[TRIDENT] teach trident_interrupt() about irqreturn_t

[Muli Ben-Yehuda <mulix@mulix.org>]

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Hi Linus, 

This patch updates trident_interrupt() to return
IRQ_HANDLED and cleans it up a little while I'm at it. Compiles, boots
and plays mp3s fine. Patch is against 2.5.68-cvs, please apply.

Index: sound/oss/trident.c
===================================================================
RCS file: /home/cvs/linux-2.5/sound/oss/trident.c,v
retrieving revision 1.20
diff -u -r1.20 trident.c
--- sound/oss/trident.c	8 Apr 2003 16:46:36 -0000	1.20
+++ sound/oss/trident.c	21 Apr 2003 09:02:01 -0000
@@ -1728,7 +1728,7 @@
 	}
 }
 
-static void trident_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t trident_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 {
 	struct trident_card *card = (struct trident_card *)dev_id;
 	u32 event;
@@ -1753,15 +1753,18 @@
 				ali_queue_task(card, gpio&0x07);
 		}
 		event = inl(TRID_REG(card, T4D_MISCINT));
-		outl(event | (ST_TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW), TRID_REG(card, T4D_MISCINT));
-		spin_unlock(&card->lock);
-		return;
+		event |= (ST_TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW); 
+		outl(event, TRID_REG(card, T4D_MISCINT));
+		goto done; 
 	}
 
 	/* manually clear interrupt status, bad hardware design, blame T^2 */
 	outl((ST_TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW),
 	     TRID_REG(card, T4D_MISCINT));
+
+done: 
 	spin_unlock(&card->lock);
+	return IRQ_HANDLED;
 }
 
 /* in this loop, dmabuf.count signifies the amount of data that is waiting to be copied to

-- 
Muli Ben-Yehuda
http://www.mulix.org


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