ALSA: 6fire: Fix unlocked snd_pcm_stop() call

commit 5b9ab3f7324a1b94a5a5a76d44cf92dfeb3b5e80 upstream.

snd_pcm_stop() must be called in the PCM substream lock context.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/sound/usb/6fire/pcm.c b/sound/usb/6fire/pcm.c
index 40dd50a80f55de653ffc30c2c4a4960c4d868025..8221ff2f209fc650d463bf8e0bb2f744f0471500 100644 (file)
--- a/sound/usb/6fire/pcm.c
+++ b/sound/usb/6fire/pcm.c
@@ -641,17 +641,25 @@ int usb6fire_pcm_init(struct sfire_chip *chip)
 void usb6fire_pcm_abort(struct sfire_chip *chip)
 {
        struct pcm_runtime *rt = chip->pcm;
+       unsigned long flags;
        int i;
 
        if (rt) {
                rt->panic = true;
 
-               if (rt->playback.instance)
+               if (rt->playback.instance) {
+                       snd_pcm_stream_lock_irqsave(rt->playback.instance, flags);
                        snd_pcm_stop(rt->playback.instance,
                                        SNDRV_PCM_STATE_XRUN);
-               if (rt->capture.instance)
+                       snd_pcm_stream_unlock_irqrestore(rt->playback.instance, flags);
+               }
+
+               if (rt->capture.instance) {
+                       snd_pcm_stream_lock_irqsave(rt->capture.instance, flags);
                        snd_pcm_stop(rt->capture.instance,
                                        SNDRV_PCM_STATE_XRUN);
+                       snd_pcm_stream_unlock_irqrestore(rt->capture.instance, flags);
+               }
 
                for (i = 0; i < PCM_N_URBS; i++) {
                        usb_poison_urb(&rt->in_urbs[i].instance);