The return value of snd_tscm_stream_get_clock() is ignored. This commit checks the value and handle error.

Fixes: e453df44f0d6 ("ALSA: firewire-tascam: add PCM functionality") Cc: stable@vger.kernel.org # v4.4+ Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp --- sound/firewire/tascam/tascam-pcm.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/sound/firewire/tascam/tascam-pcm.c b/sound/firewire/tascam/tascam-pcm.c index b5ced5415e40..2377732caa52 100644 --- a/sound/firewire/tascam/tascam-pcm.c +++ b/sound/firewire/tascam/tascam-pcm.c @@ -56,6 +56,9 @@ static int pcm_open(struct snd_pcm_substream *substream) goto err_locked;

err = snd_tscm_stream_get_clock(tscm, &clock); + if (err < 0) + goto err_locked; + if (clock != SND_TSCM_CLOCK_INTERNAL || amdtp_stream_pcm_running(&tscm->rx_stream) || amdtp_stream_pcm_running(&tscm->tx_stream)) {