[ALSA] Fix sleep in atomic in virmidi driver

Modules: ALSA sequencer

 Debug: sleeping function called from invalid context at /usr/src/linux/include/linux/rwsem.h:43
 in_atomic():1, irqs_disabled():0
  [<f999d15e>] snd_seq_deliver_event+0xb4/0x1a8 [snd_seq]
  [<f999d2be>] snd_seq_kernel_client_dispatch+0x6c/0x7c [snd_seq]
  [<f93321fc>] snd_virmidi_output_trigger+0xca/0xe5 [snd_seq_virmidi]
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/core/seq/seq_virmidi.c

@@ -167,7 +167,7 @@ static void snd_virmidi_output_trigger(struct snd_rawmidi_substream *substream,
 			return;		/* ignored */
 		}
 		if (vmidi->event.type != SNDRV_SEQ_EVENT_NONE) {
-			if (snd_seq_kernel_client_dispatch(vmidi->client, &vmidi->event, 0, 0) < 0)
+			if (snd_seq_kernel_client_dispatch(vmidi->client, &vmidi->event, in_atomic(), 0) < 0)
 				return;
 			vmidi->event.type = SNDRV_SEQ_EVENT_NONE;
 		}
@@ -186,7 +186,7 @@ static void snd_virmidi_output_trigger(struct snd_rawmidi_substream *substream,
 				pbuf += res;
 				count -= res;
 				if (vmidi->event.type != SNDRV_SEQ_EVENT_NONE) {
-					if (snd_seq_kernel_client_dispatch(vmidi->client, &vmidi->event, 0, 0) < 0)
+					if (snd_seq_kernel_client_dispatch(vmidi->client, &vmidi->event, in_atomic(), 0) < 0)
 						return;
 					vmidi->event.type = SNDRV_SEQ_EVENT_NONE;
 				}