Commit Graph

2256 Commits

Author SHA1 Message Date
Hans de Goede
54e3a3a152
ASoC: rt5651: Remove unused rt5651_platform_data
There are no in tree users of platform-data for the rt5651 codec driver,
so lets remove support for it.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-03-01 17:32:22 +00:00
Linus Torvalds
7590e37bda ASoC: Updates for v4.16
With the merge window having been delayed for another week here's
 another batch of updates that came in during that week.  There's a few
 important fixes in here, mainly a fix for I/O on a number of devices
 caused by some of the component rework and a fix for a potential issue
 if more than one component in a link provides compressed operations.
 The I/O fixes are particularly important as the problem causes a power
 regression on a number of OMAP platforms.
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Merge tag 'asoc-v4.16-5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound

Pull more ASoC updates from Mark Brown:
 "With the merge window having been delayed for another week here's
  another batch of updates that came in during that week.

  There's a few important fixes in here, mainly a fix for I/O on a
  number of devices caused by some of the component rework and a fix for
  a potential issue if more than one component in a link provides
  compressed operations. The I/O fixes are particularly important as the
  problem causes a power regression on a number of OMAP platforms"

* tag 'asoc-v4.16-5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound: (22 commits)
  ASoC: stm32: add of dependency for stm32 drivers
  ASoC: mt8173-rt5650: fix child-node lookup
  ASoC: dapm: fix debugfs read using path->connected
  ASoC: compress: Fixup error messages
  ASoC: compress: Remove some extraneous blank lines
  ASoC: compress: Correct handling of copy callback
  ASoC: Intel: kbl: Enable mclk and ssp sclk early
  ASoC: Intel: Skylake: Add extended I2S config blob support in Clock driver
  ASoC: Intel: Skylake: Add ssp clock driver
  ASoC: Fix twl4030 and 6040 regression by adding back read and write
  ASoC: sun8i-codec: Add ADC support for a33
  ASoC: rockchip: Use dummy_dai for rt5514 dsp dailink
  ASoC: soc-pcm: rename .pmdown_time to .use_pmdown_time for Component
  ASoC: ak4613: call dummy write for PW_MGMT1/3 when Playback
  ASoC: soc-pcm: don't call flush_delayed_work() many times in soc_pcm_private_free()
  ASoC: soc-core: snd_soc_rtdcom_lookup() cares component driver name
  ASoC: sam9x5_wm8731: Drop 'ASoC' prefix from error messages
  ASoC: sam9g20_wm8731: use dev_*() logging functions
  ASoC: max98373 Changed SPDX header in C++ comments style
  ASoC: dmic: Fix check of return value from read of 'num-channels'
  ...
2018-02-07 12:11:09 -08:00
Mark Brown
171248777a
Merge remote-tracking branches 'asoc/topic/max98373', 'asoc/topic/mtk', 'asoc/topic/pcm', 'asoc/topic/rockchip' and 'asoc/topic/sam9g20_wm8731' into asoc-next 2018-02-07 11:25:44 +00:00
Mark Brown
535b218a7f
Merge remote-tracking branches 'asoc/topic/ak4613', 'asoc/topic/core', 'asoc/topic/dmic' and 'asoc/topic/intel' into asoc-next 2018-02-07 11:25:41 +00:00
Linus Torvalds
168fe32a07 Merge branch 'misc.poll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull poll annotations from Al Viro:
 "This introduces a __bitwise type for POLL### bitmap, and propagates
  the annotations through the tree. Most of that stuff is as simple as
  'make ->poll() instances return __poll_t and do the same to local
  variables used to hold the future return value'.

  Some of the obvious brainos found in process are fixed (e.g. POLLIN
  misspelled as POLL_IN). At that point the amount of sparse warnings is
  low and most of them are for genuine bugs - e.g. ->poll() instance
  deciding to return -EINVAL instead of a bitmap. I hadn't touched those
  in this series - it's large enough as it is.

  Another problem it has caught was eventpoll() ABI mess; select.c and
  eventpoll.c assumed that corresponding POLL### and EPOLL### were
  equal. That's true for some, but not all of them - EPOLL### are
  arch-independent, but POLL### are not.

  The last commit in this series separates userland POLL### values from
  the (now arch-independent) kernel-side ones, converting between them
  in the few places where they are copied to/from userland. AFAICS, this
  is the least disruptive fix preserving poll(2) ABI and making epoll()
  work on all architectures.

