we
  switch pools.

- We need to provide locking around dart_tlb_invalidate_all and
  dart_tlb_invalidate_one now that the global lock is gone.

Reported-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@kernel.org> [v3.6]
2012-10-04 18:03:20 +10:00
Nishanth Aravamudan
c8adfeccee powerpc: Fix VMX fix for memcpy case
In 2fae7cdb60 ("powerpc: Fix VMX in
interrupt check in POWER7 copy loops"), Anton inadvertently
introduced a regression for memcpy on POWER7 machines. copyuser and
memcpy diverge slightly in their use of cr1 (copyuser doesn't use it,
but memcpy does) and you end up clobbering that register with your fix.
That results in (taken from an FC18 kernel):

[   18.824604] Unrecoverable VMX/Altivec Unavailable Exception f20 at c000000000052f40
[   18.824618] Oops: Unrecoverable VMX/Altivec Unavailable Exception, sig: 6 [#1]
[   18.824623] SMP NR_CPUS=1024 NUMA pSeries
[   18.824633] Modules linked in: tg3(+) be2net(+) cxgb4(+) ipr(+) sunrpc xts lrw gf128mul dm_crypt dm_round_robin dm_multipath linear raid10 raid456 async_raid6_recov async_memcpy async_pq raid6_pq async_xor xor async_tx raid1 raid0 scsi_dh_rdac scsi_dh_hp_sw scsi_dh_emc scsi_dh_alua squashfs cramfs
[   18.824705] NIP: c000000000052f40 LR: c00000000020b874 CTR: 0000000000000512
[   18.824709] REGS: c000001f1fef7790 TRAP: 0f20   Not tainted  (3.6.0-0.rc6.git0.2.fc18.ppc64)
[   18.824713] MSR: 8000000000009032 <SF,EE,ME,IR,DR,RI>  CR: 4802802e  XER: 20000010
[   18.824726] SOFTE: 0
[   18.824728] CFAR: 0000000000000f20
[   18.824731] TASK = c000000fa7128400[0] 'swapper/24' THREAD: c000000fa7480000 CPU: 24
GPR00: 00000000ffffffc0 c000001f1fef7a10 c00000000164edc0 c000000f9b9a8120
GPR04: c000000f9b9a8124 0000000000001438 0000000000000060 03ffffff064657ee
GPR08: 0000000080000000 0000000000000010 0000000000000020 0000000000000030
GPR12: 0000000028028022 c00000000ff25400 0000000000000001 0000000000000000
GPR16: 0000000000000000 7fffffffffffffff c0000000016b2180 c00000000156a500
GPR20: c000000f968c7a90 c0000000131c31d8 c000001f1fef4000 c000000001561d00
GPR24: 000000000000000a 0000000000000000 0000000000000001 0000000000000012
GPR28: c000000fa5c04f80 00000000000008bc c0000000015c0a28 000000000000022e
[   18.824792] NIP [c000000000052f40] .memcpy_power7+0x5a0/0x7c4
[   18.824797] LR [c00000000020b874] .pcpu_free_area+0x174/0x2d0
[   18.824800] Call Trace:
[   18.824803] [c000001f1fef7a10] [c000000000052c14] .memcpy_power7+0x274/0x7c4 (unreliable)
[   18.824809] [c000001f1fef7b10] [c00000000020b874] .pcpu_free_area+0x174/0x2d0
[   18.824813] [c000001f1fef7bb0] [c00000000020ba88] .free_percpu+0xb8/0x1b0
[   18.824819] [c000001f1fef7c50] [c00000000043d144] .throtl_pd_exit+0x94/0xd0
[   18.824824] [c000001f1fef7cf0] [c00000000043acf8] .blkg_free+0x88/0xe0
[   18.824829] [c000001f1fef7d90] [c00000000018c048] .rcu_process_callbacks+0x2e8/0x8a0
[   18.824835] [c000001f1fef7e90] [c0000000000a8ce8] .__do_softirq+0x158/0x4d0
[   18.824840] [c000001f1fef7f90] [c000000000025ecc] .call_do_softirq+0x14/0x24
[   18.824845] [c000000fa7483650] [c000000000010e80] .do_softirq+0x160/0x1a0
[   18.824850] [c000000fa74836f0] [c0000000000a94a4] .irq_exit+0xf4/0x120
[   18.824854] [c000000fa7483780] [c000000000020c44] .timer_interrupt+0x154/0x4d0
[   18.824859] [c000000fa7483830] [c000000000003be0] decrementer_common+0x160/0x180
[   18.824866] --- Exception: 901 at .plpar_hcall_norets+0x84/0xd4
[   18.824866]     LR = .check_and_cede_processor+0x48/0x80
[   18.824871] [c000000fa7483b20] [c00000000007f018] .check_and_cede_processor+0x18/0x80 (unreliable)
[   18.824877] [c000000fa7483b90] [c00000000007f104] .dedicated_cede_loop+0x84/0x150
[   18.824883] [c000000fa7483c50] [c0000000006bc030] .cpuidle_enter+0x30/0x50
[   18.824887] [c000000fa7483cc0] [c0000000006bc9f4] .cpuidle_idle_call+0x104/0x720
[   18.824892] [c000000fa7483d80] [c000000000070af8] .pSeries_idle+0x18/0x40
[   18.824897] [c000000fa7483df0] [c000000000019084] .cpu_idle+0x1a4/0x380
[   18.824902] [c000000fa7483ec0] [c0000000008a4c18] .start_secondary+0x520/0x528
[   18.824907] [c000000fa7483f90] [c0000000000093f0] .start_secondary_prolog+0x10/0x14
[   18.824911] Instruction dump:
[   18.824914] 38840008 90030000 90e30004 38630008 7ca62850 7cc300d0 78c7e102 7cf01120
[   18.824923] 78c60660 39200010 39400020 39600030 <7e00200c> 7c0020ce 38840010 409f001c
[   18.824935] ---[ end trace 0bb95124affaaa45 ]---
[   18.825046] Unrecoverable VMX/Altivec Unavailable Exception f20 at c000000000052d08

