Commit graph

915365 commits

Author SHA1 Message Date
Yishai Hadas
30f2fe40c7 IB/mlx5: Introduce UAPIs to manage packet pacing
Introduce packet pacing uobject and its alloc and destroy
methods.

This uobject holds mlx5 packet pacing context according to the device
specification and enables managing packet pacing device entries that are
needed by DEVX applications.

Link: https://lore.kernel.org/r/20200219190518.200912-3-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-03-10 11:53:52 -03:00
Thomas Richter
e7950166e4 perf vendor events s390: Add new deflate counters for IBM z15
Add support for new deflate counters:

- Counter 247: cycles CPU spent obtaining access to Deflate unit
- Counter 252: cycles CPU is using Deflate unit
- Counter 264: Increments by one for every DEFLATE CONVERSION CALL
	    instruction executed.
- Counter 265: Increments by one for every DEFLATE CONVERSION CALL
	    instruction executed that ended in Condition Codes
	    0, 1 or 2.

Also adjust the some crypto counter description to latest documentation.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Link: http://lore.kernel.org/lkml/20200310142937.32045-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-10 11:40:21 -03:00
Mark Brown
36098a1db7
Merge series "spi: Add FSI-attached SPI controller driver" from Eddie James <eajames@linux.ibm.com>:
This series adds a dts binding and a driver for a new SPI controller that is
accessed over FSI bus.

Eddie James (2):
  dt-bindings: fsi: Add FSI2SPI bindings
  spi: Add FSI-attached SPI controller driver

 .../devicetree/bindings/fsi/ibm,fsi2spi.yaml  |  36 ++
 MAINTAINERS                                   |   7 +
 drivers/spi/Kconfig                           |   7 +
 drivers/spi/Makefile                          |   1 +
 drivers/spi/spi-fsi.c                         | 558 ++++++++++++++++++
 5 files changed, 609 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/fsi/ibm,fsi2spi.yaml
 create mode 100644 drivers/spi/spi-fsi.c

--
2.24.0
2020-03-10 14:30:58 +00:00
Qiujun Huang
7a86a419ff
spi: update the structure documentation
some members were not described in documentation.

Signed-off-by: Qiujun Huang <hqjagain@gmail.com>
Link: https://lore.kernel.org/r/1583774179-30736-1-git-send-email-hqjagain@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 14:30:57 +00:00
Geert Uytterhoeven
f3a14a3a4d
spi: rspi: Add support for active-high chip selects
All RSPI variants support setting the polarity of the SSL signal.
Advertize support for active-high chip selects, and configure polarity
according to the state of the flag.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20200309171537.21551-1-geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 14:30:56 +00:00
Johan Jonker
c6486eadb4
spi: rockchip: add compatible string for px30 rk3308 rk3328
The Rockchip spi binding is updated to yaml and new models
were added. The spi on px30,rk3308 and rk3328 are the same as
other Rockchip based SoCs, so add compatible string for it.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/20200309151004.7780-1-jbx6244@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 14:30:56 +00:00
Hillf Danton
aa202f1f56 workqueue: don't use wq_select_unbound_cpu() for bound works
wq_select_unbound_cpu() is designed for unbound workqueues only, but
it's wrongly called when using a bound workqueue too.

Fixing this ensures work queued to a bound workqueue with
cpu=WORK_CPU_UNBOUND always runs on the local CPU.

Before, that would happen only if wq_unbound_cpumask happened to include
it (likely almost always the case), or was empty, or we got lucky with
forced round-robin placement.  So restricting
/sys/devices/virtual/workqueue/cpumask to a small subset of a machine's
CPUs would cause some bound work items to run unexpectedly there.

Fixes: ef55718044 ("workqueue: schedule WORK_CPU_UNBOUND work on wq_unbound_cpumask CPUs")
Cc: stable@vger.kernel.org # v4.5+
Signed-off-by: Hillf Danton <hdanton@sina.com>
[dj: massage changelog]
Signed-off-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Tejun Heo <tj@kernel.org>
2020-03-10 10:30:51 -04:00
Alexander Gordeev
fb83510295 s390/cpuinfo: add system topology information
This update adjusts /proc/cpuinfo format to meet some user level
programs expectations. It also makes the layout consistent with
x86 where CPU topology is presented as blocks of key-value pairs.

Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-10 15:16:26 +01:00
Sven Schnelle
0b38b5e1d0 s390: prevent leaking kernel address in BEAR
When userspace executes a syscall or gets interrupted,
BEAR contains a kernel address when returning to userspace.
This make it pretty easy to figure out where the kernel is
mapped even with KASLR enabled. To fix this, add lpswe to
lowcore and always execute it there, so userspace sees only
the lowcore address of lpswe. For this we have to extend
both critical_cleanup and the SWITCH_ASYNC macro to also check
for lpswe addresses in lowcore.

Fixes: b2d24b97b2 ("s390/kernel: add support for kernel address space layout randomization (KASLR)")
Cc: <stable@vger.kernel.org> # v5.2+
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-10 15:16:25 +01:00
Heiko Carstens
d2abfbe465 s390: enable bpf jit by default when not built as always-on
This is the s390 variant of commit 81c22041d9 ("bpf, x86, arm64:
Enable jit by default when not built as always-on").

Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-10 15:16:25 +01:00
Thomas Richter
d68d5d51dc s390/cpum_cf: Add new extended counters for IBM z15
Add CPU measurement counter facility event description for IBM z15.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-10 15:16:25 +01:00
Pierre Morel
035f212fa7 s390/pci: embedding hotplug_slot in zdev
Embedding the hotplug_slot in zdev structure allows to
greatly simplify the hotplug handling by eliminating
the handling of the slot_list.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-10 15:16:25 +01:00
Eddie James
bbb6b2f986
spi: Add FSI-attached SPI controller driver
There exists a set of SPI controllers on some POWER processors that may
be accessed through the FSI bus. Add a driver to traverse the FSI CFAM
engine that can access and drive the SPI controllers. This driver would
typically be used by a baseboard management controller (BMC).

The SPI controllers operate by means of programming a sequencing engine
which automatically manages the usual SPI protocol buses. The driver
programs each transfer into the sequencer as various operations
specifying the slave chip and shifting data in and out on the lines.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20200306194118.18581-3-eajames@linux.ibm.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 14:11:57 +00:00
Eddie James
1e7479df01
dt-bindings: fsi: Add FSI2SPI bindings
Add documentation for the FSI2SPI CFAM engine, which provides access to
a number of SPI controllers.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20200306194118.18581-2-eajames@linux.ibm.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 14:11:56 +00:00
Mark Brown
c23f044427
Merge series "ASoC: soc-pcm cleanup step6" from Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>:
Hi Mark

We are using plural form for for_each_xxx() macro.
But, for_each_rtd_codec/cpu_dai() are out of this rule.
1) - 7) are for it.
8) - 9) add new for_each_card_xxx() macros.

Kuninori Morimoto (9):
   1) ASoC: soc.h: add for_each_rtd_codecs/cpus_dai() macro
   2) ASoC: Intel: use for_each_rtd_codecs/cpus_dai() macro
   3) ASoC: mediatek: use for_each_rtd_codecs/cpus_dai() macro
   4) ASoC: meson: use for_each_rtd_codecs/cpus_dai() macro
   5) ASoC: qcom: use for_each_rtd_codecs/cpus_dai() macro
   6) ASoC: soc: use for_each_rtd_codecs/cpus_dai() macro
   7) ASoC: soc.h: remove non plural form for_each_xxx macro
   8) ASoC: soc-dapm: add for_each_card_dapms() macro
   9) ASoC: soc-dapm: add for_each_card_widgets() macro

