On Mon, 09 Dec 2019 03:51:24 +0100, Takashi Sakamoto wrote: > > Oops. I forgot to add 'ALSA: ' prefix to the subject line. I'm sorry but would I > request maintainers to add it when applying... Don't worry, applied it now with the correction. thanks, Takashi > > On Mon, Dec 9, 2019, at 08:22, Takashi Sakamoto wrote: > > Mutex is doubly unlocked in some error path of pcm.open. This commit fixes > > ALSA firewire-motu driver in Linux kernel v5.5. > > > > Reported-by: kbuild test robot <lkp@xxxxxxxxx> > > Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> > > Fixes: 3fd80b200388 ("ALSA: firewire-motu: use the same size of period > > for PCM substream in AMDTP streams") > > Fixes: 0f5482e7875b ("ALSA: firewire-motu: share PCM buffer size for > > both direction") > > Signed-off-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx> > > --- > > sound/firewire/motu/motu-pcm.c | 8 ++------ > > 1 file changed, 2 insertions(+), 6 deletions(-) > > > > diff --git a/sound/firewire/motu/motu-pcm.c b/sound/firewire/motu/motu-pcm.c > > index 349b4d09e84f..005970931030 100644 > > --- a/sound/firewire/motu/motu-pcm.c > > +++ b/sound/firewire/motu/motu-pcm.c > > @@ -177,18 +177,14 @@ static int pcm_open(struct snd_pcm_substream *substream) > > err = snd_pcm_hw_constraint_minmax(substream->runtime, > > SNDRV_PCM_HW_PARAM_PERIOD_SIZE, > > frames_per_period, frames_per_period); > > - if (err < 0) { > > - mutex_unlock(&motu->mutex); > > + if (err < 0) > > goto err_locked; > > - } > > > > err = snd_pcm_hw_constraint_minmax(substream->runtime, > > SNDRV_PCM_HW_PARAM_BUFFER_SIZE, > > frames_per_buffer, frames_per_buffer); > > - if (err < 0) { > > - mutex_unlock(&motu->mutex); > > + if (err < 0) > > goto err_locked; > > - } > > } > > } > > > > -- > > 2.20.1 > > > > _______________________________________________ > > Alsa-devel mailing list > > Alsa-devel@xxxxxxxxxxxxxxxx > > https://mailman.alsa-project.org/mailman/listinfo/alsa-devel > > > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel