diff options
| -rw-r--r-- | sound/usb/card.c | 2 | ||||
| -rw-r--r-- | sound/usb/card.h | 1 | ||||
| -rw-r--r-- | sound/usb/pcm.c | 10 |
3 files changed, 10 insertions, 3 deletions
diff --git a/sound/usb/card.c b/sound/usb/card.c index 4a469f0cb6d..561bb74fd36 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -646,6 +646,8 @@ static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) list_for_each(p, &chip->pcm_list) { as = list_entry(p, struct snd_usb_stream, list); snd_pcm_suspend_all(as->pcm); + as->substream[0].need_setup_ep = + as->substream[1].need_setup_ep = true; } } } else { diff --git a/sound/usb/card.h b/sound/usb/card.h index 6cc883c3567..afa4f9e9b27 100644 --- a/sound/usb/card.h +++ b/sound/usb/card.h @@ -125,6 +125,7 @@ struct snd_usb_substream { struct snd_usb_endpoint *data_endpoint; struct snd_usb_endpoint *sync_endpoint; unsigned long flags; + bool need_setup_ep; /* (re)configure EP at prepare? */ u64 formats; /* format bitmasks (all or'ed) */ unsigned int num_formats; /* number of supported audio formats (list) */ diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index ae783d40f55..55e19e1b80e 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -510,6 +510,7 @@ static int snd_usb_hw_params(struct snd_pcm_substream *substream, subs->interface = fmt->iface; subs->altset_idx = fmt->altset_idx; + subs->need_setup_ep = true; return 0; } @@ -568,9 +569,12 @@ static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) if (ret < 0) return ret; - ret = configure_endpoint(subs); - if (ret < 0) - return ret; + if (subs->need_setup_ep) { + ret = configure_endpoint(subs); + if (ret < 0) + return ret; + subs->need_setup_ep = false; + } /* some unit conversions in runtime */ subs->data_endpoint->maxframesize = |