 drivers/soundwire/qcom.c                      |   2 +-
 include/sound/soc.h                           |  28 ++--
 sound/soc/intel/boards/cml_rt1011_rt5682.c    |   2 +-
 sound/soc/intel/boards/kbl_da7219_max98927.c  |   4 +-
 sound/soc/intel/boards/kbl_rt5663_max98927.c  |   2 +-
 .../intel/boards/kbl_rt5663_rt5514_max98927.c |   2 +-
 .../mediatek/mt8173/mt8173-rt5650-rt5514.c    |   2 +-
 .../mediatek/mt8173/mt8173-rt5650-rt5676.c    |   2 +-
 sound/soc/mediatek/mt8173/mt8173-rt5650.c     |   2 +-
 .../mediatek/mt8183/mt8183-da7219-max98357.c  |   4 +-
 sound/soc/meson/axg-card.c                    |   2 +-
 sound/soc/meson/meson-card-utils.c            |   2 +-
 sound/soc/qcom/apq8016_sbc.c                  |   2 +-
 sound/soc/qcom/sdm845.c                       |   8 +-
 sound/soc/soc-core.c                          |  16 +--
 sound/soc/soc-dapm.c                          |  53 ++++----
 sound/soc/soc-pcm.c                           | 124 +++++++++---------
 sound/soc/soc-topology.c                      |   2 +-
 18 files changed, 134 insertions(+), 125 deletions(-)

--
2.17.1
2020-03-10 13:51:00 +00:00
Cezary Rojewski
a3b7343e3f
ASoC: SOF: Fix probe point getter
Firmware API changes which introduced 'num_elems' param in several probe
structs such as sof_ipc_probe_dma_add_params also impacted getter for
both, DMA and probe points. All struct handlers except for
sof_ipc_probe_info_params have been updated. Align said handler too to
calculate payload size correctly.

Fixes: f3b433e469 ("ASoC: SOF: Implement Probe IPC API")
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200309142124.29262-1-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 13:50:59 +00:00
Kuninori Morimoto
1459669263
ASoC: soc-dapm: add for_each_card_widgets() macro
To be more readable code, this patch adds
new for_each_card_widgets() macro, and replace existing code to it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/87r1y2goga.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 13:35:27 +00:00
Kuninori Morimoto
df817f8e71
ASoC: soc-dapm: add for_each_card_dapms() macro
To be more readable code, this patch adds
new for_each_card_dapms() macro, and replace existing code to it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/87sgiigogf.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 13:35:26 +00:00
Kuninori Morimoto
17e6dab501
ASoC: soc.h: remove non plural form for_each_xxx macro
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/87tv2ygogl.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 13:35:25 +00:00
Kuninori Morimoto
a4be4187b2
ASoC: soc: use for_each_rtd_codecs/cpus_dai() macro
This patch switch to use plural form macro.

	- for_each_rtd_codec_dai()
	+ for_each_rtd_codec_dais()

	- for_each_rtd_codec_dai_rollback()
	+ for_each_rtd_codec_dais_rollback()

	- for_each_rtd_cpu_dai()
	+ for_each_rtd_cpu_dais()

	- for_each_rtd_cpu_dai_rollback()
	+ for_each_rtd_cpu_dais_rollback()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/87v9negogr.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 13:35:24 +00:00
Kuninori Morimoto
c998ee30e4
ASoC: qcom: use for_each_rtd_codecs/cpus_dai() macro
This patch switch to use plural form macro.

	- for_each_rtd_codec_dai()
	+ for_each_rtd_codec_dais()

	- for_each_rtd_codec_dai_rollback()
	+ for_each_rtd_codec_dais_rollback()

	- for_each_rtd_cpu_dai()
	+ for_each_rtd_cpu_dais()

	- for_each_rtd_cpu_dai_rollback()
	+ for_each_rtd_cpu_dais_rollback()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/87wo7ugogy.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 13:35:23 +00:00
Kuninori Morimoto
b5c52f5801
ASoC: meson: use for_each_rtd_codecs/cpus_dai() macro
This patch switch to use plural form macro.

	- for_each_rtd_codec_dai()
	+ for_each_rtd_codec_dais()

	- for_each_rtd_codec_dai_rollback()
	+ for_each_rtd_codec_dais_rollback()

	- for_each_rtd_cpu_dai()
	+ for_each_rtd_cpu_dais()

	- for_each_rtd_cpu_dai_rollback()
	+ for_each_rtd_cpu_dais_rollback()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/87y2sagoh7.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 13:35:22 +00:00
Kuninori Morimoto
c865452023
ASoC: mediatek: use for_each_rtd_codecs/cpus_dai() macro
This patch switch to use plural form macro.

