diff options
| author | Takashi Iwai <tiwai@suse.de> | 2021-03-24 09:05:25 +0100 |
|---|---|---|
| committer | Andrey Grodzovsky <andrey.grodzovsky@amd.com> | 2021-03-29 10:34:13 -0400 |
| commit | 553390b067bf77062fbc86a57246c5d37445eba5 (patch) | |
| tree | bd2277fbc0964f199d11ae2ea0fd414c24274081 | |
| parent | cbaa324799718e2b828a8c7b5b001dd896748497 (diff) | |
ALSA: pcm: Block the release until the system resume finishes
The normal PCM operations are already blocked during the card power
off state in the PCM common ioctl handler, but the release isn't
covered. As the PCM stream release may also access the hardware,
let's block the release until the card power turns on.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | sound/core/pcm_native.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 9f3f8e953ff0..1976ec309ac0 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -2797,6 +2797,10 @@ static int snd_pcm_release(struct inode *inode, struct file *file) if (snd_BUG_ON(!substream)) return -ENXIO; pcm = substream->pcm; + + /* block until the device gets woken up as it may touch the hardware */ + snd_power_wait(pcm->card, SNDRV_CTL_POWER_D0); + mutex_lock(&pcm->open_mutex); snd_pcm_release_substream(substream); kfree(pcm_file); |