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549278 commits

Author SHA1 Message Date
Taku Izumi
0bbea1ce98 x86/efi: Rename print_efi_memmap() to efi_print_memmap()
This patch renames print_efi_memmap() to efi_print_memmap() and
make it global function so that we can invoke it outside of
arch/x86/platform/efi/efi.c

Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2015-10-12 14:20:08 +01:00
Ben Hutchings
9ac4d5ab3e efi: Auto-load the efi-pstore module
efi-pstore should be auto-loaded on EFI systems, same as efivars.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Lee, Chun-Yi <jlee@suse.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2015-10-12 14:20:08 +01:00
Ard Biesheuvel
a104171334 efi: Introduce EFI_NX_PE_DATA bit and set it from properties table
UEFI v2.5 introduces a runtime memory protection feature that splits
PE/COFF runtime images into separate code and data regions. Since this
may require special handling by the OS, allocate a EFI_xxx bit to
keep track of whether this feature is currently active or not.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2015-10-12 14:20:07 +01:00
Ard Biesheuvel
bf924863c9 efi: Add support for UEFIv2.5 Properties table
Version 2.5 of the UEFI spec introduces a new configuration table
called the 'EFI Properties table'. Currently, it is only used to
convey whether the Memory Protection feature is enabled, which splits
PE/COFF images into separate code and data memory regions.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2015-10-12 14:20:07 +01:00
Taku Izumi
8be4432eb6 efi: Add EFI_MEMORY_MORE_RELIABLE support to efi_md_typeattr_format()
UEFI spec 2.5 introduces new Memory Attribute Definition named
EFI_MEMORY_MORE_RELIABLE. This patch adds this new attribute
support to efi_md_typeattr_format().

Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2015-10-12 14:20:06 +01:00
Matt Fleming
ae2ee627dc efifb: Add support for 64-bit frame buffer addresses
The EFI Graphics Output Protocol uses 64-bit frame buffer addresses
but these get truncated to 32-bit by the EFI boot stub when storing
the address in the 'lfb_base' field of 'struct screen_info'.

Add a 'ext_lfb_base' field for the upper 32-bits of the frame buffer
address and set VIDEO_TYPE_CAPABILITY_64BIT_BASE when the field is
useable.

It turns out that the reason no one has required this support so far
is that there's actually code in tianocore to "downgrade" PCI
resources that have option ROMs and 64-bit BARS from 64-bit to 32-bit
to cope with legacy option ROMs that can't handle 64-bit addresses.
The upshot is that basically all GOP devices in the wild use a 32-bit
frame buffer address.

Still, it is possible to build firmware that uses a full 64-bit GOP
frame buffer address. Chad did, which led to him reporting this issue.

Add support in anticipation of GOP devices using 64-bit addresses more
widely, and so that efifb works out of the box when that happens.

Reported-by: Chad Page <chad.page@znyx.com>
Cc: Pete Hawkins <pete.hawkins@znyx.com>
Acked-by: Peter Jones <pjones@redhat.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2015-10-12 14:20:06 +01:00
Leif Lindholm
7968c0e338 efi/arm64: Clean up efi_get_fdt_params() interface
As we now have a common debug infrastructure between core and arm64 efi,
drop the bit of the interface passing verbose output flags around.

Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2015-10-12 14:20:06 +01:00
Leif Lindholm
c9494dc818 arm64: Use core efi=debug instead of uefi_debug command line parameter
Now that we have an efi=debug command line option in the core code, use
this instead of the arm64-specific uefi_debug option.

Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2015-10-12 14:20:05 +01:00
Leif Lindholm
12dd00e83f efi/x86: Move efi=debug option parsing to core
fed6cefe3b ("x86/efi: Add a "debug" option to the efi= cmdline")
adds the DBG flag, but does so for x86 only. Move this early param
parsing to core code.

Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Borislav Petkov <bp@suse.de>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2015-10-12 14:20:05 +01:00
Paul Gortmaker
18aefbc5cc drivers/firmware: Make efi/esrt.c driver explicitly non-modular
The Kconfig for this driver is currently hidden with:

config EFI_ESRT
        bool

...meaning that it currently is not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init translates to device_initcall in the non-modular
case, the init ordering remains unchanged with this commit.