	- for_each_rtd_codec_dai()
	+ for_each_rtd_codec_dais()

	- for_each_rtd_codec_dai_rollback()
	+ for_each_rtd_codec_dais_rollback()

	- for_each_rtd_cpu_dai()
	+ for_each_rtd_cpu_dais()

	- for_each_rtd_cpu_dai_rollback()
	+ for_each_rtd_cpu_dais_rollback()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/87zhcqgohd.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 13:35:21 +00:00
Kuninori Morimoto
5dd1677c81
ASoC: Intel: use for_each_rtd_codecs/cpus_dai() macro
This patch switch to use plural form macro.

	- for_each_rtd_codec_dai()
	+ for_each_rtd_codec_dais()

	- for_each_rtd_codec_dai_rollback()
	+ for_each_rtd_codec_dais_rollback()

	- for_each_rtd_cpu_dai()
	+ for_each_rtd_cpu_dais()

	- for_each_rtd_cpu_dai_rollback()
	+ for_each_rtd_cpu_dais_rollback()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/871rq2i320.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 13:35:18 +00:00
Kuninori Morimoto
995cbc3ca1
ASoC: soc.h: add for_each_rtd_codecs/cpus_dai() macro
We are using plural form for for_each_xxx() macro.
But, for_each_rtd_codec/cpu_dai() are out of this rule.
This patch adds plural form macro.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/8736aii326.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 13:35:18 +00:00
Luca Coelho
da86cad0e0 MAINTAINERS: update web URL for iwlwifi
The current URL mentioned in iwlwifi's W entry is outdated and
currently pointing to a dead link.  Change it so that it points to the
correct Wiki page directly.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-03-10 15:34:28 +02:00
Kalle Valo
453bfc2d16 First batch of fixes intended for v5.6
* Fix a locking issue in time events handling;
 * A fix in rate-scaling;
 * Fix for a potential NULL pointer deref;
 * Enable antenna diversity in some devices that were erroneously not
   doing it;
 * Allow FW dumps to continue when the FW is stuck;
 * A fix in the HE capabilities handling;
 * Another fix for FW dumps where we were reading wrong addresses.
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Merge tag 'iwlwifi-for-kalle-2020-03-08' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-fixes

First batch of fixes intended for v5.6

* Fix a locking issue in time events handling;
* A fix in rate-scaling;
* Fix for a potential NULL pointer deref;
* Enable antenna diversity in some devices that were erroneously not
  doing it;
* Allow FW dumps to continue when the FW is stuck;
* A fix in the HE capabilities handling;
* Another fix for FW dumps where we were reading wrong addresses.
2020-03-10 15:33:24 +02:00
Filipe Laíns
8c9d734cdf HID: logitech-dj: add support for the static device in the Powerplay mat/receiver
The Logitech G Powerplay has a lightspeed receiver with a static HID++
device with ID 7 attached to it to. It is used to configure the led on
the mat. For this reason I increased the max number of devices.

Signed-off-by: Filipe Laíns <lains@archlinux.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2020-03-10 14:20:40 +01:00
Bart Van Assche
596444e757 null_blk: Add support for init_hctx() fault injection
This makes it possible to test the error path in blk_mq_realloc_hw_ctxs()
and also several error paths in null_blk.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Cc: Johannes Thumshirn <jth@kernel.org>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-10 07:09:59 -06:00
Bart Van Assche
9b03b71308 null_blk: Handle null_add_dev() failures properly
If null_add_dev() fails then null_del_dev() is called with a NULL argument.
Make null_del_dev() handle this scenario correctly. This patch fixes the
following KASAN complaint:

null-ptr-deref in null_del_dev+0x28/0x280 [null_blk]
Read of size 8 at addr 0000000000000000 by task find/1062

