Commit graph

575,883 commits

Author SHA1 Message Date
Arnd Bergmann
5530f85171 mvebu fixes for 4.4 (part 1)
- Fix QNAP TS219 power-off in dts
 - Fix legacy get_irqnr_and_base for dove and orion5x
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iEYEABECAAYFAlZXby8ACgkQCwYYjhRyO9WVEACeJmILyNwnLvuKiz438oUUIVNl
 fJgAoJmoowxW96hdIA/KohktJhnN/9Mx
 =9igy
 -----END PGP SIGNATURE-----

Merge tag 'mvebu-fixes-4.4-1' of git://git.infradead.org/linux-mvebu into fixes

Merge "mvebu fixes for 4.4 (part 1)" from Jason Cooper:

- Fix QNAP TS219 power-off in dts
- Fix legacy get_irqnr_and_base for dove and orion5x

* tag 'mvebu-fixes-4.4-1' of git://git.infradead.org/linux-mvebu:
  ARM: orion5x: Fix legacy get_irqnr_and_base
  ARM: dove: Fix legacy get_irqnr_and_base
  ARM: dts: Kirkwood: Fix QNAP TS219 power-off
2015-11-27 17:28:41 +01:00
Arnd Bergmann
97a586d2e3 Renesas ARM Based SoC Fixes for v4.4
* r8a7793 SoC: Annotate r8a7793_boards_compat_dt with __initconst
   Aside from being correct this builds that otherwise
   fail with section mismatch errors.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJWV6uiAAoJENfPZGlqN0++oPUP/3NzM25jd+IUnr5+7cZuDSdY
 8/7Bk+C0iZzf3//YLG5VZWpxzpV6wEe6hpTKkCJwSZpd9QMFpGiiNkUZArLMEjl5
 viXPwkFhxS33HsPtl564UahPW4FPEax2i/s33WDcjN9xi7YjTXMxSbPXnwowUzET
 EuUwr7/HQuRsIWfh8BuKNilE0R2zH6pAv3Q/c2ql2dd0OXp8I+Hkv3gNYZMg4qMS
 ZvVfAKbdbpBsFZSzTXFIaFUkPDj/gMiMnh/yy2cGFrFjUz1HNZsS0zUds/UWE3F9
 njZtuY+vYCpxCBupIlnONej1Yy8/8AIU4IqPUQpz/KphsyXLjqCyW+Knuu5ISVN9
 HTdckAxeTulOTiEygE5Ro5YWRPBfp3/sNOQ06gD5Ce2wMH9btMRzE4aMlvQpyyKD
 NGnM4hVu+vClN2O5ftr3UCz+BXKuD8JlBGisnpwRHZc8WB8vYp7KgE3qU4Fs6HXa
 m+GIYoJ3BL6FtsGaB9FyzlflDLm+Ri5W9/e/aItWkxdKWIV4Gto6fym0aewbknyf
 2Gaje4++y/+fiWqPp4cmNknLpeb9fsVqUP+O4UH81ZPeYE9YSvWhLVXatDkfPgrK
 IrWz3S7PKniVsYe0cl4VRkM3oNDdELuMGbkNWlYkVIVUtrjRz6AnSHDEAk7TnnzQ
 RoLwIrnkF3FDchATYxrQ
 =8Y8F
 -----END PGP SIGNATURE-----

Merge tag 'renesas-fixes-for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes

Merge "Renesas ARM Based SoC Fixes for v4.4" from Simon Horman:

* r8a7793 SoC: Annotate r8a7793_boards_compat_dt with __initconst
  Aside from being correct this builds that otherwise
  fail with section mismatch errors.

* tag 'renesas-fixes-for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: r8a7793: proper constness with __initconst
2015-11-27 17:28:10 +01:00
Jiri Olsa
9bdcede563 perf test: 'unwind' test should create kernel maps
The 'perf test unwind' is failing because it forgot to create the kernel
maps, fix it.