  As it is, it's simply broken on sparc - try to give it EPOLLWRNORM and
  it will trigger only on what would've triggered EPOLLWRBAND on other
  architectures. EPOLLWRBAND and EPOLLRDHUP, OTOH, are never triggered
  at all on sparc. With this patch they should work consistently on all
  architectures"

* 'misc.poll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (37 commits)
  make kernel-side POLL... arch-independent
  eventpoll: no need to mask the result of epi_item_poll() again
  eventpoll: constify struct epoll_event pointers
  debugging printk in sg_poll() uses %x to print POLL... bitmap
  annotate poll(2) guts
  9p: untangle ->poll() mess
  ->si_band gets POLL... bitmap stored into a user-visible long field
  ring_buffer_poll_wait() return value used as return value of ->poll()
  the rest of drivers/*: annotate ->poll() instances
  media: annotate ->poll() instances
  fs: annotate ->poll() instances
  ipc, kernel, mm: annotate ->poll() instances
  net: annotate ->poll() instances
  apparmor: annotate ->poll() instances
  tomoyo: annotate ->poll() instances
  sound: annotate ->poll() instances
  acpi: annotate ->poll() instances
  crypto: annotate ->poll() instances
  block: annotate ->poll() instances
  x86: annotate ->poll() instances
  ...
2018-01-30 17:58:07 -08:00
Kuninori Morimoto
72c3818411
ASoC: soc-pcm: rename .pmdown_time to .use_pmdown_time for Component
commit fbb16563c6 ("ASoC: snd_soc_component_driver has pmdown_time")
added new .pmdown_time which is for inverted version of current
.ignore_pmdown_time
But it is confusable name. Let's rename it to .use_pmdown_time

Reported-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-24 16:44:22 +00:00
Mark Brown
27d62d4a2d
Merge remote-tracking branches 'asoc/topic/stm32', 'asoc/topic/sun4i-i2s', 'asoc/topic/sunxi', 'asoc/topic/symmetry' and 'asoc/topic/tas5720' into asoc-next 2018-01-18 11:56:17 +00:00
Mark Brown
bb4f1a6c66
Merge remote-tracking branches 'asoc/topic/rl6231', 'asoc/topic/rt5514', 'asoc/topic/rt5645' and 'asoc/topic/samsung' into asoc-next 2018-01-18 11:56:11 +00:00
Mark Brown
0e987921bb
Merge remote-tracking branches 'asoc/topic/fsl', 'asoc/topic/fsl-ssi', 'asoc/topic/fsl_asrc' and 'asoc/topic/hdac_hdmi' into asoc-next 2018-01-18 11:55:56 +00:00
Mark Brown
6ec2c85f67
Merge remote-tracking branches 'asoc/topic/cs47l24', 'asoc/topic/cx20442', 'asoc/topic/da7213', 'asoc/topic/da7218' and 'asoc/topic/dai-drv' into asoc-next 2018-01-18 11:55:50 +00:00
Mark Brown
078b3a0205
Merge remote-tracking branch 'asoc/topic/rcar' into asoc-next 2018-01-18 11:55:37 +00:00
Mark Brown
b68cbc1d1d
Merge remote-tracking branch 'asoc/topic/intel' into asoc-next 2018-01-18 11:55:32 +00:00
Mark Brown
49fdfe3655
Merge remote-tracking branch 'asoc/topic/core' into asoc-next 2018-01-18 11:55:31 +00:00
Kuninori Morimoto
d0ff8ba57d
ASoC: add Component level .read/.write
In current ALSA SoC, Codec only has .read/.write callback.
Codec will be merged into Component in next generation ALSA SoC,
thus current Codec specific feature need to be merged into it.
This is glue patch for it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-16 13:26:42 +00:00
Andy Shevchenko
3a1479599a
ASoC: Intel - Convert to use acpi_dev_get_first_match_name()
Instead of home grown snd_soc_acpi_find_name_from_hid() use
acpi_dev_get_first_match_name().

Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-12 21:20:29 +00:00
Mark Brown
05a76e8101
Merge branch 'topic/hdac-hdmi' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-intel 2018-01-12 21:19:05 +00:00
Pierre-Louis Bossart
2be2d57986
ASoC: acpi: remove hard-coded i2c-device name length
Remove hard-codec [16] array size, replace with clearer description and
dependency on ACPI_ID_LEN
No functionality change

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-By: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-12 21:05:41 +00:00
Mark Brown
2ebec60bc9
Merge branch 'fix/intel' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-intel 2018-01-12 21:04:56 +00:00
Mark Brown
ced9541ce7
Merge remote-tracking branches 'asoc/topic/sunxi', 'asoc/topic/symmetry', 'asoc/topic/tas5720', 'asoc/topic/tas6424' and 'asoc/topic/tfa9879' into asoc-next 2018-01-12 12:29:30 +00:00
Mark Brown
9888d357dd
Merge remote-tracking branches 'asoc/topic/rt5514', 'asoc/topic/rt5645', 'asoc/topic/samsung' and 'asoc/topic/si476x' into asoc-next 2018-01-12 12:29:23 +00:00
Mark Brown
041627790b
Merge remote-tracking branches 'asoc/topic/eukrea-tlv320', 'asoc/topic/fsl', 'asoc/topic/fsl-ssi' and 'asoc/topic/fsl_asrc' into asoc-next 2018-01-12 12:29:08 +00:00
Mark Brown
da7b34f80e
Merge remote-tracking branches 'asoc/topic/da7218', 'asoc/topic/dai-drv', 'asoc/topic/davinci', 'asoc/topic/disconnect' and 'asoc/topic/ep93xx' into asoc-next 2018-01-12 12:29:05 +00:00
Mark Brown
84d306237b
Merge remote-tracking branch 'asoc/topic/rcar' into asoc-next 2018-01-12 12:28:52 +00:00
Mark Brown
3e4555ab2f
Merge remote-tracking branch 'asoc/topic/intel' into asoc-next 2018-01-12 12:28:47 +00:00
Pierre-Louis Bossart
845ab40092
ASoC: acpi: add missing includes for non-ACPI platforms
0-day reports compilation issues with non-ACPI platforms.

In file included from sound/soc/soc-acpi.c:17:0:
>> include/sound/soc-acpi.h:36:46: error: 'ACPI_ID_LEN' undeclared here
(not in a function); did you mean 'ACPI_FILE'?
    snd_soc_acpi_find_name_from_hid(const u8 hid[ACPI_ID_LEN])

 sound/soc/soc-acpi.c: At top level:
>> sound/soc/soc-acpi.c:174:16: error: expected declaration specifiers or
'...' before string constant
    MODULE_LICENSE("GPL v2");

Add missing include files.

Fixes: 7feb2f786a ("ASoC: move ACPI common code out of Intel/sst tree")
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-By: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08 15:56:34 +00:00
Jeremy Cline
0d5ea120ab
ASoC: Replace snd_soc_acpi_check_hid with acpi_dev_present
Replace snd_soc_acpi_check_hid() with the generic acpi_dev_present()
and remove the now unused snd_soc_acpi_check_hid function. This should
have no functional change.

Signed-off-by: Jeremy Cline <jeremy@jcline.org>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08 15:55:16 +00:00
Kuninori Morimoto
574d31d013
ASoC: soc-dai.h: remove symmetric_xxx from snd_soc_dai
ALSA SoC has some duplicate parameter.
snd_soc_dai::symmetric_xxx are one of them.

commit f0fba2ad1b ("ASoC: multi-component - ASoC Multi-Component
Support") moved "symmetric_xxx" flags from snd_soc_dai to
snd_soc_dai_driver. No one is using snd_soc_dai::symmetric_xxx now.
Let's remove it

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-22 15:57:42 +00:00
Kuninori Morimoto
4855f6a628
ASoC: soc.h: Arrange DAI related parameter
"dai_list" and "num_dai" on snd_soc_component are related
parameter. Let's arrange these.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-20 15:41:09 +00:00
Kuninori Morimoto
58bf417900
ASoC: soc-core: remove dai_drv from snd_soc_component
ALSA SoC has some duplicate parameter.
snd_soc_component::dai_drv is one of them.

Each DAI is keeping its driver as snd_soc_dai::driver,
and component has dai_list.
This means, we can reach to each DAI and its driver by using dai_link.
Thus, there is no need to keep DAI driver pointer on component.
Let's remove it

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-20 15:41:09 +00:00
Hans de Goede
aa9c387c2d
ASoC: rt5645: Set card long_name for GPD win / pocket
The GPD win and pocket devices both use the same codec setup and both
have too generic dmi strings making snd_soc_set_dmi_name() not work.