Call Trace:
 dump_stack+0xa5/0xe6
 __kasan_report.cold+0x65/0x99
 kasan_report+0x16/0x20
 __asan_load8+0x58/0x90
 null_del_dev+0x28/0x280 [null_blk]
 nullb_group_drop_item+0x7e/0xa0 [null_blk]
 client_drop_item+0x53/0x80 [configfs]
 configfs_rmdir+0x395/0x4e0 [configfs]
 vfs_rmdir+0xb6/0x220
 do_rmdir+0x238/0x2c0
 __x64_sys_unlinkat+0x75/0x90
 do_syscall_64+0x6f/0x2f0
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Cc: Johannes Thumshirn <jth@kernel.org>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-10 07:09:59 -06:00
Bart Van Assche
2004bfdef9 null_blk: Fix the null_add_dev() error path
If null_add_dev() fails, clear dev->nullb.

This patch fixes the following KASAN complaint:

BUG: KASAN: use-after-free in nullb_device_submit_queues_store+0xcf/0x160 [null_blk]
Read of size 8 at addr ffff88803280fc30 by task check/8409

Call Trace:
 dump_stack+0xa5/0xe6
 print_address_description.constprop.0+0x26/0x260
 __kasan_report.cold+0x7b/0x99
 kasan_report+0x16/0x20
 __asan_load8+0x58/0x90
 nullb_device_submit_queues_store+0xcf/0x160 [null_blk]
 configfs_write_file+0x1c4/0x250 [configfs]
 __vfs_write+0x4c/0x90
 vfs_write+0x145/0x2c0
 ksys_write+0xd7/0x180
 __x64_sys_write+0x47/0x50
 do_syscall_64+0x6f/0x2f0
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7ff370926317
Code: 64 89 02 48 c7 c0 ff ff ff ff eb bb 0f 1f 80 00 00 00 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
RSP: 002b:00007fff2dd2da48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff370926317
RDX: 0000000000000002 RSI: 0000559437ef23f0 RDI: 0000000000000001
RBP: 0000559437ef23f0 R08: 000000000000000a R09: 0000000000000001
R10: 0000559436703471 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ff370a006a0 R14: 00007ff370a014a0 R15: 00007ff370a008a0

Allocated by task 8409:
 save_stack+0x23/0x90
 __kasan_kmalloc.constprop.0+0xcf/0xe0
 kasan_kmalloc+0xd/0x10
 kmem_cache_alloc_node_trace+0x129/0x4c0
 null_add_dev+0x24a/0xe90 [null_blk]
 nullb_device_power_store+0x1b6/0x270 [null_blk]
 configfs_write_file+0x1c4/0x250 [configfs]
 __vfs_write+0x4c/0x90
 vfs_write+0x145/0x2c0
 ksys_write+0xd7/0x180
 __x64_sys_write+0x47/0x50
 do_syscall_64+0x6f/0x2f0
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 8409:
 save_stack+0x23/0x90
 __kasan_slab_free+0x112/0x160
 kasan_slab_free+0x12/0x20
 kfree+0xdf/0x250
 null_add_dev+0xaf3/0xe90 [null_blk]
 nullb_device_power_store+0x1b6/0x270 [null_blk]
 configfs_write_file+0x1c4/0x250 [configfs]
 __vfs_write+0x4c/0x90
 vfs_write+0x145/0x2c0
 ksys_write+0xd7/0x180
 __x64_sys_write+0x47/0x50
 do_syscall_64+0x6f/0x2f0
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Fixes: 2984c8684f ("nullb: factor disk parameters")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Cc: Johannes Thumshirn <jth@kernel.org>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-10 07:09:59 -06:00
Bart Van Assche
78b10be23d null_blk: Fix changing the number of hardware queues
Instead of initializing null_blk hardware queues explicitly after the
request queue has been created, provide .init_hctx() and .exit_hctx()
callback functions. The latter functions are not only called during
request queue allocation but also when the number of hardware queues
changes. Allocate nr_cpu_ids queues during initialization to support
increasing the number of hardware queues above the initial hardware
queue count.

