[15/47] arm: mach-davinci: check irq2ctlr() result

Commit Message

Kevin Hilman Oct. 1, 2010, 9:29 p.m. UTC

None

Patch

diff --git a/arch/arm/mach-davinci/dma.c b/arch/arm/mach-davinci/dma.c
index 2ede598..6b96698 100644
--- a/arch/arm/mach-davinci/dma.c
+++ b/arch/arm/mach-davinci/dma.c
@@ -354,10 +354,12 @@  static int irq2ctlr(int irq)
 static irqreturn_t dma_irq_handler(int irq, void *data)
 {
 	int i;
-	unsigned ctlr;
+	int ctlr;
 	unsigned int cnt = 0;
 
 	ctlr = irq2ctlr(irq);
+	if (ctlr < 0)
+		return IRQ_NONE;
 
 	dev_dbg(data, "dma_irq_handler\n");
 
@@ -408,10 +410,12 @@  static irqreturn_t dma_irq_handler(int irq, void *data)
 static irqreturn_t dma_ccerr_handler(int irq, void *data)
 {
 	int i;
-	unsigned ctlr;
+	int ctlr;
 	unsigned int cnt = 0;
 
 	ctlr = irq2ctlr(irq);
+	if (ctlr < 0)
+		return IRQ_NONE;
 
 	dev_dbg(data, "dma_ccerr_handler\n");