Commit Graph

440802 Commits

Author SHA1 Message Date
Toshiaki Makita
eb7076182d bridge: Fix double free and memory leak around br_allowed_ingress
br_allowed_ingress() has two problems.

1. If br_allowed_ingress() is called by br_handle_frame_finish() and
vlan_untag() in br_allowed_ingress() fails, skb will be freed by both
vlan_untag() and br_handle_frame_finish().

2. If br_allowed_ingress() is called by br_dev_xmit() and
br_allowed_ingress() fails, the skb will not be freed.

Fix these two problems by freeing the skb in br_allowed_ingress()
if it fails.

Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-04-11 15:12:47 -04:00
Thomas Richter
db29868653 bonding: Remove debug_fs files when module init fails
Remove the bonding debug_fs entries when the
module initialization fails. The debug_fs
entries should be removed together with all other
already allocated resources.

Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: Jay Vosburgh <j.vosburgh@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-04-11 15:04:40 -04:00
Linus Torvalds
40e9963e62 Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pullx86 core platform updates from Peter Anvin:
 "This is the x86/platform branch with the objectionable IOSF patches
  removed.

  What is left is proper memory handling for Intel GPUs, and a change to
  the Calgary IOMMU code which will be required to make kexec work
  sanely on those platforms after some upcoming kexec changes"

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, calgary: Use 8M TCE table size by default
  x86/gpu: Print the Intel graphics stolen memory range
  x86/gpu: Add Intel graphics stolen memory quirk for gen2 platforms
  x86/gpu: Add vfunc for Intel graphics stolen memory base address
2014-04-11 12:04:15 -07:00
Linus Torvalds
8eab6cd031 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Peter Anvin:
 "This is a collection of minor fixes for x86, plus the IRET information
  leak fix (forbid the use of 16-bit segments in 64-bit mode)"

NOTE! We may have to relax the "forbid the use of 16-bit segments in
64-bit mode" part, since there may be people who still run and depend on
16-bit Windows binaries under Wine.

But I'm taking this in the current unconditional form for now to see who
(if anybody) screams bloody murder.  Maybe nobody cares.  And maybe
we'll have to update it with some kind of runtime enablement (like our
vm.mmap_min_addr tunable that people who run dosemu/qemu/wine already
need to tweak).

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86-64, modify_ldt: Ban 16-bit segments on 64-bit kernels
  efi: Pass correct file handle to efi_file_{read,close}
  x86/efi: Correct EFI boot stub use of code32_start
  x86/efi: Fix boot failure with EFI stub
  x86/platform/hyperv: Handle VMBUS driver being a module
  x86/apic: Reinstate error IRQ Pentium erratum 3AP workaround
  x86, CMCI: Add proper detection of end of CMCI storms
2014-04-11 11:58:33 -07:00
Linus Torvalds
ede1d63fcc Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull second set of ARM changes from Russell King:
 "This is the remainder of the ARM changes for this merge window.
  Included in this request are:

   - fixes for kprobes for big-endian support
   - fix tracing in soft_restart
   - avoid phys address overflow in kdump code
   - fix reporting of read-only pmd bits in kernel page table dump
   - remove unnecessary (and possibly buggy) call to outer_flush_all()
   - fix a three sparse warnings (missing header file for function
     prototypes)
   - fix pj4 crashing single zImage (thanks to arm-soc merging changes
     which enables this with knowledge that the corresponding fix had
     not even been submitted for my tree before the merge window opened)
   - vfp macro cleanups
   - dump register state on undefined instruction userspace faults when
     debugging"

* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  Dump the registers on undefined instruction userspace faults
  ARM: 8018/1: Add {inc,dec}_preempt_count asm macros
  ARM: 8017/1: Move asm macro get_thread_info to asm/assembler.h
  ARM: 8016/1: Check cpu id in pj4_cp0_init.
  ARM: 8015/1: Add cpu_is_pj4 to distinguish PJ4 because it has some differences with V7
  ARM: add missing system_misc.h include to process.c
  ARM: 8009/1: dcscb.c: remove call to outer_flush_all()
  ARM: 8014/1: mm: fix reporting of read-only PMD bits
  ARM: 8012/1: kdump: Avoid overflow when converting pfn to physaddr
  ARM: 8010/1: avoid tracers in soft_restart
  ARM: kprobes-test: Workaround GAS .align bug
  ARM: kprobes-test: use <asm/opcodes.h> for Thumb instruction building
  ARM: kprobes-test: use <asm/opcodes.h> for ARM instruction building
  ARM: kprobes-test: use <asm/opcodes.h> for instruction accesses
  ARM: probes: fix instruction fetch order with <asm/opcodes.h>
2014-04-11 11:56:40 -07:00
Linus Torvalds
b42e6dc66b Microblaze patches for 3.15-rc1
- Use asm-generic/io.h and fix intc/timer code
 - Clean platform handling
 - Enable some syscalls
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Merge tag 'microblaze-3.15-rc1' of git://git.monstr.eu/linux-2.6-microblaze

Pull Microblaze updates from Michal Simek:
 - use asm-generic/io.h and fix intc/timer code
 - clean platform handling
 - enable some syscalls

* tag 'microblaze-3.15-rc1' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Use asm-generic/io.h
  microblaze: Remove platform folder
  microblaze: Remove generic platform
  microblaze: Sort Kconfig options
  microblaze: Move DTS file to common location at boot/dts folder
  microblaze: Fix compilation failure because of release_thread
  microblaze: Fix sparse warning because of missing cpu.h header
  microblaze: Make timer driver endian aware
  microblaze: Make intc driver endian aware
  microblaze: Wire-up new system calls sched_setattr/getattr
  microblaze: Wire-up preadv/pwritev in syscall table
  microblaze: Enable pselect6 syscall
  microblaze: Drop architecture-specific declaration of early_printk
  microblaze: Rename global function heartbeat()
2014-04-11 11:53:45 -07:00
H. Peter Anvin
b3b42ac2cb x86-64, modify_ldt: Ban 16-bit segments on 64-bit kernels
The IRET instruction, when returning to a 16-bit segment, only
restores the bottom 16 bits of the user space stack pointer.  We have
a software workaround for that ("espfix") for the 32-bit kernel, but
it relies on a nonzero stack segment base which is not available in
32-bit mode.

Since 16-bit support is somewhat crippled anyway on a 64-bit kernel
(no V86 mode), and most (if not quite all) 64-bit processors support
virtualization for the users who really need it, simply reject
attempts at creating a 16-bit segment when running on top of a 64-bit
kernel.

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/n/tip-kicdm89kzw9lldryb1br9od0@git.kernel.org
Cc: <stable@vger.kernel.org>
2014-04-11 10:10:09 -07:00
Paul Bolle
fa730d6277 Blackfin: remove "config IP_CHECKSUM_L1"
The only user of Kconfig symbol IP_CHECKSUM_L1 got removed in v2.6.33,
with commit ddf9ddacef ("Blackfin: convert
to generic checksum code"). We can remove the Kconfig entry for this
unused symbol now.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
2014-04-11 23:41:52 +08:00
Paul Bolle
41f8fd926e blackfin: Remove GENERIC_GPIO config option again
The Kconfig symbol GENERIC_GPIO was removed in v3.10. Nothing cares
about it anymore. It popped up somehow in v3.13, so it can be removed
again.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
2014-04-11 23:41:51 +08:00
Thomas Gleixner
e8fac6334d blackfin:Use generic /proc/interrupts implementation
There is nothing special in that blackfin code. Use the core
implementation.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Steven Miao <realmz6@gmail.com>
Cc: bfin <adi-buildroot-devel@lists.sourceforge.net>
2014-04-11 23:40:55 +08:00
Paul Bolle
30fc7ebe84 blackfin: bf60x: fix typo "CONFIG_PM_BFIN_WAKE_PA15_POL"
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Steven Miao <realmz6@gmail.com>
2014-04-11 22:36:15 +08:00
Russell King
98f0701314 Merge branch 'devel-stable' into for-next 2014-04-11 14:50:13 +01:00
Russell King
53f1d9afb4 Merge branches 'fixes' and 'misc' into for-next 2014-04-11 14:50:05 +01:00
Russell King
b5b6b5f544 Dump the registers on undefined instruction userspace faults
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-04-11 14:48:39 +01:00
Wang Shilong
e4fbaee292 Btrfs: fix compile warnings on on avr32 platform
fs/btrfs/scrub.c: In function 'get_raid56_logic_offset':
fs/btrfs/scrub.c:2269: warning: comparison of distinct pointer types lacks a cast
fs/btrfs/scrub.c:2269: warning: right shift count >= width of type
fs/btrfs/scrub.c:2269: warning: passing argument 1 of '__div64_32' from incompatible pointer type

