[PATCH] alsa: fix sleep in atomic during prepare callback

Fixed the sleep in spinlock during prepare callback.  This happened only on
Nforce chips.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

sound/pci/intel8x0.c

@@ -1020,7 +1020,9 @@ static void snd_intel8x0_setup_pcm_out(intel8x0_t *chip,
 			 */
 			if (cnt & ICH_PCM_246_MASK) {
 				iputdword(chip, ICHREG(GLOB_CNT), cnt & ~ICH_PCM_246_MASK);
+				spin_unlock_irq(&chip->reg_lock);
 				msleep(50); /* grrr... */
+				spin_lock_irq(&chip->reg_lock);
 			}
 		} else if (chip->device_type == DEVICE_INTEL_ICH4) {
 			if (runtime->sample_bits > 16)