[PATCH v2] asic3: platform_get_irq() may return signed unnoticed

[Roel Kluin <12o3l@tiscali.nl>]

asic->irq_nr is unsigned. platform_get_irq() may return signed unnoticed

Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
---
diff --git a/drivers/mfd/asic3.c b/drivers/mfd/asic3.c
index f6f2d96..8068c06 100644
--- a/drivers/mfd/asic3.c
+++ b/drivers/mfd/asic3.c
@@ -300,10 +300,13 @@ static int asic3_irq_probe(struct platform_device *pdev)
 	struct asic3 *asic = platform_get_drvdata(pdev);
 	unsigned long clksel = 0;
 	unsigned int irq, irq_base;
+	int ret;
 
-	asic->irq_nr = platform_get_irq(pdev, 0);
-	if (asic->irq_nr < 0)
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0)
 		return asic->irq_nr;
+	else
+		asic->irq_nr = ret;
 
 	/* turn on clock to IRQ controller */
 	clksel |= CLOCK_SEL_CX;