I believe the right fix is to make memcpy match usercopy and not use
cr1.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@kernel.org> [v3.6]
2012-10-04 18:02:43 +10:00
Linus Torvalds
612a9aab56 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm merge (part 1) from Dave Airlie:
 "So first of all my tree and uapi stuff has a conflict mess, its my
  fault as the nouveau stuff didn't hit -next as were trying to rebase
  regressions out of it before we merged.

  Highlights:
   - SH mobile modesetting driver and associated helpers
   - some DRM core documentation
   - i915 modesetting rework, haswell hdmi, haswell and vlv fixes, write
     combined pte writing, ilk rc6 support,
   - nouveau: major driver rework into a hw core driver, makes features
     like SLI a lot saner to implement,
   - psb: add eDP/DP support for Cedarview
   - radeon: 2 layer page tables, async VM pte updates, better PLL
     selection for > 2 screens, better ACPI interactions

  The rest is general grab bag of fixes.

  So why part 1? well I have the exynos pull req which came in a bit
  late but was waiting for me to do something they shouldn't have and it
  looks fairly safe, and David Howells has some more header cleanups
  he'd like me to pull, that seem like a good idea, but I'd like to get
  this merge out of the way so -next dosen't get blocked."

Tons of conflicts mostly due to silly include line changes, but mostly
mindless.  A few other small semantic conflicts too, noted from Dave's
pre-merged branch.

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (447 commits)
  drm/nv98/crypt: fix fuc build with latest envyas
  drm/nouveau/devinit: fixup various issues with subdev ctor/init ordering
  drm/nv41/vm: fix and enable use of "real" pciegart
  drm/nv44/vm: fix and enable use of "real" pciegart
  drm/nv04/dmaobj: fixup vm target handling in preparation for nv4x pcie
  drm/nouveau: store supported dma mask in vmmgr
  drm/nvc0/ibus: initial implementation of subdev
  drm/nouveau/therm: add support for fan-control modes
  drm/nouveau/hwmon: rename pwm0* to pmw1* to follow hwmon's rules
  drm/nouveau/therm: calculate the pwm divisor on nv50+
  drm/nouveau/fan: rewrite the fan tachometer driver to get more precision, faster
  drm/nouveau/therm: move thermal-related functions to the therm subdev
  drm/nouveau/bios: parse the pwm divisor from the perf table
  drm/nouveau/therm: use the EXTDEV table to detect i2c monitoring devices
  drm/nouveau/therm: rework thermal table parsing
  drm/nouveau/gpio: expose the PWM/TOGGLE parameter found in the gpio vbios table
  drm/nouveau: fix pm initialization order
  drm/nouveau/bios: check that fixed tvdac gpio data is valid before using it
  drm/nouveau: log channel debug/error messages from client object rather than drm client
  drm/nouveau: have drm debugging macros build on top of core macros
  ...
2012-10-03 23:29:23 -07:00
Alex Tabachnik
5a33a66949 IB/iser: Add more RX CQs to scale out processing of SCSI responses
RX/TX CQs will now be selected from a per HCA pool.  For the RX flow
this has the effect of using different interrupt vectors when using
low level drivers (such as mlx4) that map the "vector" param provided
by the ULP on CQ creation to a dedicated IRQ/MSI-X vector.  This
allows the RX flow processing of IO responses to be distributed across
multiple CPUs.

