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2018-04-07ALSA: usb-audio: Refactor clock finder helpersTakashi Iwai1-74/+53
There are lots of open-coded functions to find a clock source, selector and multiplier. Now there are both v2 and v3, so six variants. This patch refactors the code to use a common helper for the main loop, and define each validator function for each target. There is no functional change. Fixes: 9a2fe9b801f5 ("ALSA: usb: initial USB Audio Device Class 3.0 support") Reviewed-by: Ruslan Bilovol <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2018-04-03ALSA: pcm: Fix UAF at PCM release via PCM timer accessTakashi Iwai1-1/+7
The PCM runtime object is created and freed dynamically at PCM stream open / close time. This is tracked via substream->runtime, and it's cleared at snd_pcm_detach_substream(). The runtime object assignment is protected by PCM open_mutex, so for all PCM operations, it's safely handled. However, each PCM substream provides also an ALSA timer interface, and user-space can access to this while closing a PCM substream. This may eventually lead to a UAF, as snd_pcm_timer_resolution() tries to access the runtime while clearing it in other side. Fortunately, it's the only concurrent access from the PCM timer, and it merely reads runtime->timer_resolution field. So, we can avoid the race by reordering kfree() and wrapping the substream->runtime clearance with the corresponding timer lock. Reported-by: [email protected] Cc: <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2018-04-02Merge tag 'asoc-v4.17' of ↵Takashi Iwai985-25650/+32364
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Updates for v4.17 This is a *very* big release for ASoC. Not much change in the core but there s the transition of all the individual drivers over to components which is intended to support further core work. The goal is to make it easier to do further core work by removing the need to special case all the different driver classes in the core, many of the devices end up being used in multiple roles in modern systems. We also have quite a lot of new drivers added this month of all kinds, quite a few for simple devices but also some more advanced ones with more substantial code. - The biggest thing is the huge series from Morimoto-san which converted everything over to components. This is a huge change by code volume but was fairly mechanical - Many fixes for some of the Realtek based Baytrail systems covering both the CODECs and the CPUs, contributed by Hans de Goode. - Lots of cleanups for Samsung based Odroid systems from Sylwester Nawrocki. - The Freescale SSI driver also got a lot of cleanups from Nicolin Chen. - The Blackfin drivers have been removed as part of the removal of the architecture. - New drivers for AKM AK4458 and AK5558, several AMD based machines, several Intel based machines, Maxim MAX9759, Motorola CPCAP, Socionext Uniphier SoCs, and TI PCM1789 and TDA7419
2018-04-02Merge branch 'for-next' into for-linusTakashi Iwai35-473/+1853
Preparation for 4.17 merge. Signed-off-by: Takashi Iwai <[email protected]>
2018-03-29ALSA: usb-audio: silence a static checker warningDan Carpenter1-1/+1
We recently made "format" a u64 variable so now static checkers complain that this shift will wrap around if format is more than 31. I don't think it makes a difference for runtime, but it's simple to silence the warning. Signed-off-by: Dan Carpenter <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2018-03-28Merge remote-tracking branch 'asoc/topic/zx_aud96p22' into asoc-nextMark Brown1-17/+18
2018-03-28Merge remote-tracking branches 'asoc/topic/wm9090', 'asoc/topic/wm9712', ↵Mark Brown5-75/+87
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2018-03-28Merge remote-tracking branches 'asoc/topic/wm8991', 'asoc/topic/wm8994', ↵Mark Brown13-1369/+1342
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2018-03-28Merge remote-tracking branches 'asoc/topic/wm8978', 'asoc/topic/wm8983', ↵Mark Brown5-457/+405
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2018-03-28Merge remote-tracking branches 'asoc/topic/wm8960', 'asoc/topic/wm8961', ↵Mark Brown7-582/+564
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2018-03-28Merge remote-tracking branches 'asoc/topic/wm8900', 'asoc/topic/wm8903', ↵Mark Brown7-599/+576
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2018-03-28Merge remote-tracking branches 'asoc/topic/wm8753', 'asoc/topic/wm8770', ↵Mark Brown5-344/+308
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2018-03-28Merge remote-tracking branches 'asoc/topic/wm8728', 'asoc/topic/wm8731', ↵Mark Brown5-299/+241
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2018-03-28Merge remote-tracking branches 'asoc/topic/wm8523', 'asoc/topic/wm8524', ↵Mark Brown6-246/+205
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2018-03-28Merge remote-tracking branches 'asoc/topic/wm2200', 'asoc/topic/wm5100', ↵Mark Brown9-511/+473
