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| author |   Takashi Iwai <tiwai@suse.de> | 2012-11-08 15:58:25 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-11-08 15:58:25 +0100 |
| commit | 17a4adbe68c8e6c1fde8decb2345dc4acea87934 (patch) | |
| tree | 16d772ee8b5904ad9b92e1514e131bc504a079ae /sound/usb | |
| parent | ALSA: hda - Keep power link on for PantherPoint HDMI (diff) | |
| parent | ALSA: Fix card refcount unbalance (diff) | |
| download | linux-dev-17a4adbe68c8e6c1fde8decb2345dc4acea87934.tar.xz linux-dev-17a4adbe68c8e6c1fde8decb2345dc4acea87934.zip | |
Merge branch 'for-linus' into for-next
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/endpoint.c | 13 | ||||
| -rw-r--r-- | sound/usb/endpoint.h | 1 | ||||
| -rw-r--r-- | sound/usb/pcm.c | 3 |
3 files changed, 17 insertions, 0 deletions
diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c index 7f78c6d782b0..34de6f2faf61 100644 --- a/sound/usb/endpoint.c +++ b/sound/usb/endpoint.c @@ -35,6 +35,7 @@ #define EP_FLAG_ACTIVATED 0 #define EP_FLAG_RUNNING 1 +#define EP_FLAG_STOPPING 2 /* * snd_usb_endpoint is a model that abstracts everything related to an @@ -502,10 +503,20 @@ static int wait_clear_urbs(struct snd_usb_endpoint *ep) if (alive) snd_printk(KERN_ERR "timeout: still %d active urbs on EP #%x\n", alive, ep->ep_num); + clear_bit(EP_FLAG_STOPPING, &ep->flags); return 0; } +/* sync the pending stop operation; + * this function itself doesn't trigger the stop operation + */ +void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep) +{ + if (ep && test_bit(EP_FLAG_STOPPING, &ep->flags)) + wait_clear_urbs(ep); +} + /* * unlink active urbs. */ @@ -918,6 +929,8 @@ void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep, if (wait) wait_clear_urbs(ep); + else + set_bit(EP_FLAG_STOPPING, &ep->flags); } } diff --git a/sound/usb/endpoint.h b/sound/usb/endpoint.h index 6376ccf10fd4..3d4c9705041f 100644 --- a/sound/usb/endpoint.h +++ b/sound/usb/endpoint.h @@ -19,6 +19,7 @@ int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep, int snd_usb_endpoint_start(struct snd_usb_endpoint *ep, int can_sleep); void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep, int force, int can_sleep, int wait); +void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep); int snd_usb_endpoint_activate(struct snd_usb_endpoint *ep); int snd_usb_endpoint_deactivate(struct snd_usb_endpoint *ep); void snd_usb_endpoint_free(struct list_head *head); diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index 8ca6edf29fee..e7329d0449f2 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -565,6 +565,9 @@ static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) goto unlock; } + snd_usb_endpoint_sync_pending_stop(subs->sync_endpoint); + snd_usb_endpoint_sync_pending_stop(subs->data_endpoint); + ret = set_format(subs, subs->cur_audiofmt); if (ret < 0) goto unlock; |