linux/sound/pci
Takashi Iwai 50fd4987c4 ALSA: hda - Don't trust the reported actual power state
We've got a regression report that the recording on Mac with a cirrus
codec doesn't work any longer.  This turned out to be the missing
power up to D0 by power_save_node enablement.

After analyzing the traces, we found out that the culprit is that the
codec advertises the "actual" power state of a few nodes to be D0
while the "target" power state is D3.  This inconsistency is usually
OK, as it implies the power transition.  But in the case of cirrus
codec, this seems to be stuck to D3 while it's not actually D0.

This patch addresses the issue by checking the power state difference
more strictly.  It sends the power-state change verb unless both the
target and the actual power states show the given value.

We may introduce yet another flag indicating the possible broken
hardware power state, but it's anyway safer to set the proper power
state even in a transition (at least it's harmless as long as the
target state is same).  So this simpler change was applied now.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=116171
Cc: <stable@vger.kernel.org> # v4.4+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-04-17 09:39:41 +02:00
..
ac97 ALSA: ac97: Fix ifdef CONFIG_PROC_FS 2015-05-29 07:52:43 +02:00
ali5451 ALSA: remove deprecated use of pci api 2015-04-16 12:19:52 +02:00
asihpi x86/mm: Decouple <linux/vmalloc.h> from <asm/io.h> 2015-06-03 12:02:00 +02:00
au88x0 ALSA: remove deprecated use of pci api 2015-04-16 12:19:52 +02:00
aw2 ALSA: remove deprecated use of pci api 2015-04-16 12:19:52 +02:00
ca0106 ALSA: ca0106: Fix/cleanup ifdef CONFIG_PROC_FS 2015-05-29 07:54:45 +02:00
cs46xx ALSA: cs46xx: Fix suspend for all channels 2015-10-30 12:33:21 +01:00
cs5535audio ALSA: cs5535audio: constify cs5535audio_dma_ops structures 2015-12-30 22:49:40 +01:00
ctxfi ALSA: ctxfi: constify rsc ops structures 2015-11-11 08:40:56 +01:00
echoaudio ALSA: echoaudio: Use standard C definitions of true and false 2015-08-10 14:27:16 +02:00
emu10k1 ALSA: emu10k1: correctly handling failed thread creation 2016-01-29 17:30:25 +01:00
hda ALSA: hda - Don't trust the reported actual power state 2016-04-17 09:39:41 +02:00
ice1712 ALSA: i2c: constify snd_i2c_ops structures 2015-11-30 11:40:08 +01:00
korg1212 ALSA: korg1212: Use snd_pcm_hw_constraint_single() 2015-10-21 14:24:27 +02:00
lola ALSA: Deletion of checks before the function call "iounmap" 2015-01-04 15:13:45 +01:00
lx6464es ALSA: lx6464es: Use snd_pcm_hw_constraint_single() 2015-10-21 14:24:28 +02:00
mixart ALSA: mixart: silence an uninitialized variable warning 2016-03-16 16:35:16 +01:00
nm256 ALSA: Include linux/io.h instead of asm/io.h 2015-01-28 16:49:33 +01:00
oxygen ALSA: oxygen: Fix logical-not-parentheses warning 2015-08-03 10:15:09 +02:00
pcxhr ALSA: remove deprecated use of pci api 2015-04-16 12:19:52 +02:00
riptide ALSA: off by one bug in snd_riptide_joystick_probe() 2015-02-09 14:57:15 +01:00
rme9652 ALSA: hdsp: Fix wrong boolean ctl value accesses 2016-02-29 18:13:34 +01:00
trident ALSA: remove deprecated use of pci api 2015-04-16 12:19:52 +02:00
vx222 ALSA: Include linux/io.h instead of asm/io.h 2015-01-28 16:49:33 +01:00
ymfpci ALSA: Include linux/io.h instead of asm/io.h 2015-01-28 16:49:33 +01:00
ad1889.c ALSA: remove deprecated use of pci api 2015-04-16 12:19:52 +02:00
ad1889.h
ak4531_codec.c ALSA: pci: Drop superfluous ifdef CONFIG_PROC_FS 2015-05-29 08:00:06 +02:00
als300.c ALSA: remove deprecated use of pci api 2015-04-16 12:19:52 +02:00
als4000.c ALSA: remove deprecated use of pci api 2015-04-16 12:19:52 +02:00
atiixp_modem.c ALSA: atiixp: constify atiixp_dma_ops structures 2015-12-30 22:49:37 +01:00
atiixp.c ALSA: atiixp: constify atiixp_dma_ops structures 2015-12-30 22:49:37 +01:00
azt3328.c ALSA: azt3328: Remove unnecessary synchronize_irq() before free_irq() 2015-11-21 17:40:07 +01:00
azt3328.h
bt87x.c ALSA: Include linux/io.h instead of asm/io.h 2015-01-28 16:49:33 +01:00
cmipci.c ALSA: pci: Drop superfluous ifdef CONFIG_PROC_FS 2015-05-29 08:00:06 +02:00
cs4281.c ALSA: Include linux/io.h instead of asm/io.h 2015-01-28 16:49:33 +01:00
cs5530.c ASoC: sb16: Simplify snd_sb16dsp_pcm() 2015-01-02 16:28:35 +01:00
ens1370.c ALSA: Include linux/io.h instead of asm/io.h 2015-01-28 16:49:33 +01:00
ens1371.c
es1938.c ALSA: remove deprecated use of pci api 2015-04-16 12:19:52 +02:00
es1968.c [media] media, sound: tea575x: constify snd_tea575x_ops structures 2015-12-03 11:26:45 -02:00
fm801.c sound updates for 4.5-rc1 2016-01-17 12:05:31 -08:00
intel8x0.c sound updates for 4.6-rc1 2016-03-18 10:05:46 -07:00
intel8x0m.c ALSA: pci: Drop superfluous ifdef CONFIG_PROC_FS 2015-05-29 08:00:06 +02:00
Kconfig ALSA: jack: Allow building the jack layer without input device 2016-02-23 09:03:07 +01:00
maestro3.c ALSA: maestro3: Fix Allegro mute until master volume/mute is touched 2015-11-02 08:46:30 +01:00
Makefile
rme32.c ALSA: rme32: Use snd_pcm_hw_constraint_single() 2015-10-21 14:24:28 +02:00
rme96.c ALSA: rme96: Fix unexpected volume reset after rate changes 2015-12-04 20:39:49 +01:00
sis7019.c ALSA: remove deprecated use of pci api 2015-04-16 12:19:52 +02:00
sis7019.h
sonicvibes.c ALSA: remove deprecated use of pci api 2015-04-16 12:19:52 +02:00
via82xx_modem.c ALSA: Include linux/io.h instead of asm/io.h 2015-01-28 16:49:33 +01:00
via82xx.c ALSA: Use const struct ac97_quirk 2015-04-05 08:41:05 +02:00