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2018-03-28Merge remote-tracking branches 'asoc/topic/vc4_hdmi', 'asoc/topic/wl1273', ↵Mark Brown6-228/+200
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2018-03-28Merge remote-tracking branches 'asoc/topic/twl4030', 'asoc/topic/twl6040', ↵Mark Brown18-522/+4622
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2018-03-28Merge remote-tracking branches 'asoc/topic/tlv320aic32x4', ↵Mark Brown5-580/+580
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2018-03-28Merge remote-tracking branches 'asoc/topic/tda7419', 'asoc/topic/tfa9879', ↵Mark Brown11-277/+1030
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2018-03-28Merge remote-tracking branches 'asoc/topic/tas2552', 'asoc/topic/tas5086', ↵Mark Brown5-298/+279
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2018-03-28Merge remote-tracking branches 'asoc/topic/sta529', 'asoc/topic/sti-sas', ↵Mark Brown9-155/+262
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2018-03-28Merge remote-tracking branches 'asoc/topic/ssm2518', 'asoc/topic/ssm2602', ↵Mark Brown7-239/+204
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2018-03-28Merge remote-tracking branches 'asoc/topic/sirf-audio', ↵Mark Brown5-63/+52
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2018-03-28Merge remote-tracking branches 'asoc/topic/rt5670', 'asoc/topic/sgtl5000', ↵Mark Brown8-290/+362
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2018-03-28Merge remote-tracking branches 'asoc/topic/rt5645', 'asoc/topic/rt5651', ↵Mark Brown20-638/+729
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2018-03-28Merge remote-tracking branches 'asoc/topic/rt298', 'asoc/topic/rt5514', ↵Mark Brown10-488/+474
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2018-03-28Merge remote-tracking branches 'asoc/topic/pistachio', 'asoc/topic/pxa', ↵Mark Brown9-131/+190
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2018-03-28Merge remote-tracking branches 'asoc/topic/msm8916-wcd-digital', ↵Mark Brown6-202/+223
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2018-03-28Merge remote-tracking branches 'asoc/topic/max98927', 'asoc/topic/mc13783', ↵Mark Brown7-238/+228
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2018-03-28Merge remote-tracking branches 'asoc/topic/max9850', 'asoc/topic/max9860', ↵Mark Brown9-200/+177
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2018-03-28Merge remote-tracking branches 'asoc/topic/isabelle', 'asoc/topic/jz4740', ↵Mark Brown8-254/+464
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2018-03-28Merge remote-tracking branches 'asoc/topic/hdmi-codec', ↵Mark Brown8-441/+54
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2018-03-28Merge remote-tracking branches 'asoc/topic/fsl_esai', 'asoc/topic/fsl_ssi', ↵Mark Brown8-388/+481
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2018-03-28Merge remote-tracking branches 'asoc/topic/dwc', 'asoc/topic/es7134', ↵Mark Brown7-151/+127
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2018-03-28Merge remote-tracking branches 'asoc/topic/da7219', 'asoc/topic/da732x', ↵Mark Brown8-269/+400
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2018-03-28Merge remote-tracking branches 'asoc/topic/cx20442', 'asoc/topic/cygnus', ↵Mark Brown7-577/+543
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2018-03-28Merge remote-tracking branches 'asoc/topic/cs42l73', 'asoc/topic/cs42xx8', ↵Mark Brown7-265/+256
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2018-03-28Merge remote-tracking branches 'asoc/topic/cs35l33', 'asoc/topic/cs35l34', ↵Mark Brown5-336/+303
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2018-03-28Merge remote-tracking branches 'asoc/topic/cpcap', 'asoc/topic/cq93vc' and ↵Mark Brown5-39/+1607
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2018-03-28Merge remote-tracking branches 'asoc/topic/arizona', 'asoc/topic/atmel', ↵Mark Brown43-5951/+840
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2018-03-28Merge remote-tracking branches 'asoc/topic/ak5386', 'asoc/topic/ak5558', ↵Mark Brown13-272/+1044
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2018-03-28Merge remote-tracking branches 'asoc/topic/ak4554', 'asoc/topic/ak4613', ↵Mark Brown5-188/+173
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2018-03-28Merge remote-tracking branches 'asoc/topic/adav80x', 'asoc/topic/ads117x', ↵Mark Brown11-175/+916
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2018-03-28Merge remote-tracking branches 'asoc/topic/ad73311', 'asoc/topic/adau1373', ↵Mark Brown10-261/+243
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2018-03-28Merge remote-tracking branches 'asoc/topic/88pm860x', 'asoc/topic/ab8500', ↵Mark Brown18-704/+652
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2018-03-28Merge remote-tracking branch 'asoc/topic/samsung' into asoc-nextMark Brown13-150/+431
2018-03-28Merge remote-tracking branch 'asoc/topic/rt5665' into asoc-nextMark Brown3-186/+171
2018-03-28Merge remote-tracking branch 'asoc/topic/pcm512x' into asoc-nextMark Brown1-82/+80
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