[PATCH 5.10 12/13] ALSA: usb-audio: Dont avoid stopping the stream at disconnection

[Greg Kroah-Hartman]

From: Takashi Iwai <tiwai@xxxxxxx>

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: <stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210206203052.15606-4-tiwai@xxxxxxx
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
[sudip: adjust context]
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 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;
 }