[PATCH] handle errors returned by platform_get_irq*()

platform_get_irq*() now returns on -ENXIO when the resource cannot be
found.  Ensure all users of platform_get_irq*() handle this error
appropriately.

Signed-off-by: David Vrabel <dvrabel@arcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 7 insertions, 2 deletions

diff --git a/drivers/i2c/busses/i2c-iop3xx.c b/drivers/i2c/busses/i2c-iop3xx.c
index 1414851a17b8..d00a02fc23e4 100644
--- a/drivers/i2c/busses/i2c-iop3xx.c
+++ b/drivers/i2c/busses/i2c-iop3xx.c
@@ -434,7 +434,7 @@ static int
 iop3xx_i2c_probe(struct platform_device *pdev)
 {
         struct resource *res;
-        int ret;
+        int ret, irq;
         struct i2c_adapter *new_adapter;
         struct i2c_algo_iop3xx_data *adapter_data;
 
@@ -470,7 +470,12 @@ iop3xx_i2c_probe(struct platform_device *pdev)
                 goto release_region;
         }
 
-        ret = request_irq(platform_get_irq(pdev, 0), iop3xx_i2c_irq_handler, 0,
+        irq = platform_get_irq(pdev, 0);
+        if (irq < 0) {
+                ret = -ENXIO;
+                goto unmap;
+        }
+        ret = request_irq(irq, iop3xx_i2c_irq_handler, 0,
                                 pdev->name, adapter_data);
 
         if (ret) {