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7af5a14371
linux/sound/usb
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Takashi Iwai 7af5a14371 ALSA: usb-audio: Fix regression on Sony WALKMAN NW-A45 DAC 
We've got a regression report for USB-audio with Sony WALKMAN NW-A45
DAC device where no sound is audible on recent kernel.  The bisection
resulted in the code change wrt endpoint management, and the further
debug session revealed that it was caused by the order of the USB
audio interface.  In the earlier code, we always set up the USB
interface at first before other setups, but it was changed to be done
at the last for UAC2/3, which is more standard way, while keeping the
old way for UAC1.  OTOH, this device seems requiring the setup of the
interface at first just like UAC1.

This patch works around the regression by applying the interface setup
specifically for the WALKMAN at the beginning of the endpoint setup
procedure.  This change is written straightforwardly to be easily
backported in old kernels.  A further cleanup to move the workaround
into a generic quirk section will follow in a later patch.

Fixes: bf6313a0ff ("ALSA: usb-audio: Refactor endpoint management")
Cc: <stable@vger.kernel.org>
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=214105
Link: https://lore.kernel.org/r/20210824054700.8236-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-08-24 07:50:46 +02:00
..
6fire module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
bcd2000 ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
caiaq module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
hiface module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
line6 ALSA: line6: Fix racy initialization of LINE6 MIDI 2021-05-19 16:25:57 +02:00
misc module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
usx2y ALSA: usx2y: fix spelling mistakes 2021-07-05 19:30:33 +02:00
card.c ALSA: usb-audio: Fix superfluous autosuspend recovery 2021-07-26 18:49:50 +02:00
card.h ALSA: usb-audio: Reduce latency at playback start, take#2 2021-07-07 16:45:33 +02:00
clock.c ALSA: usb-audio: fix incorrect clock source setting 2021-07-24 10:06:52 +02:00
clock.h ALSA: usb-audio: Constify audioformat pointer references 2020-11-23 15:15:36 +01:00
endpoint.c ALSA: usb-audio: Fix regression on Sony WALKMAN NW-A45 DAC 2021-08-24 07:50:46 +02:00
endpoint.h ALSA: usb-audio: Remove the repeated declaration 2021-05-30 09:30:46 +02:00
format.c ALSA: usb-audio: fix rate on Ozone Z90 USB headset 2021-06-17 11:38:46 +02:00
format.h ALSA: usb: initial USB Audio Device Class 3.0 support 2018-03-21 11:46:33 +01:00
helper.c ALSA: usb-audio: Add snd_usb_get_host_interface() helper 2020-11-23 15:13:47 +01:00
helper.h ALSA: usb-audio: Add snd_usb_get_host_interface() helper 2020-11-23 15:13:47 +01:00
implicit.c ALSA: usb-audio: Generic application of implicit fb to Roland/BOSS devices 2021-04-22 18:19:47 +02:00
implicit.h ALSA: usb-audio: Factor out the implicit feedback quirk code 2020-11-23 15:17:00 +01:00
Kconfig sound: Fix Kconfig indentation 2019-10-07 03:53:03 +02:00
Makefile ALSA: usb-audio: Factor out the implicit feedback quirk code 2020-11-23 15:17:00 +01:00
media.c ALSA: usb-audio: fix spelling mistakes 2021-07-05 19:33:54 +02:00
media.h media: sound/usb: Use Media Controller API to share media resources 2019-04-22 11:21:06 -04:00
midi.c ALSA: usb-audio: Fix potential out-of-bounce access in MIDI EP parser 2021-05-11 11:10:37 +02:00
midi.h ALSA: usb-audio: generate midi streaming substream names from jack names 2021-03-01 09:21:54 +01:00
mixer_maps.c ALSA: usb-audio: Add dB range mapping for Sennheiser Communications Headset PC 8 2021-05-03 13:35:58 +02:00
mixer_quirks.c ALSA: usb-audio: scarlett2: Add support for Solo and 2i2 Gen 3 2021-06-22 21:42:24 +02:00
mixer_quirks.h ALSA: usb-audio: Initialize Dell Dock playback volumes 2018-05-02 16:02:32 +02:00
mixer_s1810c.c ALSA: usb-audio: fix spelling mistakes 2021-07-05 19:33:54 +02:00
mixer_s1810c.h ALSA: usb-audio: Add support for Presonus Studio 1810c 2020-02-15 09:46:16 +01:00
mixer_scarlett_gen2.c ALSA: scarlett2: Fix line out/speaker switching notifications 2021-07-24 10:05:30 +02:00
mixer_scarlett_gen2.h ALSA: usb-audio: scarlett2: Improve driver startup messages 2021-05-21 16:22:52 +02:00
mixer_scarlett.c ALSA: usb-audio: fix spelling mistakes 2021-07-05 19:33:54 +02:00
mixer_scarlett.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mixer_us16x08.c ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
mixer_us16x08.h ALSA: usb: Constify snd_kcontrol_new items 2020-01-03 09:24:34 +01:00
mixer.c ALSA: usb-audio: Avoid unnecessary or invalid connector selection at resume 2021-07-30 08:47:01 +02:00
mixer.h ALSA: usb-audio: scarlett2: Fix wrong resume call 2021-06-22 21:39:19 +02:00
pcm.c ALSA: usb-audio: Reduce latency at playback start, take#2 2021-07-07 16:45:33 +02:00
pcm.h ALSA: usb-audio: Make snd_usb_pcm_delay() static 2021-06-02 09:01:17 +02:00
power.c ALSA: usb-audio: More validations of descriptor units 2019-08-22 10:35:59 +02:00
power.h ALSA: usb-audio: Initial Power Domain support 2018-07-31 15:01:22 +02:00
proc.c ALSA: usb-audio: Show sync endpoint information in proc outputs 2020-11-23 15:16:45 +01:00
proc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
quirks-table.h ALSA: usb-audio: Add support for Denon DN-X1600 2021-06-10 10:38:33 +02:00
quirks.c ALSA: usb-audio: Add registration quirk for JBL Quantum 600 2021-07-27 12:45:52 +02:00
quirks.h ALSA: usb-audio: Constify audioformat pointer references 2020-11-23 15:15:36 +01:00
stream.c Merge branch 'for-linus' into for-next 2020-12-14 09:05:29 +01:00
stream.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
usbaudio.h ALSA: usb-audio: Apply implicit feedback mode for BOSS devices 2021-04-14 14:24:22 +02:00
validate.c ALSA: usb-audio: Fix endianess in descriptor validation 2020-02-01 09:06:11 +01:00