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ALSA: usb-audio: Apply mutex around snd_usb_endpoint_set_params()

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The protection with chip->mutex was lost after splitting
snd_usb_endpoint_set_params() and snd_usb_endpoint_prepare().
Apply the same mutex again to the former function.

Fixes: 2be79d5864 ("ALSA: usb-audio: Split endpoint setups for hw_params and prepare (take#2)")
Link: https://lore.kernel.org/r/20221009104212.18877-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2022-10-09 12:42:10 +02:00
parent 9902b303b5
commit a74f8d0aa9
1 changed files with 7 additions and 3 deletions
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10
sound/usb/endpoint.c
View file

@ -1337,10 +1337,11 @@ int snd_usb_endpoint_set_params(struct snd_usb_audio *chip,
const struct audioformat *fmt = ep->cur_audiofmt;
int err;
mutex_lock(&chip->mutex);
/* release old buffers, if any */
err = release_urbs(ep, false);
if (err < 0)
return err;
goto unlock;
ep->datainterval = fmt->datainterval;
ep->maxpacksize = fmt->maxpacksize;
@ -1378,13 +1379,16 @@ int snd_usb_endpoint_set_params(struct snd_usb_audio *chip,
usb_audio_dbg(chip, "Set up %d URBS, ret=%d\n", ep->nurbs, err);
if (err < 0)
return err;
goto unlock;
/* some unit conversions in runtime */
ep->maxframesize = ep->maxpacksize / ep->cur_frame_bytes;
ep->curframesize = ep->curpacksize / ep->cur_frame_bytes;
return update_clock_ref_rate(chip, ep);
err = update_clock_ref_rate(chip, ep);
unlock:
mutex_unlock(&chip->mutex);
return err;
}
static int init_sample_rate(struct snd_usb_audio *chip,