Since @rot is an int type, we should not use do_div(), fix it.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
2014-04-11 06:35:50 -07:00
Mitch A Williams
5b7af02c26 i40evf: program RSS LUT correctly
A recent change broke the RSS LUT programming, causing it to be
programmed with all 0. Correct this by actually assigning the
incremented value back to the counter variable so that the increment
will be remembered by the calling function.

While we're at it, add a proper kernel-doc function comment to our
helper function.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-11 06:23:25 -07:00
Francois Romieu
fe6d4aa437 i40evf: remove open-coded skb_cow_head
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-11 06:16:12 -07:00
Francois Romieu
a173f045a8 ixgb: remove open-coded skb_cow_head
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-11 06:08:46 -07:00
Francois Romieu
6b8f07b490 igbvf: remove open-coded skb_cow_head
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-11 05:58:09 -07:00
Jakub Kicinski
5499a968d4 igb: fix last_rx_timestamp usage
last_rx_timestamp should be updated only when rx time stamp is
read. Also it's only used with NICs that have per-interface time
stamping resources so it can be moved to adapter structure and
set in igb_ptp_rx_rgtstamp().

Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Acked-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-11 05:58:08 -07:00
Francois Romieu
06c14e5adb igb: remove open-coded skb_cow_head
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-11 05:58:08 -07:00
Francois Romieu
bcf1f57fbf e1000e: remove open-coded skb_cow_head
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-11 05:58:08 -07:00
Francois Romieu
4a54b1e598 e1000: remove open-coded skb_cow_head
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-11 05:58:07 -07:00
Jakub Kicinski
7dc86605a2 e1000: remove debug messages with function names
e1000_hw.c contains a lot of debug messages which print
name of invoked function and contain no new line character
at the end.  Remove them as equivalent information can be
nowadays obtained using function tracer.

Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-11 05:58:07 -07:00
Francois Romieu
8f12c03483 ixgbevf: remove open-coded skb_cow_head
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-11 05:58:06 -07:00
Mark Rustad
ea699569b1 ixgbevf: Add bit to mark work queue initialization
An indication of work queue initialization is needed. This is
because register accesses prior to that time can detect a removal
and attempt to schedule the watchdog task. Adding the
__IXGBEVF_WORK_INIT bit allows this to be checked and if not
set prevent the watchdog task scheduling. By checking for a
removal right after initialization, the probe can be failed
at that point without getting the watchdog task involved.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-11 05:58:06 -07:00
Francois Romieu
2049e1f6f5 ixgbe: remove open-coded skb_cow_head
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-11 05:58:06 -07:00
Mark Rustad
58cf663f0e ixgbe: Add bit to mark service task initialization
There needs to be an indication when the service task has been
initialized. This is because register access prior to that time
can detect a removal and attempt to schedule the service task.
Adding the __IXGBE_SERVICE_INITED bit allows this to be checked
and if not set prevent the service task scheduling. By checking
for a removal right after initialization, the probe can be failed
at that point without getting the service task involved.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-11 05:58:05 -07:00
Ingo Molnar
3151b942ba * Fix EFI boot regression introduced during the merge window where the
firmware was reading random values from the stack because we were
    passing a pointer to the wrong object type.
 