After the patch:

  # perf test unwind
  40: Test dwarf unwind         : Ok

Reported-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20151127082121.GA24503@krava.brq.redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-27 13:14:26 -03:00
Michael Petlan
c4e079494f perf buildid-list: Show running kernel build id fix
The --kernel option of perf buildid-list tool should show the running
kernel buildid.  The functionality has been lost during other changes of
the related code.

The build_id__sprintf() function should return length of the build-id
string,  but it was the length of the build-id raw data instead. Due to
that, some return value checking caused that the final string was not
printed out.

With this patch the build_id__sprintf() returns the correct value, so
the --kernel option works again.

Before:

	# perf buildid-list --kernel
	#

After:

	# perf buildid-list --kernel
	972c1edab5bdc06cc224af45d510af662a3c6972
	#

Signed-off-by: Michael Petlan <mpetlan@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
LPU-Reference: 1448632089.24573.114.camel@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-27 12:24:46 -03:00
Rafael J. Wysocki
f28a1b0df7 Merge branches 'pm-cpufreq' and 'acpi-cppc'
* pm-cpufreq:
  intel_pstate: Fix "performance" mode behavior with HWP enabled
  cpufreq: SCPI: Depend on SCPI clk driver
  cpufreq: intel_pstate: Fix limits->max_perf rounding error
  cpufreq: intel_pstate: Fix limits->max_policy_pct rounding error
  cpufreq: Always remove sysfs cpuX/cpufreq link on ->remove_dev()

* acpi-cppc:
  cpufreq: CPPC: Initialize and check CPUFreq CPU co-ord type correctly
2015-11-27 16:23:59 +01:00
Takashi Iwai
8ae743e82f ALSA: hda - Skip ELD notification during system suspend
The recent addition of ELD notifier for Intel HDMI/DP codec may lead
the bad codec connection found as kernel messages like below:
 Suspending console(s) (use no_console_suspend to debug)
 hdmi_present_sense: snd_hda_codec_hdmi hdaudioC0D2: HDMI status: Codec=2 Pin=6 Presence_Detect=1 ELD_Valid=1
 snd_hda_intel 0000:00:1f.3: spurious response 0x0:0x2, last cmd=0x206f2e08
 snd_hda_intel 0000:00:1f.3: spurious response 0x0:0x2, last cmd=0x206f2e08
 ....
  snd_hda_codec_hdmi hdaudioC0D2: HDMI: ELD buf size is 0, force 128
  snd_hda_intel 0000:00:1f.3: azx_get_response timeout, switching to polling mode: last cmd=0x206f2f00
 snd_hda_intel 0000:00:1f.3: No response from codec, disabling MSI: last cmd=0x206f2f00
 snd_hda_intel 0000:00:1f.3: azx_get_response timeout, switching to single_cmd mode: last cmd=0x206f2f00
 azx_single_wait_for_response: 42 callbacks suppressed

This seems appearing when the sound driver went to suspend before i915
driver.  Then i915 driver disables HDMI/DP audio bit and calls the
registered notifier, and the HDA codec tries to handle it as a
hot(un)plug.  But since the driver is already in the suspended state,
it fails miserably.

As this is a sort of spurious wakeup, it can be ignored safely, as
long as it's delivered during the system suspend.  OTOH, if a
notification comes during the runtime suspend, the situation is
different: we need to wake up.  But during the system suspend, such a
notification can't be the reason for a wakeup.

This patch addresses it by a simple check of the current sound card
status.  The skipped notification doesn't matter because the HDA
driver will check the plugged status forcibly at the resume in
return.

Then, why the card status, not a runtime PM status or else?  The HDA
controller driver is supposed to set the card status to D3 at the
system suspend but not at the runtime suspend.  So we can see it as a
flag that is set only for the system suspend.  Admittedly, it's a bit
ugly, but it should work well for now.