QPs (--> iSER sessions) are assigned to CQs in round robin order using
the CQ with the minimum number of sessions attached to it.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Alex Tabachnik <alext@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-10-03 21:26:49 -07:00
Rusty Russell
ca16f580a5 lguest: fix occasional crash in example launcher.
We usually got away with ->next on the final entry being NULL, but it
finally bit me.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: stable@kernel.org
2012-10-04 12:12:59 +09:30
David S. Miller
c0b8b99287 cxgb4: Fix build error due to missing linux/vmalloc.h include.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-10-03 20:50:08 -04:00
Linus Torvalds
3a494318b1 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull user namespace compile fix from Eric W Biederman:
 "This tree contains a trivial build fix for one of the staging drivers
  when user namespace support is enabled"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  userns: Fix build of drivers/staging/dgrp
2012-10-03 16:09:09 -07:00
Linus Torvalds
abb139e75c firmware: teach the kernel to load firmware files directly from the filesystem
This is a first step in allowing people to by-pass udev for loading
device firmware.  Current versions of udev will deadlock (causing us to
block for the 30 second timeout) under some circumstances if the
firmware is loaded as part of the module initialization path, and this
is causing problems for media drivers in particular.

The current patch hardcodes the firmware path that udev uses by default,
and will fall back to the legacy udev mode if the firmware cannot be
found there.  We'd like to add support for both configuring the paths
and the fallback behaviour, but in the meantime this hopefully fixes the
immediate problem, while also giving us a way forward.

[ v2: Some VFS layer interface cleanups suggested by Al Viro ]
[ v3: use the default udev paths suggested by Kay Sievers ]

Suggested-by: Ivan Kalvachev <ikalvachev@gmail.com>
Acked-by: Greg KH <gregkh@linuxfoundation.org>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Kay Sievers <kay@redhat.com>
Cc: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-03 15:58:32 -07:00
Mark Salter
37d11ab8b4 c6x: make dsk6455 the default config
C6X had no defconfig, so DSK6455 is as good as any.

Signed-off-by: Mark Salter <msalter@redhat.com>
2012-10-03 17:39:12 -04:00
Tatyana Nikolova
cf9fd75cbc RDMA/nes: Bump the version number of nes driver
Bumpthe version of the nes driver to reflect recent fixes.

Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-10-03 14:27:59 -07:00
Tatyana Nikolova
a378e3a3fb RDMA/nes: Remove unused module parameter "send_first"
Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-10-03 14:27:59 -07:00
Tatyana Nikolova
a67b078cf6 RDMA/nes: Remove unnecessary if-else statement
Remove unnecessary if-else statement -- we do the same thing either way.

Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-10-03 14:27:58 -07:00
Tatyana Nikolova
d5fb476a10 RDMA/nes: Add missing break to switch.
Static code analyzer cppcheck points out a missing break.

Reported-by: David Binderman <dcb314@hotmail.com>
Addresses: <https://bugzilla.kernel.org/show_bug.cgi?id=47671>
Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-10-03 14:27:58 -07:00
Jack Morgenstein
60396683fe mlx4_core: Adjust flow steering attach wrapper so that IB works on SR-IOV VFs
Currently, the InfiniBand stack does not support flow steering at the
verbs level -- the only usage of flow steering in the IB driver is for
L2 multicast attaches.  We need to add the IB case to procedure
mlx4_QP_FLOW_STEERING_ATTACH_wrapper() to allow IPoIB to work on VFs
on ConnectX-3 when flow steering is enabled.