  * Kernel corruption has been reported when booting with the EFI boot
    stub which was tracked down to setting a bogus value for
    bp->hdr.code32_start, resulting in corruption during relocation.
 
  * Olivier Martin reported that the wrong file handles were being passed
    to efi_file_(read|close), which works for x86 by luck due to the way
    that the FAT driver is implemented, but doesn't work on ARM.
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Merge tag 'efi-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into x86/urgent

Pull EFI fixes from Matt Fleming:

"* Fix EFI boot regression introduced during the merge window where the
   firmware was reading random values from the stack because we were
   passing a pointer to the wrong object type.

 * Kernel corruption has been reported when booting with the EFI boot
   stub which was tracked down to setting a bogus value for
   bp->hdr.code32_start, resulting in corruption during relocation.

 * Olivier Martin reported that the wrong file handles were being passed
   to efi_file_(read|close), which works for x86 by luck due to the way
   that the FAT driver is implemented, but doesn't work on ARM."

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-04-11 10:25:28 +02:00
Dave Hansen
34bf6ef94a mm: slab/slub: use page->list consistently instead of page->lru
'struct page' has two list_head fields: 'lru' and 'list'.  Conveniently,
they are unioned together.  This means that code can use them
interchangably, which gets horribly confusing like with this nugget from
slab.c:

>	list_del(&page->lru);
>	if (page->active == cachep->num)
>		list_add(&page->list, &n->slabs_full);

This patch makes the slab and slub code use page->lru universally instead
of mixing ->list and ->lru.

So, the new rule is: page->lru is what the you use if you want to keep
your page on a list.  Don't like the fact that it's not called ->list?
Too bad.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Christoph Lameter <cl@linux.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2014-04-11 10:06:06 +03:00
WANG Chao
0534af01cc x86, calgary: Use 8M TCE table size by default
New kexec-tools wants to pass kdump kernel needed memmap via E820
directly, instead of memmap=exactmap. This makes saved_max_pfn not
be passed down to 2nd kernel. To keep 1st kernel and 2nd kernel using
the same TCE table size, Muli suggest to hard code the size to max (8M).

We can't get rid of saved_max_pfn this time, for backward compatibility
with old first kernel and new second kernel. However new first kernel
and old second kernel can not work unfortunately.

v2->v1:
- retain saved_max_pfn so new 2nd kernel can work with old 1st kernel
  from Vivek

Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Muli Ben-Yehuda <mulix@mulix.org>
Acked-by: Jon Mason <jdmason@kudzu.us>
Link: http://lkml.kernel.org/r/1394463120-26999-1-git-send-email-chaowang@redhat.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2014-04-10 19:51:32 -07:00
Steven Rostedt (Red Hat)
17a280ea81 tracing: Add missing function triggers dump and cpudump to README
The debugfs tracing README file lists all the function triggers except for
dump and cpudump. These should be added too.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-04-10 22:43:37 -04:00
Florian Westphal
6d39d589bb net: core: don't account for udp header size when computing seglen
In case of tcp, gso_size contains the tcpmss.

For UFO (udp fragmentation offloading) skbs, gso_size is the fragment
payload size, i.e. we must not account for udp header size.

Otherwise, when using virtio drivers, a to-be-forwarded UFO GSO packet
will be needlessly fragmented in the forward path, because we think its
individual segments are too large for the outgoing link.

Fixes: fe6cc55f3a ("net: ip, ipv6: handle gso skbs in forwarding path")
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Reported-by: Tobias Brunner <tobias@strongswan.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-04-10 21:41:25 -04:00
Mark Brown
6eadd84631 Merge remote-tracking branches 'spi/fix/complete', 'spi/fix/efm32', 'spi/fix/omap2-mcspi' and 'spi/fix/qup' into spi-linus 2014-04-10 23:39:52 +01:00
Mark Brown
09c0998efc spi: Updates for v3.15
A busy release for both cleanups and new drivers this time along with
 further factoring out of replicated code into the core:
 