Reported-and-tested-by: "Zhang, Xiong Y" <xiong.y.zhang@intel.com>
Fixes: 25adc137c5 ('ALSA: hda - Wake the codec up on pin/ELD notify events')
Cc: <stable@vger.kernel.org> # v4.3+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-11-27 14:23:00 +01:00
Alexander Kuleshov
c012a79d0c crypto: cryptod - use crypto_skcipher_type() for getting skcipher type
The <linux/crypto.h> provides inline function - crypto_skcipher_type().
Let's use it in the cryptd_alloc_ablkcipher() instead of direct calculation.

Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-11-27 21:22:18 +08:00
Zain Wang
433cd2c617 crypto: rockchip - add crypto driver for rk3288
Crypto driver support:
     ecb(aes) cbc(aes) ecb(des) cbc(des) ecb(des3_ede) cbc(des3_ede)
You can alloc tags above in your case.

And other algorithms and platforms will be added later on.

Signed-off-by: Zain Wang <zain.wang@rock-chips.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-11-27 21:19:32 +08:00
Zain Wang
e81c1b4646 crypto: rockchip - add DT bindings documentation
Add DT bindings documentation for the rk3288 crypto drivers.

Signed-off-by: Zain Wang <zain.wang@rock-chips.com>
Acked-by: Rob Herring <robh@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-11-27 21:19:28 +08:00
Martin Sperl
77e8058810 spi: bugfix: spi_message.transfer_length does not get reset
When submitting an identical spi_message multiple times via spi_sync
the spi_message.frame_length does not get reset to 0 in __spi_validate
before adding up all spi_transfer.len resulting in
frame_length > actual_length on all but the first spi_sync call.

Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-11-27 12:55:22 +00:00
Takashi Iwai
3fb42daaf1 Merge branch 'for-linus' into for-next 2015-11-27 13:41:11 +01:00
Takashi Iwai
06a691e64b ASoC: Fixes for v4.4
Quite a large batch of fixes have come in since the merge window, mainly
 driver specific ones but there's a couple of core ones:
 
  - A fix for DAPM resume on active streams to ensure everything ends up
    cleanly in the right state.
  - Reset the DAPM cache when freeing widgets to fix a crash on driver
    remove and reload.
 
 The PM functions for nau8825 are new code which fix crashes on resume.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJWWE13AAoJECTWi3JdVIfQF+wH/3D0Asc5rVdU81cxaxdjgGxJ
 WUGUCJ+4D1HTtZQf8MouwFqMvDK+lOKiPkAzMdyk3NQG50S0XtMD8xM7JeglPZ1L
 U7ro6EfYqGmkMyqClVxWnJMBnGoTiLrAftFlIBFPaQ6FDdfMMlNcK2Y4hCs/t3y7
 A5T0LlqKdz++bKQRoq0zpiWWSnfoaEub25IaEB97k9sjlr9rRTR1UwHibHdm3JGg
 vzkqLTaH/zm1VgR70jH6XnQSN8KtIdrx/u2ZWJZVqfioMTMFYIboufcwDWqX4oNA
 vqcYjzfCyhDaMnVYpI+7ettHfXn3iBR3VykXIOI1uzM63N5f1IK7bOwPRxiMXAA=
 =CDO8
 -----END PGP SIGNATURE-----

Merge tag 'asoc-fix-v4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v4.4

Quite a large batch of fixes have come in since the merge window, mainly
driver specific ones but there's a couple of core ones:

 - A fix for DAPM resume on active streams to ensure everything ends up
   cleanly in the right state.
 - Reset the DAPM cache when freeing widgets to fix a crash on driver
   remove and reload.