As these devices have only a single speaker we want a separate ucm
file for them, which requires a unique long_name, use the existing
GPD quirk handling to also provide a unique long_name.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-12 10:41:56 +00:00
Ughreja, Rakesh A
f0c5ebebac
ASoC: hdac_hdmi: clean up hdac_device variable names
This patch renames all the variable instances of hdac_device with hdev
to prepare the code base to remove the usage of hdac_ext_device
data structures done in the following patches. Existing code uses hdev
and hdac as variable names for hdac_device as well as hdac_ext_device,
which creates confusion.

Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-01 12:48:16 +00:00
Maciej S. Szmigiero
823dbb6eb0 ALSA: pcm: add SNDRV_PCM_FORMAT_{S,U}20
This format is similar to existing SNDRV_PCM_FORMAT_{S,U}20_3 that keep
20-bit PCM samples in 3 bytes, however i.MX6 platform SSI FIFO does not
allow 3-byte accesses (including DMA) so a 4-byte (more conventional)
format is needed for it.

Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-11-29 09:26:33 +01:00
Kuninori Morimoto
ef2e8175eb
ASoC: add snd_soc_disconnect_sync()
Now, we have snd_card_disconnect_sync() on ALSA framework.
snd_soc_disconnect_sync() is ASoC version of it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-11-28 15:21:39 +00:00
Al Viro
a3f8683bf7 ->poll() methods should return __poll_t
The most common place to find POLL... bitmaps: return values
of ->poll() and its subsystem counterparts.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-11-27 16:19:52 -05:00
Takashi Iwai
d6c0615f51 ALSA: hda - Fix yet remaining issue with vmaster 0dB initialization
The previous fix for addressing the breakage in vmaster slave
initialization, commit a91d66129f ("ALSA: hda - Fix incorrect TLV
callback check introduced during set_fs() removal"), introduced a new
helper to process over each slave kctl.  However, this helper passes
only the original kctl, not the virtual slave kctl.  As a result,
HD-audio driver (which is the only user so far) couldn't initialize
the slave correctly because it's trying to update the value directly
with the original kctl, not with the mapped kctl.

This patch fixes the situation again by passing both the mapped slaved
and original slave kctls to the function.  Luckily there is a single
caller as of now, so changing the call signature is no big matter.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=197959
Fixes: a91d66129f ("ALSA: hda - Fix incorrect TLV callback check introduced during set_fs() removal")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-11-22 12:34:56 +01:00
Takashi Iwai
76727c2c3b ASoC: Updates for v4.15
The biggest thing this release has been the conversion of the AC98 bus
 to the driver model, that's been a long time coming so thanks to Robert
 Jarzmik for his dedication there.  Due to there being some AC97 MFD
 there's a few fairly large changes in input and the MFD layer, mainly to
 the wm97xx driver.
 
 There's also some drivers/drm changes to support the new AMD Stoney
 platform, these are shared with the DRM subsystem and should be being
 merged via both.
 
 Within the subsystem the overwhelming bulk of the changes is in the
 Intel drivers which continue to need lots of cleanups and fixes, this
 release they've also gained support for their open source firmware.
 There's also some large changs in the core as Morimoto-san continues to
 mirror operations into the component level in preparation for conversion
 of drivers to that.
 
  - The AC97 bus has finally caught up with the driver model thanks to
    some dedicated and persistent work from Robert Jarzmik.
  - Continued work from Morimoto-san on moving us towards being able to
    use components for everything.
  - Lots of cleanups for the Intel platform code, including support for
    their open source audio firmware.
  - Support for scaling MCLK with sample rate in simple-card.
  - Support for AMD Stoney platform.
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Merge tag 'asoc-v4.15' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v4.15

The biggest thing this release has been the conversion of the AC98 bus
to the driver model, that's been a long time coming so thanks to Robert
Jarzmik for his dedication there.  Due to there being some AC97 MFD
there's a few fairly large changes in input and the MFD layer, mainly to
the wm97xx driver.

There's also some drivers/drm changes to support the new AMD Stoney
platform, these are shared with the DRM subsystem and should be being
merged via both.

Within the subsystem the overwhelming bulk of the changes is in the
Intel drivers which continue to need lots of cleanups and fixes, this
release they've also gained support for their open source firmware.
There's also some large changs in the core as Morimoto-san continues to
mirror operations into the component level in preparation for conversion
of drivers to that.