We leave some tags like MODULE_AUTHOR for documentation purposes.

We don't replace module.h with init.h since the file already has that.

Cc: Peter Jones <pjones@redhat.com>
Cc: linux-efi@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2015-10-12 14:20:05 +01:00
Ingo Molnar
cdbcd239e2 Merge branch 'x86/ras' into ras/core, to pick up changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-12 14:52:34 +02:00
John Stultz
6035519fcf timers, kselftest: Add 'adjtick' test to validate adjtimex() tick adjustments
Recently a kernel side NTP bug was fixed via the following commit:

  2619d7e9c9 ("time: Fix timekeeping_freqadjust()'s incorrect use of abs() instead of abs64()")

When the bug was reported it was difficult to detect, except by
tweaking the adjtimex tick value, and noticing how quickly the
adjustment took:

	https://lkml.org/lkml/2015/9/1/488

Thus this patch introduces a new test which manipulates the
adjtimex tick value and validates that the results are what we
expect.

Signed-off-by: John Stultz <john.stultz@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Miroslav Lichvar <mlichvar@redhat.com>
Cc: Nuno Gonçalves <nunojpg@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1444094217-20258-1-git-send-email-john.stultz@linaro.org
[ Tidied up the code and the changelog a bit. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-12 09:51:34 +02:00
Ingo Molnar
b9f27c0f4f Linux 4.3-rc5
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Merge tag 'v4.3-rc5' into timers/core, to pick up fixes before applying new changes

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-12 09:51:18 +02:00
Daniel Bristot de Oliveira
9babcd7929 sched, tracing: Stop/start critical timings around the idle=poll idle loop
When using idle=poll, the preemptoff tracer is always showing
the idle task as the culprit for long latencies. That happens
because critical timings are not stopped before idle loop. This
patch stops critical timings before entering the idle loop,
starting it again after the idle loop.

This problem does not affect the irqsoff tracer because
interruptions are enabled before entering the idle loop.

Signed-off-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Reviewed-by: Luis Claudio R. Goncalves <lgoncalv@redhat.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/10fc3705874aef11dbe152a068b591a7be1899b4.1444314899.git.bristot@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-12 09:45:25 +02:00
Dave Airlie
7b98040a77 Merge branch 'linux-4.3' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes
Nothing too crazy here, a couple of regression fixes + runpm/fbcon
race fix.

* 'linux-4.3' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
  drm/nouveau/bios: fix OF loading
  drm/nouveau/fbcon: take runpm reference when userspace has an open fd
  drm/nouveau/nouveau: Disable AGP for SiS 761
  drm/nouveau/display: allow up to 16k width/height for fermi+
  drm/nouveau/bios: translate devinit pri/sec i2c bus to internal identifiers
2015-10-12 13:59:04 +10:00
Ilia Mirkin
25d295882a drm/nouveau/bios: fix OF loading
Currently OF bios load fails for a few reasons:
 - checksum failure
 - bios size too small
 - no PCIR header
 - bios length not a multiple of 4

In this change, we resolve all of the above by ignoring any checksum
failures (since OF VBIOS tends not to have a checksum), and faking the
PCIR data when loading from OF.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-10-12 13:54:56 +10:00
Ben Skeggs
f231976c2e drm/nouveau/fbcon: take runpm reference when userspace has an open fd
We need to do this in order to prevent accesses to the device while it's
powered down.  Userspace may have an mmap of the fb, and there's no good
way (that I know of) to prevent it from touching the device otherwise.

This fixes some nasty races between runpm and plymouth on some systems,
which result in the GPU getting very upset and hanging the boot.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Cc: stable@vger.kernel.org
2015-10-12 13:54:40 +10:00
Ondrej Zary
953132b56a drm/nouveau/nouveau: Disable AGP for SiS 761
SiS 761 chipset does not support AGP cards but has AGP capability (for
the onboard video). At least PC Chips A31G board using this chipset has
an AGP-like AGPro slot that's wired to the PCI bus. Enabling AGP will
fail (GPU lockup and software fbcon, X11 hangs).

Add support for matching just the host bridge in nvkm_device_agp_quirks
and add entry for SiS 761 with mode 0 (AGP disabled).