This change fixes increasing the number of hardware queues above the
initial number of hardware queues and also keeps nullb->nr_queues in
sync with the number of hardware queues.

Fixes: 45919fbfe1 ("null_blk: Enable modifying 'submit_queues' after an instance has been configured")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Cc: Johannes Thumshirn <jth@kernel.org>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-10 07:09:59 -06:00
Bart Van Assche
b9853b4d6f null_blk: Suppress an UBSAN complaint triggered when setting 'memory_backed'
Although it is not clear to me why UBSAN complains when 'memory_backed'
is set, this patch suppresses the UBSAN complaint that is triggered when
setting that configfs attribute.

UBSAN: Undefined behaviour in drivers/block/null_blk_main.c:327:1
load of value 16 is not a valid value for type '_Bool'
CPU: 2 PID: 8396 Comm: check Not tainted 5.6.0-rc1-dbg+ #14
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
Call Trace:
 dump_stack+0xa5/0xe6
 ubsan_epilogue+0x9/0x26
 __ubsan_handle_load_invalid_value+0x6d/0x76
 nullb_device_memory_backed_store.cold+0x2c/0x38 [null_blk]
 configfs_write_file+0x1c4/0x250 [configfs]
 __vfs_write+0x4c/0x90
 vfs_write+0x145/0x2c0
 ksys_write+0xd7/0x180
 __x64_sys_write+0x47/0x50
 do_syscall_64+0x6f/0x2f0
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Cc: Johannes Thumshirn <jth@kernel.org>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-10 07:09:59 -06:00
Bart Van Assche
d0930bb8f4 blk-mq: Fix a recently introduced regression in blk_mq_realloc_hw_ctxs()
q->nr_hw_queues must only be updated once it is known that
blk_mq_realloc_hw_ctxs() has succeeded. Otherwise it can happen that
reallocation fails and that q->nr_hw_queues is larger than the number of
allocated hardware queues. This patch fixes the following crash if
increasing the number of hardware queues fails:

BUG: KASAN: null-ptr-deref in blk_mq_map_swqueue+0x775/0x810
Write of size 8 at addr 0000000000000118 by task check/977

CPU: 3 PID: 977 Comm: check Not tainted 5.6.0-rc1-dbg+ #8
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
Call Trace:
 dump_stack+0xa5/0xe6
 __kasan_report.cold+0x65/0x99
 kasan_report+0x16/0x20
 check_memory_region+0x140/0x1b0
 memset+0x28/0x40
 blk_mq_map_swqueue+0x775/0x810
 blk_mq_update_nr_hw_queues+0x468/0x710
 nullb_device_submit_queues_store+0xf7/0x1a0 [null_blk]
 configfs_write_file+0x1c4/0x250 [configfs]
 __vfs_write+0x4c/0x90
 vfs_write+0x145/0x2c0
 ksys_write+0xd7/0x180
 __x64_sys_write+0x47/0x50
 do_syscall_64+0x6f/0x2f0
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Fixes: ac0d6b926e ("block: Reduce the amount of memory required per request queue")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Cc: Keith Busch <kbusch@kernel.org>
Cc: Johannes Thumshirn <jth@kernel.org>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-10 07:09:59 -06:00
Bart Van Assche
6e66b49392 blk-mq: Keep set->nr_hw_queues and set->map[].nr_queues in sync
blk_mq_map_queues() and multiple .map_queues() implementations expect that
set->map[HCTX_TYPE_DEFAULT].nr_queues is set to the number of hardware
queues. Hence set .nr_queues before calling these functions. This patch
fixes the following kernel warning:

WARNING: CPU: 0 PID: 2501 at include/linux/cpumask.h:137
Call Trace:
 blk_mq_run_hw_queue+0x19d/0x350 block/blk-mq.c:1508
 blk_mq_run_hw_queues+0x112/0x1a0 block/blk-mq.c:1525
 blk_mq_requeue_work+0x502/0x780 block/blk-mq.c:775
 process_one_work+0x9af/0x1740 kernel/workqueue.c:2269
 worker_thread+0x98/0xe40 kernel/workqueue.c:2415
 kthread+0x361/0x430 kernel/kthread.c:255