 - The AC97 bus has finally caught up with the driver model thanks to
   some dedicated and persistent work from Robert Jarzmik.
 - Continued work from Morimoto-san on moving us towards being able to
   use components for everything.
 - Lots of cleanups for the Intel platform code, including support for
   their open source audio firmware.
 - Support for scaling MCLK with sample rate in simple-card.
 - Support for AMD Stoney platform.
2017-11-13 15:45:57 +01:00
Takashi Iwai
c429bda21f Merge branch 'for-next' into for-linus
Pull 4.15 updates to take over the previous urgent fixes.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-11-13 15:43:13 +01:00
Mark Brown
84400d7ff8
Merge remote-tracking branches 'asoc/topic/rt5645', 'asoc/topic/rt5651', 'asoc/topic/rt5659', 'asoc/topic/rt5663' and 'asoc/topic/rt5670' into asoc-next 2017-11-10 21:31:25 +00:00
Mark Brown
242f66c845
Merge remote-tracking branches 'asoc/topic/ac97', 'asoc/topic/ac97-mfd', 'asoc/topic/amd' and 'asoc/topic/arizona-mfd' into asoc-next 2017-11-10 21:31:02 +00:00
Mark Brown
c44ff31ae0
Merge remote-tracking branch 'asoc/topic/intel' into asoc-next 2017-11-10 21:30:53 +00:00
Mark Brown
aa38bff808
Merge remote-tracking branch 'asoc/topic/core' into asoc-next 2017-11-10 21:30:50 +00:00
Mark Brown
73e13d0f6c
Merge remote-tracking branch 'asoc/topic/component' into asoc-next 2017-11-10 21:30:48 +00:00
Kuninori Morimoto
e07bd30bb8
ASoC: add snd_soc_dapm_kcontrol_component()
snd_soc_dapm_kcontrol_codec() (= for Codec) will be removed soon.
This patch Component version of it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-11-08 21:19:39 +00:00
Kuninori Morimoto
474db2c999
ASoC: add snd_soc_component_cache_sync()
snd_soc_cache_sync() (= for Codec) will be removed soon.
This patch Component version of it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-11-08 21:19:38 +00:00
Kuninori Morimoto
10e079d987
ASoC: add snd_soc_component_xxx_bias_level()
snd_soc_codec_xxx_bias_level() (= for Codec) will be removed soon.
This patch Component version of it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-11-08 21:19:37 +00:00
Kuninori Morimoto
738b49efe6
ASoC: add snd_soc_component_read32
Current codec drivers are using snd_soc_read(). It will be replaced
into snd_soc_component_read(), but these 2 are using different style.
For example, it will be

	- val = snd_soc_read(xxx, reg);
	+ ret = snd_soc_component_read(xxx, reg, &val);
	+ if (ret < 0) {
	+	...
	+ }

To more smooth replace, let's add snd_soc_component_read32
which is copied from snd_soc_read()

	- val = snd_soc_read(xxx, reg);
	+ val = snd_soc_component_read32(xxx, reg);

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-11-08 21:19:36 +00:00
oder_chiou@realtek.com
fc9cab0583
ASoC: rt5514: The DSP clock can be calibrated by the other clock source
Add the option for the DSP clock that can be calibrated by the other clock
source.

Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-11-07 11:23:36 +01:00
Takashi Iwai
3510c7aa06 ALSA: seq: Avoid invalid lockdep class warning
The recent fix for adding rwsem nesting annotation was using the given
"hop" argument as the lock subclass key.  Although the idea itself
works, it may trigger a kernel warning like:
  BUG: looking up invalid subclass: 8
  ....
since the lockdep has a smaller number of subclasses (8) than we
currently allow for the hops there (10).

The current definition is merely a sanity check for avoiding the too
deep delivery paths, and the 8 hops are already enough.  So, as a
quick fix, just follow the max hops as same as the max lockdep
subclasses.

Fixes: 1f20f9ff57 ("ALSA: seq: Fix nested rwsem annotation for lockdep splat")
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-11-06 20:25:31 +01:00
Takashi Iwai
9b7d869ee5 ALSA: timer: Limit max instances per timer
Currently we allow unlimited number of timer instances, and it may
bring the system hogging way too much CPU when too many timer
instances are opened and processed concurrently.  This may end up with
a soft-lockup report as triggered by syzkaller, especially when
hrtimer backend is deployed.

Since such insane number of instances aren't demanded by the normal
use case of ALSA sequencer and it merely  opens a risk only for abuse,
this patch introduces the upper limit for the number of instances per
timer backend.  As default, it's set to 1000, but for the fine-grained
timer like hrtimer, it's set to 100.

Reported-by: syzbot
Tested-by: Jérôme Glisse <jglisse@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-11-06 10:41:24 +01:00
Greg Kroah-Hartman
b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00