  - Provide support in the core for DMA mapping transfers - essentially
    all drivers weren't implementing this properly, now there's no
    excuse.
  - Dual and quad mode support for spidev.
  - Fix handling of cs_change in the generic implementation.
  - Remove the S3C_DMA code from the s3c64xx driver now that all the
    platforms using it have been converted to dmaengine.
  - Lots of improvements to the Renesas SPI controllers.
  - Drivers for Allwinner A10 and A31, Qualcomm QUP and Xylinx xtfpga.
  - Removal of the bitrotted ti-ssp driver.
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Merge tag 'spi-v3.15' into spi-linus

spi: Updates for v3.15

A busy release for both cleanups and new drivers this time along with
further factoring out of replicated code into the core:

 - Provide support in the core for DMA mapping transfers - essentially
   all drivers weren't implementing this properly, now there's no
   excuse.
 - Dual and quad mode support for spidev.
 - Fix handling of cs_change in the generic implementation.
 - Remove the S3C_DMA code from the s3c64xx driver now that all the
   platforms using it have been converted to dmaengine.
 - Lots of improvements to the Renesas SPI controllers.
 - Drivers for Allwinner A10 and A31, Qualcomm QUP and Xylinx xtfpga.
 - Removal of the bitrotted ti-ssp driver.

# gpg: Signature made Mon 31 Mar 2014 12:03:09 BST using RSA key ID 7EA229BD
# gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>"
# gpg:                 aka "Mark Brown <broonie@debian.org>"
# gpg:                 aka "Mark Brown <broonie@kernel.org>"
# gpg:                 aka "Mark Brown <broonie@tardis.ed.ac.uk>"
# gpg:                 aka "Mark Brown <broonie@linaro.org>"
# gpg:                 aka "Mark Brown <Mark.Brown@linaro.org>"
2014-04-10 23:39:52 +01:00
Mark Brown
039df7a7cb Merge remote-tracking branches 'regulator/fix/bcm590xx', 'regulator/fix/s2m' and 'regulator/fix/s5m8767' into regulator-linus 2014-04-10 23:39:38 +01:00
Mark Brown
ed59c8f93d regulator: Updates for v3.15
This release has lots and lots of small cleanups and fixes in the
 regulator subsystem, mainly cleaning up some bad patterns that got
 duplicated in DT code, but otherwise very little of note outside
 of the scope of the relevant drivers:
 
  - Support for configuration of the initial state for gpio regulators
    with multi-voltage support.
  - Support for calling regulator_set_voltage() on fixed regulators.
  - New drivers for Broadcom BCM590xx, Freescale pfuze200, Samsung S2MPA01 &
    S2MPS11/4, some PWM controlled regulators found on some ST boards and
    TI TPS65218.
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Merge tag 'regulator-v3.15' into regulator-linus

regulator: Updates for v3.15

This release has lots and lots of small cleanups and fixes in the
regulator subsystem, mainly cleaning up some bad patterns that got
duplicated in DT code, but otherwise very little of note outside
of the scope of the relevant drivers:

 - Support for configuration of the initial state for gpio regulators
   with multi-voltage support.
 - Support for calling regulator_set_voltage() on fixed regulators.
 - New drivers for Broadcom BCM590xx, Freescale pfuze200, Samsung S2MPA01 &
   S2MPS11/4, some PWM controlled regulators found on some ST boards and
   TI TPS65218.

# gpg: Signature made Mon 31 Mar 2014 12:29:14 BST using RSA key ID 7EA229BD
# gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>"
# gpg:                 aka "Mark Brown <broonie@debian.org>"
# gpg:                 aka "Mark Brown <broonie@kernel.org>"
# gpg:                 aka "Mark Brown <broonie@tardis.ed.ac.uk>"
# gpg:                 aka "Mark Brown <broonie@linaro.org>"
# gpg:                 aka "Mark Brown <Mark.Brown@linaro.org>"
2014-04-10 23:39:37 +01:00
Dan Williams
3c31b52f96 scsi: async sd resume
async_schedule() sd resume work to allow disks and other devices to
resume in parallel.