The PM functions for nau8825 are new code which fix crashes on resume.
2015-11-27 13:40:20 +01:00
Kuninori Morimoto
5342dff232 ASoC: rsnd: tidyup semantics of rsnd_ssi_record_error()
rsnd_ssi_record_error() should recorde error, but it clears error too.
this patch fixes up semantic of rsnd_ssi_record_error that it records
error but doesn't clear error.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-11-27 12:38:53 +00:00
Kuninori Morimoto
8cc225f713 ASoC: rsnd: tidyup semantics of rsnd_src_record_error()
rsnd_src_error_record() should recorde error, but it clears error too.
this patch fixes up semantic of rsnd_src_error_record that it records
error but doesn't clear error.
And this patch renames
rsnd_src_error_clear()  to rsnd_src_status_clear()
rsnd_src_error_record() to rsnd_src_record_error()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-11-27 12:38:50 +00:00
Kuninori Morimoto
0719ecf7cb ASoC: rsnd: indicate register name for debug
Current rsnd driver is indicating how to use regmap debug method
on gen.c comment area.
regmap debug method indicates address and value, but rsnd driver is
using too many IPs (SSI/SSIU/SRC/CTU/MIX/DVC/CMD), and address.
Thus, we would like to know more useful information for debugging.
This patch indicates address name for debugging.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-11-27 12:38:50 +00:00
Milo Kim
eaea7d2712 regulator: lm363x: add LM363x regulator binding information
This binding describes LM3631 and LM3632 regulator properties.

Signed-off-by: Milo Kim <milo.kim@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-11-27 12:37:31 +00:00
Milo Kim
3a8d1a73a0 regulator: add LM363X driver
LM363X regulator driver supports LM3631 and LM3632.
LM3631 has 5 regulators. LM3632 provides 3 regulators.
One boost output and LDOs are used for the display module.
Boost voltage is configurable but always on.
Supported operations for LDOs are enabled/disabled and voltage change.

Two LDOs of LM3632 can be controlled by external pins.
Those are configured through the DT properties.

Signed-off-by: Milo Kim <milo.kim@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-11-27 12:37:26 +00:00
Charles Keepax
04d1300fd3 ASoC: wm_adsp: Expand the list of available firmwares
Expand the list of available firmware names to include a good selection
of generic uses for the DSP cores.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-11-27 12:23:40 +00:00
Rasmus Villemoes
e49a449b86 x86/fpu: Put a few variables in .init.data
These are clearly just used during init.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1447424312-26400-1-git-send-email-linux@rasmusvillemoes.dk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-11-27 10:23:17 +01:00
Martin Schwidefsky
419123f900 s390/spinlock: do not yield to a CPU in udelay/mdelay
It does not make sense to try to relinquish the time slice with diag 0x9c
to a CPU in a state that does not allow to schedule the CPU. The scenario
where this can happen is a CPU waiting in udelay/mdelay while holding a
spin-lock.

Add a CIF bit to tag a CPU in enabled wait and use it to detect that the
yield of a CPU will not be successful and skip the diagnose call.

Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:18 +01:00
Jochen Schweflinghaus
c6f70d3b8a s390/sclp: add open for business support
Provide a user space interface and an enhancement to the sclp device driver
which allows to send an 'Open for Business' event from the operating system
to the Support Element. The 'Open for Business' event is used to signal the
Support Element that the operating system (or an application running on top
of it) is up and running.

Signed-off-by: Jochen Schweflinghaus <schwefel@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:18 +01:00
Heiko Carstens
9eb31be33c s390: remove is_32bit_task() helper
is_32bit_task() used to be helpful when we still had CONFIG_32BIT.
Since that is gone, it is nowadays identical to is_compat_task().
So remove it.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:17 +01:00
Michael Holzheu
b8eecf36a4 s390: add 'install' target to 'make help'
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:17 +01:00
Sascha Silbe
3f975df69d s390/sclp: Add VT220 support to early sclp console
When running under qemu with the default configuration (-nographic),
there is only a VT220 SCLP console, no line-mode SCLP console. Add
VT220 support to the early SCLP console so the user has a chance to
see critical error messages during early boot.

