fix trident.c lockup on module load 2.6.0-test2

Hi Linus,

This patch fixes a kernel lockup with 2.6.0-test2 when the trident.c OSS driver is loaded and the driver attempts to initialize the card. The problem is that in ali_ac97_get() we lock the card->lock spinlock, but never release it on the good path, only on the error path. This patch adds the missing spin_unlock_irqrestore().

This bug snuck in in a 2.4 sync from Alan, and 2.4 appears to suffer from the same problem. Patch will be send to Marcelo momentarily.

Patch is against 2.6.0-test2-cvs, tested and works, and fixes a pretty severe lockup bug. Please apply.

Cheers,
Muli.

Index: sound/oss/trident.c
===================================================================
RCS file: /home/cvs/linux-2.5/sound/oss/trident.c,v retrieving revision 1.27

diff -u -r1.27 trident.c
@@ -3017,6 +3017,8 @@
 	}
 	
 	data = inl(TRID_REG(card, address));
+
+	spin_unlock_irqrestore(&card->lock, flags); 
 	
 	return ((u16) (data >> 16));