Call line6_pcm_disconnect() at disconnect to make sure that all URBs are cleared. Also reduce the superfluous snd_pcm_stop() calls from the function (and remove the unused function) since the streams are guaranteed to be stopped at this point via snd_card_disconnect().
Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/usb/line6/driver.c | 2 ++ sound/usb/line6/pcm.c | 19 +------------------ 2 files changed, 3 insertions(+), 18 deletions(-)
diff --git a/sound/usb/line6/driver.c b/sound/usb/line6/driver.c index f222d9ffeca5..1193d16396a0 100644 --- a/sound/usb/line6/driver.c +++ b/sound/usb/line6/driver.c @@ -670,6 +670,8 @@ void line6_disconnect(struct usb_interface *interface) dev_err(line6->ifcdev, "driver bug: inconsistent usb device\n");
snd_card_disconnect(line6->card); + if (line6->line6pcm) + line6_pcm_disconnect(line6->line6pcm); if (line6->disconnect) line6->disconnect(interface);
diff --git a/sound/usb/line6/pcm.c b/sound/usb/line6/pcm.c index 39034c7681da..08fa9753a680 100644 --- a/sound/usb/line6/pcm.c +++ b/sound/usb/line6/pcm.c @@ -379,30 +379,13 @@ static int snd_line6_new_pcm(struct usb_line6 *line6, struct snd_pcm **pcm_ret) }
/* - Stop substream if still running. -*/ -static void pcm_disconnect_substream(struct snd_pcm_substream *substream) -{ - if (substream->runtime && snd_pcm_running(substream)) { - snd_pcm_stream_lock_irq(substream); - snd_pcm_stop(substream, SNDRV_PCM_STATE_DISCONNECTED); - snd_pcm_stream_unlock_irq(substream); - } -} - -/* - Stop PCM stream. + Sync with PCM stream stops. */ void line6_pcm_disconnect(struct snd_line6_pcm *line6pcm) { - pcm_disconnect_substream(get_substream - (line6pcm, SNDRV_PCM_STREAM_CAPTURE)); - pcm_disconnect_substream(get_substream - (line6pcm, SNDRV_PCM_STREAM_PLAYBACK)); line6_unlink_wait_clear_audio_out_urbs(line6pcm); line6_unlink_wait_clear_audio_in_urbs(line6pcm); } -EXPORT_SYMBOL_GPL(line6_pcm_disconnect);
/* Create and register the PCM device and mixer entries.