This moves the entirety of scsi_device resume to an async context to
ensure that scsi_device_resume() remains ordered with respect to the
completion of the start/stop command.  For the duration of the resume,
new command submissions (that do not originate from the scsi-core) will
be deferred (BLKPREP_DEFER).

It adds a new ASYNC_DOMAIN_EXCLUSIVE(scsi_sd_pm_domain) as a container
of these operations.  Like scsi_sd_probe_domain it is flushed at
sd_remove() time to ensure async ops do not continue past the
end-of-life of the sdev.  The implementation explicitly refrains from
reusing scsi_sd_probe_domain directly for this purpose as it is flushed
at the end of dpm_resume(), potentially defeating some of the benefit.
Given sdevs are quiesced it is permissible for these resume operations
to bleed past the async_synchronize_full() calls made by the driver
core.

We defer the resolution of which pm callback to call until
scsi_dev_type_{suspend|resume} time and guarantee that the callback
parameter is never NULL.  With this in place the type of resume
operation is encoded in the async function identifier.

There is a concern that async resume could trigger PSU overload.  In the
enterprise, storage enclosures enforce staggered spin-up regardless of
what the kernel does making async scanning safe by default.  Outside of
that context a user can disable asynchronous scanning via a kernel
command line or CONFIG_SCSI_SCAN_ASYNC.  Honor that setting when
deciding whether to do resume asynchronously.

Inspired by Todd's analysis and initial proposal [2]:
https://01.org/suspendresume/blogs/tebrandt/2013/hard-disk-resume-optimization-simpler-approach

Cc: Len Brown <len.brown@intel.com>
Cc: Phillip Susi <psusi@ubuntu.com>
[alan: bug fix and clean up suggestion]
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Suggested-by: Todd Brandt <todd.e.brandt@linux.intel.com>
[djbw: kick all resume work to the async queue]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2014-04-10 15:30:35 -07:00
Tim Kryger
1e7914058e regulator: bcm590xx: Set n_voltages for linear reg
Fix the macro used to define linear range regulators to include the
number of voltages.

Signed-off-by: Tim Kryger <tim.kryger@linaro.org>
Acked-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-04-10 23:10:36 +01:00
Chris Metcalf
312103d64d AUDIT: make audit_is_compat depend on CONFIG_AUDIT_COMPAT_GENERIC
On systems with CONFIG_COMPAT we introduced the new requirement that
audit_classify_compat_syscall() exists.  This wasn't true for everything
(apparently not for "tilegx", which I know less that nothing about.)

Instead of wrapping the preprocessor optomization with CONFIG_COMPAT we
should have used the new CONFIG_AUDIT_COMPAT_GENERIC.  This patch uses
that config option to make sure only arches which intend to implement
this have the requirement.

This works fine for tilegx according to Chris Metcalf
Signed-off-by: Eric Paris <eparis@redhat.com>
2014-04-10 17:51:29 -04:00
Linus Torvalds
9e897e13bd Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd
Pull exofs updates from Boaz Harrosh:
 "Trivial updates to exofs for 3.15-rc1

  Just a few fixes sent by people"

* 'for-linus' of git://git.open-osd.org/linux-open-osd:
  MAINTAINERS: Update email address for bhalevy
  fs: Mark functions as static in exofs/ore_raid.c
  fs: Mark function as static in exofs/super.c
2014-04-10 14:33:02 -07:00
Keith Busch
edd10d3328 NVMe: Retry failed commands with non-fatal errors
For commands returned with failed status, queue these for resubmission
and continue retrying them until success or for a limited amount of
time. The final timeout was arbitrarily chosen so requests can't be
retried indefinitely.

Since these are requeued on the nvmeq that submitted the command, the
callbacks have to take an nvmeq instead of an nvme_dev as a parameter
so that we can use the locked queue to append the iod to retry later.

The nvme_iod conviently can be used to track how long we've been trying
to successfully complete an iod request. The nvme_iod also provides the
nvme prp dma mappings, so I had to move a few things around so we can
keep those mappings.