Fixes: ed76e329d7 ("blk-mq: abstract out queue map") # v5.0
Reported-by: syzbot+d44e1b26ce5c3e77458d@syzkaller.appspotmail.com
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Cc: Johannes Thumshirn <jth@kernel.org>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-10 07:09:59 -06:00
Bart Van Assche
2dd209f00f blk-mq: Fix a comment in include/linux/blk-mq.h
The 'hctx_list' member of struct blk_mq_hw_ctx is not a list head but
instead an entry in q->unused_hctx_list. Fix the comment above this
struct member.

Fixes: d386732bc1 ("blk-mq: fill header with kernel-doc")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Cc: André Almeida <andrealmeid@collabora.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-10 07:09:59 -06:00
Pierre-Louis Bossart
c8061689ff
ASoC: Intel: skl_nau88l25_ssm4567: disable route checks
Deal with incomplete topologies, this patch restores sound on user
devices.

Fixes: daa480bde6 ("ASoC: soc-core: tidyup for snd_soc_dapm_add_routes()")
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Tested-by: ojab // <ojab@ojab.ru>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/20200309192744.18380-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 13:02:30 +00:00
Pierre-Louis Bossart
a22ae72b86
ASoC: soc-core: disable route checks for legacy devices
v5.4 changes in soc-core tightened the checks on soc_dapm_add_routes,
which results in the ASoC card probe failing.

Introduce a flag to be set in machine drivers to prevent the probe
from stopping in case of incomplete topologies or missing routes. This
flag is for backwards compatibility only and shall not be used for
newer machine drivers.

Example with an HDaudio card with a bad topology:

[ 236.177898] skl_hda_dsp_generic skl_hda_dsp_generic: ASoC: Failed to
add route iDisp1_out -> direct -> iDisp1 Tx

[ 236.177902] skl_hda_dsp_generic skl_hda_dsp_generic:
snd_soc_bind_card: snd_soc_dapm_add_routes failed: -19

with the disable_route_checks set:

[ 64.031657] skl_hda_dsp_generic skl_hda_dsp_generic: ASoC: Failed to
add route iDisp1_out -> direct -> iDisp1 Tx

[ 64.031661] skl_hda_dsp_generic skl_hda_dsp_generic:
snd_soc_bind_card: disable_route_checks set, ignoring errors on
add_routes

Fixes: daa480bde6 ("ASoC: soc-core: tidyup for snd_soc_dapm_add_routes()")
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/20200309192744.18380-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-10 13:02:30 +00:00
Thomas Gleixner
810f80a61b x86/entry/64: Trace irqflags unconditionally as ON when returning to user space
User space cannot disable interrupts any longer so trace return to user space
unconditionally as IRQS_ON.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Link: https://lkml.kernel.org/r/20200308222609.314596327@linutronix.de
2020-03-10 13:56:32 +01:00
Thomas Gleixner
74a4882d72 x86/entry/32: Remove unused label restore_nocheck
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Link: https://lkml.kernel.org/r/20200308222609.219366430@linutronix.de
2020-03-10 13:56:32 +01:00
Rishi Gupta
67a95c2146 HID: mcp2221: add usb to i2c-smbus host bridge
MCP2221 is a USB HID to I2C/SMbus host bridge device. This
commit implements i2c and smbus host adapter support. 7-bit
address and i2c multi-message transaction is also supported.

Signed-off-by: Rishi Gupta <gupt21@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2020-03-10 12:37:42 +01:00
Hamish Martin
3747cd2efe i2c: gpio: suppress error on probe defer
If a GPIO we are trying to use is not available and we are deferring
the probe, don't output an error message.
This seems to have been the intent of commit 05c7477885
("i2c: gpio: Add support for named gpios in DT") but the error was
still output due to not checking the updated 'retdesc'.