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-10-12 13:48:29 +10:00
Ilia Mirkin
5102ec3e99 drm/nouveau/display: allow up to 16k width/height for fermi+
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-10-12 13:48:28 +10:00
Ben Skeggs
2239b76b0b drm/nouveau/bios: translate devinit pri/sec i2c bus to internal identifiers
fdo#92013.

Regression from "i2c: transition pad/ports away from being based on nvkm_object"

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-10-12 13:48:28 +10:00
Rasmus Villemoes
9fc4468d54 timers: Use __fls in apply_slack()
In apply_slack(), find_last_bit() is applied to a bitmask consisting
of precisely BITS_PER_LONG bits. Since mask is non-zero, we might as
well eliminate the function call and use __fls() directly. On x86_64,
this shaves 23 bytes of the only caller, mod_timer().

This also gets rid of Coverity CID 1192106, but that is a false
positive: Coverity is not aware that mask != 0 implies that
find_last_bit will not return BITS_PER_LONG.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: John Stultz <john.stultz@linaro.org>
Link: http://lkml.kernel.org/r/1443771931-6284-1-git-send-email-linux@rasmusvillemoes.dk
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-10-11 22:13:46 +02:00
Guillaume Gomez
cfed432d7f clocksource: Remove return statement from void functions
Signed-off-by: Guillaume Gomez <guillaume1.gomez@gmail.com>
Cc: John Stultz <john.stultz@linaro.org>
Link: http://lkml.kernel.org/r/CAAOQCfSDgmqSWDBsetau%2ByF8x0%2BDagCF_pfFw0p5xH_BKkKEog@mail.gmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-10-11 22:13:46 +02:00
Gabriel Laskar
7e0abcd6b7 x86/mce: Include linux/ioctl.h in uapi mce header
asm/ioctls.h contains definition for termios, not just the _IO* macros.

This error was found with a tool in development used to generate
automated pretty-printing functions for ioctl decoding in strace.

Signed-off-by: Gabriel Laskar <gabriel@lse.epita.fr>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1444141657-14898-2-git-send-email-gabriel@lse.epita.fr
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-10-11 21:24:27 +02:00
Andy Shevchenko
4faefda97b x86/io_apic: Make eoi_ioapic_pin() static
We have to define internally used function as static, otherwise the following
warning will be generated:

arch/x86/kernel/apic/io_apic.c:532:6: warning: no previous prototype for 'eoi_ioapic_pin' [-Wmissing-prototypes]

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Jiang Liu <jiang.liu@linux.intel.com>
Link: http://lkml.kernel.org/r/1444400685-98611-1-git-send-email-andriy.shevchenko@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-10-11 21:10:31 +02:00
Linus Torvalds
25cb62b764 Linux 4.3-rc5 2015-10-11 11:09:45 -07:00
Linus Torvalds
9a78f9c3c6 Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Thomas Gleixner:
 "Fix a long standing state race in finish_task_switch()"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/core: Fix TASK_DEAD race in finish_task_switch()
2015-10-11 10:24:32 -07:00
Linus Torvalds
7cbbab00cb Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fix from Thomas Glexiner:
 "Fix build breakage on powerpc in perf tools"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf tools: Fix build break on powerpc due to sample_reg_masks
2015-10-11 10:23:52 -07:00
Linus Torvalds
a145164ba8 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull maintainer email update from Thomas Gleixner:
 "Change Matt Fleming's email address in the maintainers file"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  MAINTAINERS: Change Matt Fleming's email address
2015-10-11 10:23:00 -07:00
Linus Torvalds
e3d6e0e701 Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
 "Three trivial commits:

   - Fix a kerneldoc regression

   - Export handle_bad_irq to unbreak a driver in next

   - Add an accessor for the of_node field so refactoring in next does
     not depend on merge ordering"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqdomain: Add an accessor for the of_node field
  genirq: Fix handle_bad_irq kerneldoc comment
  genirq: Export handle_bad_irq
2015-10-11 10:16:59 -07:00
Linus Torvalds
5a433f7a6b SCSI fixes on 20151010
This is a set of three bug fixes, two of which are regressions from recent
 updates (the 3ware one from 4.1 and the device handler fixes from 4.2).
 
 Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is a set of three bug fixes, two of which are regressions from
  recent updates (the 3ware one from 4.1 and the device handler fixes
  from 4.2)"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  3w-9xxx: don't unmap bounce buffered commands
  scsi_dh: Use the correct module name when loading device handler
  libiscsi: Fix iscsi_check_transport_timeouts possible infinite loop
2015-10-11 10:02:30 -07:00
Linus Torvalds
f24fe98df8 One bug fix for raid1/raid10.
Very careless bug earler in 4.3-rc, now fixed :-)
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Merge tag 'md/4.3-rc4-fix' of git://neil.brown.name/md

Pull md bugfix from Neil Brown:
 "One bug fix for raid1/raid10.

  Very careless bug earler in 4.3-rc, now fixed :-)"

* tag 'md/4.3-rc4-fix' of git://neil.brown.name/md:
  crash in md-raid1 and md-raid10 due to incorrect list manipulation
2015-10-11 09:35:51 -07:00
Alexandre Belloni
b94e22805a iio: mxs-lradc: Fix temperature offset
0° Kelvin is actually −273.15°C, not -272.15°C. Fix the temperature offset.
Also improve the comment explaining the calculation.

Reported-by: Janusz Użycki <j.uzycki@elpromaelectronics.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Marek Vasut <marex@denx.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-10-11 15:02:02 +01:00
Hannes Frederic Sowa
9ef2e965e5 ipv6: drop frames with attached skb->sk in forwarding
This is a clone of commit 2ab957492d ("ip_forward: Drop frames with
attached skb->sk") for ipv6.

This commit has exactly the same reasons as the above mentioned commit,
namely to prevent panics during netfilter reload or a misconfigured stack.

Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-11 05:30:44 -07:00
Hannes Frederic Sowa
d9e4ce65b2 ipv6: gre: setup default multicast routes over PtP links
GRE point-to-point interfaces should also support ipv6 multicast. Setting
up default multicast routes on interface creation was forgotten. Add it.

Bugzilla: <https://bugzilla.kernel.org/show_bug.cgi?id=103231>
Cc: Julien Muchembled <jm@jmuchemb.eu>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Nicolas Dumazet <ndumazet@google.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-11 05:30:43 -07:00
Yuval Mintz
f9468e8dc8 bnx2x: Prevent UDP 4-tuple configurations on older adapters
Configuring 4-tuple RSS hsahing for UDP
[E.g., by using `ethtool -N <interface> rx-flow-hash udp4 sdfn']
on a 57710/57711 adapter would cause it to assert as HW does not
support such a configuration.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-11 05:09:30 -07:00
David S. Miller
5edc11ab87 Merge branch 'mlxsw-fixes'
Jiri Pirko says:

====================
mlxsw: couple of fixes

Just a couple of small fixes.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-11 05:08:14 -07:00
Ido Schimmel
bee1f753bf mlxsw: Fix bug in __mlxsw_item_bit_array_offset
When calculating the shift needed in order to access a bit array element
in a byte, we should multiply the index by the element size and not
assume it is fixed at 2-bits.

Fixes: 93c1edb27f ("mlxsw: Introduce Mellanox switch driver core")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-11 05:08:09 -07:00
Elad Raz
4b0c2541cb mlxsw: switchx2: changing order of exit fallbacks
Fixes: 31557f0f97 ("mlxsw: Introduce Mellanox SwitchX-2 ASIC support")
Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-11 05:08:08 -07:00
WANG Cong
6ac644a8ae sch_hhf: fix return value of hhf_drop()
Similar to commit c0afd9ce4d ("fq_codel: fix return value of fq_codel_drop()")
->drop() is supposed to return the number of bytes it dropped,
but hhf_drop () returns the id of the bucket where it drops
a packet from.

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Terry Lam <vtlam@google.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-11 04:49:33 -07:00
Thomas Gleixner
e9849777d0 genirq: Add flag to force mask in disable_irq[_nosync]()
If an irq chip does not implement the irq_disable callback, then we
use a lazy approach for disabling the interrupt. That means that the
interrupt is marked disabled, but the interrupt line is not
immediately masked in the interrupt chip. It only becomes masked if
the interrupt is raised while it's marked disabled. We use this to avoid
possibly expensive mask/unmask operations for common case operations.

