linux-kernel - [PATCH] [MIPS] vr41xx: unsigned irq cannot be negative

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Message-ID: <48CF02EE.8050406@gmail.com>
Date:	Mon, 15 Sep 2008 20:50:54 -0400
From:	roel kluin <roel.kluin@...il.com>
To:	ralf@...ux-mips.org, yoichi_yuasa@...peaks.co.jp,
	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [MIPS] vr41xx: unsigned irq cannot be negative

unsigned irq cannot be negative

Signed-off-by: Roel Kluin <roel.kluin@...il.com>
---
diff --git a/arch/mips/vr41xx/common/irq.c b/arch/mips/vr41xx/common/irq.c
index cba36a2..92dd1a0 100644
--- a/arch/mips/vr41xx/common/irq.c
+++ b/arch/mips/vr41xx/common/irq.c
@@ -72,6 +72,7 @@ static void irq_dispatch(unsigned int irq)
 	cascade = irq_cascade + irq;
 	if (cascade->get_irq != NULL) {
 		unsigned int source_irq = irq;
+		int ret;
 		desc = irq_desc + source_irq;
 		if (desc->chip->mask_ack)
 			desc->chip->mask_ack(source_irq);
@@ -79,8 +80,9 @@ static void irq_dispatch(unsigned int irq)
 			desc->chip->mask(source_irq);
 			desc->chip->ack(source_irq);
 		}
-		irq = cascade->get_irq(irq);
-		if (irq < 0)
+		ret = cascade->get_irq(irq);
+		irq = ret;
+		if (ret < 0)
 			atomic_inc(&irq_err_count);
 		else
 			irq_dispatch(irq);
--
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