diff options
| -rw-r--r-- | sound/usb/pcm.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index b4ef410e5a98..7fb17c8eb49d 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -391,6 +391,20 @@ static int set_sync_endpoint(struct snd_usb_substream *subs, */ attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE; + if ((is_playback && (attr != USB_ENDPOINT_SYNC_ASYNC)) || + (!is_playback && (attr != USB_ENDPOINT_SYNC_ADAPTIVE))) { + + /* + * In these modes the notion of sync_endpoint is irrelevant. + * Reset pointers to avoid using stale data from previously + * used settings, e.g. when configuration and endpoints were + * changed + */ + + subs->sync_endpoint = NULL; + subs->data_endpoint->sync_master = NULL; + } + err = set_sync_ep_implicit_fb_quirk(subs, dev, altsd, attr); if (err < 0) return err; |