None of the existing users of _sclp_print_early() check the return
code. Instead of trying to come up with return code semantics when
printing to multiple consoles (any or all of which may fail), we just
drop the return code entirely.

Tested on z/VM (line mode console) and LPAR (VT220 and line mode
console). Tested on qemu/KVM with VT220 console and / or line mode
console.

Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:17 +01:00
Christian Borntraeger
561e103002 s390/dis: Fix printing of the register numbers
Since commit b006f19b05 ("lib/vsprintf.c: handle invalid format
specifiers more robustly") I get errors like
[...]
Krnl Code: 00000000004e2410: c00400000000        brcl 0,4e2410
Please remove unsupported %r in format string
[    8.179483] ------------[ cut here ]------------
[    8.179484] WARNING: at lib/vsprintf.c:1781

Turns out that our disassembler relied on %r not being used as format
string. Let's do the proper escaping of our decode buffers.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:16 +01:00
Hendrik Brueckner
155eeb66d2 s390/sclp_cpi: remove sclp_cpi module in favor of sysfs interface
Since commit c05ffc4f2b ("[S390] sclp: sysfs interface for
SCLP cpi"), which was made 2008 the user can specify a system
and sysplex name through the /sys/firmware/cpi interface.  In
addition to sysplex and system name, the user can also override
the system type and system version.

Because the syfs interface is easier to use and allows the
settings to be updated, the sclp_cpi module becomes obsolete
and can be removed.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:16 +01:00
Markus Elfring
a6e975c5f8 s390: Delete unnecessary checks before the function call "debug_unregister"
The debug_unregister() function performs also input parameter validation.
Thus the test around the calls is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:16 +01:00
Gerald Schaefer
69eea95c48 s390/pci_dma: fix DMA table corruption with > 4 TB main memory
DMA addresses returned from map_page() are calculated by using an iommu
bitmap plus a start_dma offset. The size of this bitmap is based on the main
memory size. If we have more than (4 TB - start_dma) main memory, the DMA
address calculation will also produce addresses > 4 TB. Such addresses
cannot be inserted in the 3-level DMA page table, instead the entries
modulo 4 TB will be overwritten.

Fix this by restricting the iommu bitmap size to (4 TB - start_dma).
Also set zdev->end_dma to the actual end address of the usable
range, instead of the theoretical maximum as reported by the hardware,
which fixes a sanity check in dma_map() and also the IOMMU API domain
geometry aperture calculation.

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:15 +01:00
David Hildenbrand
406123517b s390: get_user_pages_fast() might sleep
Let's annotate it correctly, so we directly get a warning if
we ever were to use it in atomic/preempt_disable/spinlock environment.

Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:15 +01:00
Martin Schwidefsky
db1c45154a s390/spinlock: avoid diagnose loop
The spinlock implementation calls the diagnose 0x9c / 0x44 immediately
if the SIGP sense running reported the target CPU as not running.

The diagnose 0x9c is a hint to the hypervisor to schedule the target
CPU in preference to the source CPU that issued the diagnose. It can
happen that on return from the diagnose the target CPU has not been
scheduled yet, e.g. if the target logical CPU is on another physical
CPU and the hypervisor did not want to migrate the logical CPU.

Avoid the immediate repeat of the diagnose instruction, instead do
the retry loop before the next invocation of diagnose 0x9c.

Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:15 +01:00
Martin Schwidefsky
1a2c5840ac s390/dump: cleanup CPU save area handling
Introduce save_area_alloc(), save_area_boot_cpu(), save_area_add_regs()
and save_area_add_vxrs to deal with storing the CPU state in case of a
system dump. Remove struct save_area and save_area_ext, and create a new
struct save_area as a local definition to arch/s390/kernel/crash_dump.c.
Copy each individual field from the hardware status area to the save area,
storing the minimum of required data.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:14 +01:00
Martin Schwidefsky
1a36a39e22 s390/dump: rework CPU register dump code
To collect the CPU registers of the crashed system allocated a single
page with memblock_alloc_base and use it as a copy buffer. Replace the
stop-and-store-status sigp with a store-status-at-address sigp in
smp_save_dump_cpus() and smp_store_status(). In both cases the target
CPU is already stopped and store-status-at-address avoids the detour
via the absolute zero page.

