From 5a4753112afc4d418ec6023bac757a9ec3eb7a32 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 19 Jan 2015 16:15:54 +0100 Subject: [PATCH] ALSA: line6: Sync PCM stop at disconnect 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(). Tested-by: Chris Rorvick Signed-off-by: Takashi Iwai --- 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. -- 2.30.2