can: c_can_platform: fix irq check in probe

This patch fixes the check in the probe function whether a IRQ was supplied
to the driver. The original driver check the irq "struct resource *" against
<= 0. Use "platform_get_irq" instead.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 4 deletions

diff --git a/drivers/net/can/c_can/c_can_platform.c b/drivers/net/can/c_can/c_can_platform.c
index e629b961ae2d..cc90824f2c9c 100644
--- a/drivers/net/can/c_can/c_can_platform.c
+++ b/drivers/net/can/c_can/c_can_platform.c
@@ -73,7 +73,8 @@ static int __devinit c_can_plat_probe(struct platform_device *pdev)
         void __iomem *addr;
         struct net_device *dev;
         struct c_can_priv *priv;
-        struct resource *mem, *irq;
+        struct resource *mem;
+        int irq;
 #ifdef CONFIG_HAVE_CLK
         struct clk *clk;
 
@@ -88,8 +89,8 @@ static int __devinit c_can_plat_probe(struct platform_device *pdev)
 
         /* get the platform data */
         mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-        irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-        if (!mem || (irq <= 0)) {
+        irq = platform_get_irq(pdev, 0);
+        if (!mem || irq <= 0) {
                 ret = -ENODEV;
                 goto exit_free_clk;
         }
@@ -117,7 +118,7 @@ static int __devinit c_can_plat_probe(struct platform_device *pdev)
 
         priv = netdev_priv(dev);
 
-        dev->irq = irq->start;
+        dev->irq = irq;
         priv->regs = addr;
 #ifdef CONFIG_HAVE_CLK
         priv->can.clock.freq = clk_get_rate(clk);