For kexec simplify s390_reset_system and call store_status() before
the prefix register of the boot CPU has been set to zero. Use STPX
to store the prefix register and remove dump_prefix_page.

Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:14 +01:00
Martin Schwidefsky
f08b841463 s390/dump: remove SAVE_AREA_BASE
Replace the SAVE_AREA_BASE offset calculations in reipl.S with the
assembler constant for the location of each register status area.

Use __LC_FPREGS_SAVE_AREA instead of SAVE_AREA_BASE in the three
remaining code locations and remove the definition of SAVE_AREA_BASE.

Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:14 +01:00
Martin Schwidefsky
d9a3a09af5 s390/kvm: remove dependency on struct save_area definition
Replace the offsets based on the struct area_area with the offset
constants from asm-offsets.c based on the struct _lowcore.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:13 +01:00
Martin Schwidefsky
019d6bec6d s390/zcore: simplify memcpy_hsa
Replace the three part copy logic int memcpy_hsa with a single loop
around sclp_sdias_copy with appropriate offset and size calculations,
and inline memcpy_hsa into memcpy_hsa_user and memcpy_hsa_kernel.

Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:13 +01:00
Martin Schwidefsky
df9694c797 s390/dump: streamline oldmem copy functions
Introduce two copy functions for the memory of the dumped system,
copy_oldmem_kernel() to copy to the virtual kernel address space
and copy_oldmem_user() to copy to user space.

Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:12 +01:00
Martin Schwidefsky
8a07dd02d7 s390/kdump: remove code to create ELF notes in the crashed system
The s390 architecture can store the CPU registers of the crashed system
after the kdump kernel has been started and this is the preferred way.
Remove the remaining code fragments that deal with storing CPU registers
while the crashed system is still active.

Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:12 +01:00
Martin Schwidefsky
ffa52d02c5 s390/zcore: remove /sys/kernel/debug/zcore/mem
New versions of the SCSI dumper use the /dev/vmcore interface instead
of zcore mem. Remove the outdated interface.

Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:12 +01:00
Martin Schwidefsky
bbfed511c2 s390/zcore: copy vector registers into the image data
The /sys/kernel/debug/zcore/mem interface delivers the memory of the
old system with the CPU registers stored to the assigned locations in
each prefix page.

For the vector registers the prefix page of each CPU has an address of
a 1024 byte save area at 0x11b0. But the /sys/kernel/debug/zcore/mem
interface fails copy the vector registers saved at boot of the zfcpdump
kernel into the dump image.

Copy the saved vector registers of a CPU to the outout buffer if the
memory area that is read via /sys/kernel/debug/zcore/mem intersects
with the vector register save area of this CPU.

Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:11 +01:00
Martin Schwidefsky
4c5b03b607 s390/zcore: remove invalid kfree in init_cpu_info
The extended save area for the boot CPU has been allocated by
smp_save_dump_cpus() with memblock_alloc() and may not be freed
with kfree().

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:24:11 +01:00
Ingo Tuchscherer
2bc53b8046 s390/zcrypt: Fix AP queue handling if queue is full
When the AP queue depth of requests was reached additional requests
have been ignored. These request are stuck in the request queue.

The AP queue handling now push the next waiting request into the
queue after fetching a previous serviced and finished reply.

Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-11-27 09:23:29 +01:00
Ingo Molnar
3f3b1a46bf perf/core improvements and fixes:
User visible:
 
 - Add 'vmlinux.debug' to the vmlinux seach path (Ekaterina Tumanova)
 
 - Do not show sample_(type|period) in the perf_event_attr dump when using
   -v with 'perf stat' (Jiri Olsa)
 
 - Display the WEIGHT sample bit, when set, in 'perf evlist -v' (Jiri Olsa)
 
 - Honour --hide-unresolved in 'report', will honour it as well in 'top'
   when --hide-unresolved gets supported in that tool (Namhyung Kim)
 
 - Fix freeze wit h--call-graph 'flat/folded' due to not properly
   reinitializing the callchain rb_tree (Namhyumg Kim)
 
 - Set dso->long_name when a module name is passed as a parameter
   to tools like 'perf probe' but the 'struct dso' associated to that module
   still doesn't have the full path for the module, just the '[name]' one
   obtained from /proc/modules (Wang Nan)
 
 - Fix anon_hugepage mmaps detection using scanf on /proc/PID/smaps (Yannick Brosseau)
 
 Infrastructure:
 
 - Add helper function for updating bpf maps elements (He Kuang)
 
 - Fix traceevents plugins build race (Jiri Olsa)
 
 - Add the $OUTPUT path prefix with 'fixdep' (Jiri Olsa)
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJWV20zAAoJENZQFvNTUqpAPbEQALjHQhbG/28sFR+YOVGnOUSL
 dI+VPMxE6KymFG5luzuVSmvYVatu1brhIk6SbzI57mRWPhqtDfQ+GCdyyPKvbb3a
 A3DrIWqaGaoq3SskYP/OvAwFydvYU+m9q4dNdByU3+M+ZpLfC3puTrc8gHrtyalU
 UEitn6Qjbr/LqIm1kCPg2OZJxbbpyxNtjPsaMcS6tkl/CyGg/kPGD6BbKsycHMvI
 EJanNhlir0AnqFn+JVW7CNSxWmnHr5py1Fhx3YKN6Nv5eQSTbOA0l35YaKNiz2Rj
 BjF+dy/TChp5WqimLbjHR1+RkaEsVviyZM+y0EeIa7FYvEo713Au3QcV98VzJ0Cq
 ERiLb9F4dZxQL85w11pZQG/BKy7WLf72k7QOKmHLJsC4Aq26zjYMo6FRj4k82hgN
 1uZEi5lRowKdjafvjD07yu0po+yUbol/AW6sopCaEkk03uby5qxXRwDLwjf7Iu16
 aWT6z0087k+oRpgVhBs0UyU6qY2X3dOUVO4+ZwfJ1eWEFuktAR4F945DUflC6QQV
 eU6j/VlVjxINaqxG2Z47lQRBVvckJ9Fq7hhLlY58cUPzlKmg2Ynac/AXwh8Y0CY2
 HhrSBRFkzPuZ7Hfp6musK4V1QipQnzOkzNX8tYIVDLntlSsfaPuwDt/rzbN4pjza
 VzpD3uaAKzJGS9IwA9Pi
 =0IPx
 -----END PGP SIGNATURE-----

Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

User visible changes:

  - Add 'vmlinux.debug' to the vmlinux search path (Ekaterina Tumanova)

  - Do not show sample_(type|period) in the perf_event_attr dump when using
    -v with 'perf stat' (Jiri Olsa)

  - Display the WEIGHT sample bit, when set, in 'perf evlist -v' (Jiri Olsa)

  - Honour --hide-unresolved in 'report', will honour it as well in 'top'
    when --hide-unresolved gets supported in that tool (Namhyung Kim)

  - Fix freeze wit h--call-graph 'flat/folded' due to not properly
    reinitializing the callchain rb_tree (Namhyumg Kim)

  - Set dso->long_name when a module name is passed as a parameter
    to tools like 'perf probe' but the 'struct dso' associated to that module
    still doesn't have the full path for the module, just the '[name]' one
    obtained from /proc/modules (Wang Nan)

  - Fix anon_hugepage mmaps detection using scanf on /proc/PID/smaps (Yannick Brosseau)

Infrastructure changes:

  - Add helper function for updating bpf maps elements (He Kuang)

  - Fix traceevents plugins build race (Jiri Olsa)

  - Add the $OUTPUT path prefix with 'fixdep' (Jiri Olsa)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-11-27 08:28:44 +01:00
Saurabh Sengar
5f01e6bc33 extcon: rt8973: Add IRQF_ONESHOT to interrupt flags
This patch adds IRQF_ONESHOT if no primary handler is provided for request
threaded irq.