Fixes: 05c7477885 ("i2c: gpio: Add support for named gpios in DT")
Signed-off-by: Hamish Martin <hamish.martin@alliedtelesis.co.nz>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2020-03-10 12:31:55 +01:00
Wolfram Sang
bcf3588d8e macintosh: windfarm: fix MODINFO regression
Commit af503716ac made sure OF devices get an OF style modalias with
I2C events. It assumed all in-tree users were converted, yet it missed
some Macintosh drivers.

Add an OF module device table for all windfarm drivers to make them
automatically load again.

Fixes: af503716ac ("i2c: core: report OF style module alias for devices registered via OF")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=199471
Reported-by: Erhard Furtner <erhard_f@mailbox.org>
Tested-by: Erhard Furtner <erhard_f@mailbox.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org # v4.17+
2020-03-10 12:30:59 +01:00
Greg Kroah-Hartman
590a95e418 staging: exfat: remove staging version of exfat filesystem
Now that there is a "real" solution for exfat in the vfs tree queued up
to be merged in 5.7-rc1 the "old" exfat code in staging can be removed.

Many thanks to Valdis for doing the work to get this into the tree in
the first place, it was greatly appreciated.

Acked-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Cc: Pali Rohár <pali@kernel.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Namjae Jeon <namjae.jeon@samsung.com>
Cc: Sungjong Seo <sj1557.seo@samsung.com>
Cc: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20200310105421.GA2810679@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-10 12:30:34 +01:00
Wolfram Sang
a47070aac9 i2c: smbus: remove outdated references to irq level triggers
IRQ levels are now handled within the IRQ core. Remove the forgotten
references from the documentation.

Fixes: 9b9f2b8bc2 ("i2c: i2c-smbus: Use threaded irq for smbalert")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2020-03-10 12:20:04 +01:00
Wolfram Sang
ed68052226 i2c: convert SMBus alert setup function to return an ERRPTR
Only few drivers use this call, so drivers and I2C core are converted at
once with this patch. By simply using i2c_new_client_device() instead of
i2c_new_device(), we easily can return an ERRPTR for this function as
well. To make out of tree users aware that something changed, the
function is renamed to i2c_new_smbus_alert_device().

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2020-03-10 12:19:52 +01:00
Alain Volmat
0f82056407 i2c: stm32f7: add a new st, stm32mp15-i2c compatible
Add a new stm32mp15 specific compatible to handle FastMode+
registers handling which is different on the stm32mp15 compared
to the stm32f7 or stm32h7.
Indeed, on the stm32mp15, the FastMode+ set and clear registers
are separated while on the other platforms (F7 or H7) the control
is done in a unique register.

Signed-off-by: Alain Volmat <alain.volmat@st.com>
Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2020-03-10 12:16:51 +01:00
Alain Volmat
3347ea9baf i2c: stm32f7: disable/restore Fast Mode Plus bits in low power modes
Defer the initial enabling of the Fast Mode Plus bits after the
stm32f7_i2c_setup_timing call in probe function in order to avoid
enabling them if speed is downgraded.
Clear & restore the Fast Mode Plus bits in the suspend/resume
handlers of the driver.

Signed-off-by: Alain Volmat <alain.volmat@st.com>
Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2020-03-10 12:16:47 +01:00
Chris Wilson
798fa870ab drm/i915: Improve the start alignment of bonded pairs
Always wait on the start of the signaler request to reduce the problem
of dequeueing the bonded pair too early -- we want both payloads to
start at the same time, with no latency, and yet still allow others to
make full use of the slack in the system. This reduce the amount of time
we spend waiting on the semaphore used to synchronise the start of the
bonded payload.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200306133852.3420322-3-chris@chris-wilson.co.uk
2020-03-10 11:13:33 +00:00
Akeem G Abodunrin
0d1650fa24 drm/mm: Remove redundant assignment in drm_mm_reserve_node
In Pete Goodliffe words, "You can improve a system by adding new code. You
can also improve a system by removing code" - In this case, commit
"202b52b7fb" added new code to initialize end of the node. So, there
is no need for duplicated initialization, and this patch simply removes it.

Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20200309151156.25040-1-akeem.g.abodunrin@intel.com
2020-03-10 10:25:07 +00:00