Unfortunately there are devices which do not allow the interrupt to be
disabled easily at the device level. They are forced to use
disable_irq_nosync(). This can result in taking each interrupt twice.

Instead of enforcing the non lazy mode on all interrupts of a irq
chip, provide a settings flag, which can be set by the driver for that
particular interrupt line.

Reported-and-tested-by: Duc Dang <dhdang@apm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1510092348370.6097@nanos
2015-10-11 11:33:42 +02:00
Matt Fleming
0ce423b649 efi: Use the generic efi.memmap instead of 'memmap'
Guenter reports that commit:

  7bf793115d ("efi, x86: Rearrange efi_mem_attributes()")

breaks the IA64 compilation with the following error:

  drivers/built-in.o: In function `efi_mem_attributes': (.text+0xde962): undefined reference to `memmap'

Instead of using the (rather poorly named) global variable
'memmap' which doesn't exist on IA64, use efi.memmap which
points to the 'memmap' object on x86 and arm64 and which is NULL
for IA64.

The fact that efi.memmap is NULL for IA64 is OK because IA64
provides its own implementation of efi_mem_attributes().

Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jonathan Zhang <zjzhang@codeaurora.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/20151003222607.GA2682@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-11 11:04:18 +02:00
Thomas Gleixner
fcf8ab690e GIC updates for Linux 4.4:
- Enable basic GICv3 support on 32bit ARM (mostly for running VMs with
   more than 8 virtual CPUs)
 - arm64 changes to deal with firmware limitations that forces a GICv3
   to be used as a GICv2
 - A GICv2m erratum workaround on Applied Micro X-Gene2
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Merge tag 'gic-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core

GIC updates for Linux 4.4 from Marc Zyngier:

- Enable basic GICv3 support on 32bit ARM (mostly for running VMs with
  more than 8 virtual CPUs)
- arm64 changes to deal with firmware limitations that forces a GICv3
  to be used as a GICv2
- A GICv2m erratum workaround on Applied Micro X-Gene2
2015-10-11 10:04:51 +02:00
Matt Fleming
825fcfce81 MAINTAINERS: Change Matt Fleming's email address
My Intel email address will soon expire. Replace it with my
personal address so people still know where to send patches.

Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1444494136-10333-1-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-11 09:54:29 +02:00
Linus Torvalds
4a06c8ac2f USB fixes for 4.3-rc5
Here are some small USB and PHY fixes and quirk updates for 4.3-rc5.
 Nothing major here, full details in the shortlog, and all of these have
 been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some small USB and PHY fixes and quirk updates for 4.3-rc5.

  Nothing major here, full details in the shortlog, and all of these
  have been in linux-next for a while"

* tag 'usb-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: Add device quirk for Logitech PTZ cameras
  USB: chaoskey read offset bug
  USB: Add reset-resume quirk for two Plantronics usb headphones.
  usb: renesas_usbhs: Add support for R-Car H3
  usb: renesas_usbhs: fix build warning if 64-bit architecture
  usb: gadget: bdc: fix memory leak
  phy: berlin-sata: Fix module autoload for OF platform driver
  phy: rockchip-usb: power down phy when rockchip phy probe
  phy: qcom-ufs: fix build error when the component is built as a module
2015-10-10 11:17:45 -07:00
Linus Torvalds
97d0c931c0 TTY/Serial driver fixes for 4.3-rc5
Here are a few bug fixes for the tty core that resolve reported issues,
 and some serial driver fixes as well (including the much-reported imx
 driver problem.)
 
 All of these have been in linux-next with no reported problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver fixes from Greg KH:
 "Here are a few bug fixes for the tty core that resolve reported
  issues, and some serial driver fixes as well (including the
  much-reported imx driver problem)

  All of these have been in linux-next with no reported problems"

* tag 'tty-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  drivers/tty: require read access for controlling terminal
  serial: 8250: add uart_config entry for PORT_RT2880
  tty: fix data race on tty_buffer.commit
  tty: fix data race in tty_buffer_flush
  tty: fix data race in flush_to_ldisc
  tty: fix stall caused by missing memory barrier in drivers/tty/n_tty.c
  serial: atmel: fix error path of probe function
  tty: don't leak cdev in tty_cdev_add()
  Revert "serial: imx: remove unbalanced clk_prepare"
2015-10-10 11:09:55 -07:00
Linus Torvalds
91dbc047e9 Staging fixes for 4.3-rc5
Here are two tiny staging tree fixes for 4.3-rc5.
 