Signed-off-by: Saurabh Sengar <saurabh.truth@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2015-11-27 10:42:00 +09:00
Arnd Bergmann
62f49ee26f cpufreq: s3c24xx: Do not mark s3c2410_plls_add as __init
s3c2410_plls_add is a device notifier that may be called at runtime and
is correctly not marked __init. However it calls s3c_plltab_register()
which is marked __init, and that triggers a build error when we are
checking for section mismatches:

WARNING: vmlinux.o(.text+0x195e0): Section mismatch in reference from the function s3c2410_plls_add() to the function .init.text:s3c_plltab_register()
The function s3c2410_plls_add() references
the function __init s3c_plltab_register().
This is often because s3c2410_plls_add lacks a __init
annotation or the annotation of s3c_plltab_register is wrong.

This removes the __init annotation from s3c2410_plls_add as well as the
__initdata section annotations from s3c2440_plls_12 and s3c2440_plls_169344,
which in turn are referenced from s3c2410_plls_add.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
2015-11-27 10:10:32 +09:00
Rasmus Villemoes
92529623d2 HID: debug: improve hid_debug_event()
The code in hid_debug_event() causes horrible code generation. First,
we do a strlen() call for every byte we copy (we're doing a store to
global memory, so gcc has no way of proving that strlen(buf) doesn't
change). Second, since both i, list->tail and HID_DEBUG_BUFSIZE have
signed type, the modulo computation has to take into account the
possibility that list->tail+i is negative, so it's not just a simple
and.

Fix the former by simply not doing strlen() at all (we have to load
buf[i] anyway, so testing it is almost free) and the latter by
changing i to unsigned. This cuts 29% (69 bytes) of the size of the
function.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-11-27 00:02:59 +01:00
Xu Cang
681c46b164 ext4: add "static" to ext4_seq_##name##_fops struct
to fix sparse warning, add static to ext4_seq_##name##_fops struct.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2015-11-26 15:52:24 -05:00
He Kuang
43798bf372 bpf tools: Add helper function for updating bpf maps elements
Add bpf_map_update_elem() helper function which calls the sys_bpf
syscall to update elements in bpf maps. Upcoming patches will use it to
adjust data in map through the perf command line.

Signed-off-by: He Kuang <hekuang@huawei.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1448372181-151723-4-git-send-email-wangnan0@huawei.com
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-26 17:21:24 -03:00
Al Viro
5a1c7f47da ext4: fix an endianness bug in ext4_encrypted_follow_link()
applying le32_to_cpu() to 16bit value is a bad idea...
    
Cc: stable@vger.kernel.org # v4.1+
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2015-11-26 15:20:50 -05:00
Al Viro
e2c9e0b28e ext4: fix an endianness bug in ext4_encrypted_zeroout()
ex->ee_block is not host-endian (note that accesses of other fields
of *ex right next to that line go through the helpers that do proper
conversion from little-endian to host-endian; it might make sense
to add similar for ->ee_block to avoid reintroducing that kind of
bugs...)

Cc: stable@vger.kernel.org # v4.1+
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2015-11-26 15:20:19 -05:00
Jiri Olsa
dcdd184b60 perf evlist: Display WEIGHT sample type bit
Adding WIEGHT bit_name call to display sample_type properly.

  $ perf evlist -v
  cpu/mem-loads/pp: ...SNIP... sample_type: IP|TID|TIME|ADDR|ID|CPU|DATA_SRC|WEIGHT ...

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1448465815-27404-2-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-26 16:54:00 -03:00