X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fmips%2Ftxx9%2Frbtx4938%2Firq.c;h=7d21befb8932c5ba36df028cb74b1c66e61c652d;hb=56c5d900dbb8e042bfad035d18433476931d8f93;hp=ca2f8306ce93b1e95fde8594793507c4bdc356df;hpb=c4c0c56a7a85ed5725786219e4fbca7e840b1531;p=linux-2.6-omap-h63xx.git

diff --git a/arch/mips/txx9/rbtx4938/irq.c b/arch/mips/txx9/rbtx4938/irq.c
index ca2f8306ce9..7d21befb893 100644
--- a/arch/mips/txx9/rbtx4938/irq.c
+++ b/arch/mips/txx9/rbtx4938/irq.c
@@ -85,10 +85,10 @@ static int toshiba_rbtx4938_irq_nested(int sw_irq)
 	u8 level3;
 
 	level3 = readb(rbtx4938_imstat_addr);
-	if (level3)
-		/* must use fls so onboard ATA has priority */
-		sw_irq = RBTX4938_IRQ_IOC + fls(level3) - 1;
-	return sw_irq;
+	if (unlikely(!level3))
+		return -1;
+	/* must use fls so onboard ATA has priority */
+	return RBTX4938_IRQ_IOC + __fls8(level3);
 }
 
 static void __init