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@xxxxxxxxxxxxxxx> # v4.4+
Signed-off-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>
---
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)) {
--
2.20.1