Currently, the IB case in mlx4_QP_FLOW_STEERING_ATTACH_wrapper() is missing,
so the procedure returns -EINVAL and IPoIB on VFs breaks.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-10-03 14:11:20 -07:00
Linus Torvalds
df5a2a1fbc - feed GUIDs of FireWire nodes to the random pool
- more complete quirk handling of a TI S400B phy
   - avoid holding a core lock while calling into highlevel drivers
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Merge tag 'firewire-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394

Pull firewire updates from Stefan Richter:
  - feed GUIDs of FireWire nodes to the random pool
  - more complete quirk handling of a TI S400B phy
  - avoid holding a core lock while calling into highlevel drivers

* tag 'firewire-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
  firewire: addendum to address handler RCU conversion
  firewire: remove global lock around address handlers, convert to RCU
  firewire: ohci: get IR bit from TSB41BA3D phy
  firewire: core: feed /dev/random with devices' GUIDs
2012-10-03 13:55:12 -07:00
Linus Torvalds
9b2e077c42 Prepared for main script
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Merge tag 'uapi-prep-20121002' of git://git.infradead.org/users/dhowells/linux-headers

Pull preparatory patches for user API disintegration from David Howells:
 "The patches herein prepare for the extraction of the Userspace API
  bits from the various header files named in the Kbuild files.

  New subdirectories are created under either include/uapi/ or
  arch/x/include/uapi/ that correspond to the subdirectory containing
  that file under include/ or arch/x/include/.

  The new subdirs under the uapi/ directory are populated with Kbuild
  files that mostly do nothing at this time.  Further patches will
  disintegrate the headers in each original directory and fill in the
  Kbuild files as they do it.

  These patches also:

   (1) fix up #inclusions of "foo.h" rather than <foo.h>.

   (2) Remove some redundant #includes from the DRM code.

   (3) Make the kernel build infrastructure handle Kbuild files both in
       the old places and the new UAPI place that both specify headers
       to be exported.

   (4) Fix some kernel tools that #include kernel headers during their
       build.

  I have compile tested this with allyesconfig against x86_64,
  allmodconfig against i386 and a scattering of additional defconfigs of
  other arches.  Prepared for main script

  Signed-off-by: David Howells <dhowells@redhat.com>
  Acked-by: Arnd Bergmann <arnd@arndb.de>
  Acked-by: Thomas Gleixner <tglx@linutronix.de>
  Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
  Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
  Acked-by: Dave Jones <davej@redhat.com>
  Acked-by: H. Peter Anvin <hpa@zytor.com>"

* tag 'uapi-prep-20121002' of git://git.infradead.org/users/dhowells/linux-headers:
  UAPI: Plumb the UAPI Kbuilds into the user header installation and checking
  UAPI: x86: Differentiate the generated UAPI and internal headers
  UAPI: Remove the objhdr-y export list
  UAPI: Move linux/version.h
  UAPI: Set up uapi/asm/Kbuild.asm
  UAPI: x86: Fix insn_sanity build failure after UAPI split
  UAPI: x86: Fix the test_get_len tool
  UAPI: (Scripted) Set up UAPI Kbuild files
  UAPI: Partition the header include path sets and add uapi/ header directories
  UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers
  UAPI: (Scripted) Convert #include "..." to #include <path/...> in drivers/gpu/
  UAPI: (Scripted) Remove redundant DRM UAPI header #inclusions from drivers/gpu/.
  UAPI: Refer to the DRM UAPI headers with <...> and from certain headers only
2012-10-03 13:45:43 -07:00
Yuval Mintz
065f8b9210 bnx2x: fix ring size for 10G functions
Commit d760fc37b0 caused
1G functions to allocate rx rings which were 1/10 of the
size of 10G functions' rx rings.

However, it also caused 10G functions on 5771x boards to
allocate small rings, which limits their possible (default)
rx throughput. This patch causes all 10G functions to use
rings of intended length by default.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-10-03 16:34:15 -04:00
Vipul Pandya
8c357ebd56 cxgb4: Dynamically allocate memory in t4_memory_rw() and get_vpd_params()
This patch changes memory allocation to reduce stack footprint

Signed-off-by: Jay Hernandez <jay@chelsio.com>
Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-10-03 16:34:15 -04:00