mfd: Check jz4740-adc kmalloc() result

If kmalloc() fails exit with -ENOMEM.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/mfd/jz4740-adc.c b/drivers/mfd/jz4740-adc.c
index b30e44ac4d1c..3ad492cb6c41 100644
--- a/drivers/mfd/jz4740-adc.c
+++ b/drivers/mfd/jz4740-adc.c
@@ -260,6 +260,10 @@ static int __devinit jz4740_adc_probe(struct platform_device *pdev)
         int irq;
 
         adc = kmalloc(sizeof(*adc), GFP_KERNEL);
+        if (!adc) {
+                dev_err(&pdev->dev, "Failed to allocate driver structure\n");
+                return -ENOMEM;
+        }
 
         adc->irq = platform_get_irq(pdev, 0);
         if (adc->irq < 0) {