4.1-stable review patch. If anyone has any objections, please let me know.
------------------ From: Takashi Iwai <ti...@suse.de> commit 4d0e677523a999e1dec28e55cc314c47ba09ca12 upstream. When a monitor stream is active, the next PCM stream access results in EBUSY error because of the check in line6_stream_start(). Fix this by just skipping the submission of pending URBs when the stream is already running instead. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=101431 Signed-off-by: Takashi Iwai <ti...@suse.de> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- sound/usb/line6/pcm.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) --- a/sound/usb/line6/pcm.c +++ b/sound/usb/line6/pcm.c @@ -186,12 +186,8 @@ static int line6_stream_start(struct snd int ret = 0; spin_lock_irqsave(&pstr->lock, flags); - if (!test_and_set_bit(type, &pstr->running)) { - if (pstr->active_urbs || pstr->unlink_urbs) { - ret = -EBUSY; - goto error; - } - + if (!test_and_set_bit(type, &pstr->running) && + !(pstr->active_urbs || pstr->unlink_urbs)) { pstr->count = 0; /* Submit all currently available URBs */ if (direction == SNDRV_PCM_STREAM_PLAYBACK) @@ -199,7 +195,6 @@ static int line6_stream_start(struct snd else ret = line6_submit_audio_in_all_urbs(line6pcm); } - error: if (ret < 0) clear_bit(type, &pstr->running); spin_unlock_irqrestore(&pstr->lock, flags); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
