diff options
| -rw-r--r-- | sound/usb/usbaudio.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c index 3f7930c0b61..8d4a085f642 100644 --- a/sound/usb/usbaudio.c +++ b/sound/usb/usbaudio.c @@ -815,8 +815,14 @@ static int wait_clear_urbs(snd_usb_substream_t *subs) */ static snd_pcm_uframes_t snd_usb_pcm_pointer(snd_pcm_substream_t *substream) { - snd_usb_substream_t *subs = (snd_usb_substream_t *)substream->runtime->private_data; - return subs->hwptr_done; + snd_usb_substream_t *subs; + snd_pcm_uframes_t hwptr_done; + + subs = (snd_usb_substream_t *)substream->runtime->private_data; + spin_lock(&subs->lock); + hwptr_done = subs->hwptr_done; + spin_unlock(&subs->lock); + return hwptr_done; } |