Signed-off-by: Keith Busch <keith.busch@intel.com>
[fixed checkpatch issue with long line]
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2014-04-10 17:11:59 -04:00
Keith Busch
4cc09e2dc4 NVMe: Add getgeo to block ops
Some programs require HDIO_GETGEO work, which requires we implement
getgeo.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2014-04-10 17:06:11 -04:00
Dan McLeran
b9afca3efb NVMe: Start-stop nvme_thread during device add-remove.
Done to ensure nvme_thread is not running when there
are no devices to poll.

Signed-off-by: Dan McLeran <daniel.mcleran@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2014-04-10 17:04:46 -04:00
Keith Busch
b355084a89 NVMe: Make I/O timeout a module parameter
Increase the default timeout to 30 seconds to match SCSI.

Signed-off-by: Keith Busch <keith.busch@intel.com>
[use byte instead of ushort]
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2014-04-10 17:04:38 -04:00
Keith Busch
33b1e95c90 NVMe: CPU hot plug notification
Registers with hot cpu notification to rebalance, and potentially allocate
additional, io queues.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2014-04-10 17:03:42 -04:00
Keith Busch
42f614201e NVMe: per-cpu io queues
The device's IO queues are associated with CPUs, so we can use a per-cpu
variable to map the a qid to a cpu. This provides a convienient way
to optimally assign queues to multiple cpus when the device supports
fewer queues than the host has cpus. The previous implementation may
have assigned these poorly in these situations. This patch addresses
this by sharing queues among cpus that are "close" together and should
have a lower lock contention penalty.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2014-04-10 17:03:15 -04:00
Harald Hoyer
0723a0473f btrfs: allow mounting btrfs subvolumes with different ro/rw options
Given the following /etc/fstab entries:

/dev/sda3 /mnt/foo btrfs subvol=foo,ro 0 0
/dev/sda3 /mnt/bar btrfs subvol=bar,rw 0 0

you can't issue:

$ mount /mnt/foo
$ mount /mnt/bar

You would have to do:

$ mount /mnt/foo
$ mount -o remount,rw /mnt/foo
$ mount --bind -o remount,ro /mnt/foo
$ mount /mnt/bar

or

$ mount /mnt/bar
$ mount --rw /mnt/foo
$ mount --bind -o remount,ro /mnt/foo

With this patch you can do

$ mount /mnt/foo
$ mount /mnt/bar

$ cat /proc/self/mountinfo
49 33 0:41 /foo /mnt/foo ro,relatime shared:36 - btrfs /dev/sda3 rw,ssd,space_cache
87 33 0:41 /bar /mnt/bar rw,relatime shared:74 - btrfs /dev/sda3 rw,ssd,space_cache

Signed-off-by: Chris Mason <clm@fb.com>
2014-04-10 13:32:50 -07:00
Matt Fleming
47514c996f efi: Pass correct file handle to efi_file_{read,close}
We're currently passing the file handle for the root file system to
efi_file_read() and efi_file_close(), instead of the file handle for the
file we wish to read/close.

While this has worked up until now, it seems that it has only been by
pure luck. Olivier explains,

 "The issue is the UEFI Fat driver might return the same function for
  'fh->read()' and 'h->read()'. While in our case it does not work with
  a different implementation of EFI_SIMPLE_FILE_SYSTEM_PROTOCOL. In our
  case, we return a different pointer when reading a directory and
  reading a file."

Fixing this actually clears up the two functions because we can drop one
of the arguments, and instead only pass a file 'handle' argument.

Reported-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2014-04-10 21:20:03 +01:00
Matt Fleming
7e8213c1f3 x86/efi: Correct EFI boot stub use of code32_start
code32_start should point at the start of the protected mode code, and
*not* at the beginning of the bzImage. This is much easier to do in
assembly so document that callers of make_boot_params() need to fill out
code32_start.

The fallout from this bug is that we would end up relocating the image
but copying the image at some offset, resulting in what appeared to be
memory corruption.

Reported-by: Thomas Bächler <thomas@archlinux.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2014-04-10 21:19:52 +01:00