 One fixes the broken speakup subsystem as reported by a user, and the
 other removes an entry in the MAINTAINERS file for a developer that
 doesn't want to be listed anymore.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging fixes from Greg KH:
 "Here are two tiny staging tree fixes for 4.3-rc5.

  One fixes the broken speakup subsystem as reported by a user, and the
  other removes an entry in the MAINTAINERS file for a developer that
  doesn't want to be listed anymore"

* tag 'staging-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: speakup: fix speakup-r regression
  MAINTAINERS: Remove myself as nvec co-maintainer
2015-10-10 11:03:31 -07:00
Linus Torvalds
ef19df60c9 Char/Misc driver fixes for 4.3-rc5
Here are some small fixes for some misc drivers that resolve some
 reported issues.  All of these have been linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some small fixes for some misc drivers that resolve some
  reported issues.  All of these have been linux-next for a while"

* tag 'char-misc-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  mcb: Fix error handling in mcb_pci_probe()
  mei: hbm: fix error in state check logic
  nvmem: sunxi: Check for memory allocation failure
  nvmem: core: Fix memory leak in nvmem_cell_write
  nvmem: core: Handle shift bits in-place if cell->nbits is non-zero
  nvmem: core: fix the out-of-range leak in read/write()
2015-10-10 10:58:27 -07:00
Linus Torvalds
bbecce8d76 Merge git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:

 - MIPS didn't define the new ioremap_uc.  Defined it as an alias for
   ioremap_uncached.

 - Replace workaround for MIPS16 build issue with a correct one.

* git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: Define ioremap_uc
  MIPS: UAPI: Ignore __arch_swab{16,32,64} when using MIPS16
  Revert "MIPS: UAPI: Fix unrecognized opcode WSBH/DSBH/DSHD when using MIPS16."
2015-10-10 10:51:55 -07:00
Linus Torvalds
1d8a12d1de Merge branch 'stable/for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb
Pull swiotlb fixlet from Konrad Rzeszutek Wilk:
 "Enable the SWIOTLB under 32-bit PAE kernels.

  Nowadays most distros enable this due to CONFIG_HYPERVISOR|XEN=y which
  select SWIOTLB.  But for those that are not interested in
  virtualization and wanting to use 32-bit PAE kernels and wanting to
  have working DMA operations - this configures it for them"

* 'stable/for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb:
  swiotlb: Enable it under x86 PAE
2015-10-10 10:31:13 -07:00
Trond Myklebust
daf3761c9f namei: results of d_is_negative() should be checked after dentry revalidation
Leandro Awa writes:
 "After switching to version 4.1.6, our parallelized and distributed
  workflows now fail consistently with errors of the form:

  T34: ./regex.c:39:22: error: config.h: No such file or directory

  From our 'git bisect' testing, the following commit appears to be the
  possible cause of the behavior we've been seeing: commit 766c4cbfac"

Al Viro says:
 "What happens is that 766c4cbfac got the things subtly wrong.

  We used to treat d_is_negative() after lookup_fast() as "fall with
  ENOENT".  That was wrong - checking ->d_flags outside of ->d_seq
  protection is unreliable and failing with hard error on what should've
  fallen back to non-RCU pathname resolution is a bug.

  Unfortunately, we'd pulled the test too far up and ran afoul of
  another kind of staleness.  The dentry might have been absolutely
  stable from the RCU point of view (and we might be on UP, etc), but
  stale from the remote fs point of view.  If ->d_revalidate() returns
  "it's actually stale", dentry gets thrown away and the original code
  wouldn't even have looked at its ->d_flags.

  What we need is to check ->d_flags where 766c4cbfac does (prior to
  ->d_seq validation) but only use the result in cases where we do not
  discard this dentry outright"

Reported-by: Leandro Awa <lawa@nvidia.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=104911
Fixes: 766c4cbfac ("namei: d_is_negative() should be checked...")
Tested-by: Leandro Awa <lawa@nvidia.com>
Cc: stable@vger.kernel.org # v4.1+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-10-10 10:17:27 -07:00