From: Takashi Iwai <ti...@suse.de>
commit 257d2d7e9e798305d65825cb82b0a7d1c0511e89 upstream
In the later patch, we're going to issue the PCM sync_stop calls at
disconnection. But currently the USB-audio driver can't handle it
because it has a check of shutdown flag for stopping the URBs. This
is basically superfluous (the stopping URBs are safe at disconnection
state), so let's drop the check.
Fixes: dc5eafe7787c ("ALSA: usb-audio: Support PCM sync_stop")
Cc: <sta...@vger.kernel.org>
Link: https://lore.kernel.org/r/20210206203052.15606-4-ti...@suse.de
Signed-off-by: Takashi Iwai <ti...@suse.de>
[sudip: adjust context]
Signed-off-by: Sudip Mukherjee <sudipm.mukher...@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
sound/usb/endpoint.c | 3 ---
sound/usb/pcm.c | 5 +----
2 files changed, 1 insertion(+), 7 deletions(-)
--- a/sound/usb/endpoint.c
+++ b/sound/usb/endpoint.c
@@ -576,9 +576,6 @@ static int deactivate_urbs(struct snd_us
{
unsigned int i;
- if (!force && atomic_read(&ep->chip->shutdown)) /* to be sure... */
- return -EBADFD;
-
clear_bit(EP_FLAG_RUNNING, &ep->flags);
INIT_LIST_HEAD(&ep->ready_playback_urbs);
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -280,10 +280,7 @@ static int snd_usb_pcm_sync_stop(struct
{
struct snd_usb_substream *subs = substream->runtime->private_data;
- if (!snd_usb_lock_shutdown(subs->stream->chip)) {
- sync_pending_stops(subs);
- snd_usb_unlock_shutdown(subs->stream->chip);
- }
+ sync_pending_stops(subs);
return 0;
}
