linux/sound
Takashi Iwai 9479e75fca ALSA: hda: Keep the controller initialization even if no codecs found
Currently, when the HD-audio controller driver doesn't detect any
codecs, it tries to abort the probe.  But this abort happens at the
delayed probe, i.e. the primary probe call already returned success,
hence the driver is never unbound until user does so explicitly.
As a result, it may leave the HD-audio device in the running state
without the runtime PM.  More badly, if the device is a HD-audio bus
that is tied with a GPU, GPU cannot reach to the full power down and
consumes unnecessarily much power.

This patch changes the logic after no-codec situation; it continues
probing without the further codec initialization but keep the
controller driver running normally.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=207043
Tested-by: Roy Spliet <nouveau@spliet.org>
Link: https://lore.kernel.org/r/20200413082034.25166-5-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-04-13 18:02:58 +02:00
..
ac97 ALSA: ac97: Constify snd_ac97_bus_ops definitions 2020-01-03 09:24:11 +01:00
aoa ALSA: aoa: More constifications 2020-01-05 16:14:27 +01:00
arm ASoC: arm: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:56 +00:00
atmel ALSA: atmel: Constify snd_ac97_bus_ops definitions 2020-01-03 09:24:12 +01:00
core ALSA: pcm: oss: Fix regression by buffer overflow fix (again) 2020-04-03 09:38:50 +02:00
drivers ALSA: dummy: Use standard macros for fixing PCM format cast 2020-02-10 08:27:31 +01:00
firewire ALSA: firewire-tascam: Add missing annotation for tscm_hwdep_read_locked() 2020-03-11 07:55:38 +01:00
hda ALSA: hda: Use scnprintf() for string truncation 2020-03-13 15:59:04 +01:00
i2c ALSA: i2c: Constify snd_kcontrol_new items 2020-01-03 09:24:24 +01:00
isa ALSA: emu8000: Fix the cast to __user pointer 2020-02-10 08:26:38 +01:00
mips ALSA: sgio2audio: Remove usage of dropped hw_params/hw_free functions 2020-03-06 12:06:41 +01:00
oss compat_ioctl: remove translation for sound ioctls 2019-10-23 17:23:45 +02:00
parisc sound updates for 5.6-rc1 2020-01-28 16:26:57 -08:00
pci ALSA: hda: Keep the controller initialization even if no codecs found 2020-04-13 18:02:58 +02:00
pcmcia ALSA: pdaudiocf: More constification 2020-01-05 16:15:13 +01:00
ppc ALSA: ppc: keywest: convert to use i2c_new_client_device() 2020-03-27 09:33:01 +01:00
sh ALSA: sh: Fix compile warning wrt const 2020-01-05 16:15:14 +01:00
soc ASoC: cs4270: pull reset GPIO low then high 2020-04-07 15:29:54 +01:00
sparc ALSA: sparc: More constifications 2020-01-05 16:14:56 +01:00
spi ALSA: spi: More constification 2020-01-05 16:15:13 +01:00
synth ALSA: emux: More constifications 2020-01-05 16:14:46 +01:00
usb ALSA: usb-audio: Check mapping at creating connector controls, too 2020-04-12 10:14:54 +02:00
x86 sound updates for 5.6-rc1 2020-01-28 16:26:57 -08:00
xen ALSA: xen: Drop superfluous ioctl PCM ops 2019-12-11 07:25:35 +01:00
ac97_bus.c ALSA: ac97: Treat snd_ac97_bus_ops as const 2020-01-03 09:24:08 +01:00
Kconfig
last.c
Makefile
sound_core.c sound: fix a memory leak bug 2019-08-08 08:18:32 +02:00