regulator: mc13783: bail out without platform data

the platform data pointer is used without checking it. Bail out in the driver instead of crashing the kernel. Signed-off-by: Sascha Hauer <[email protected]> Signed-off-by: Mark Brown <[email protected]>
redpig · Mar 11, 2012 · 0757b60 · 0757b60
1 parent 3bf6e90
commit 0757b60
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/drivers/regulator/mc13783-regulator.c b/drivers/regulator/mc13783-regulator.c
@@ -344,6 +344,9 @@ static int __devinit mc13783_regulator_probe(struct platform_device *pdev)
 
 	dev_dbg(&pdev->dev, "%s id %d\n", __func__, pdev->id);
 
+	if (!pdata)
+		return -EINVAL;
+
 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv) +
 			pdata->num_regulators * sizeof(priv->regulators[0]),
 			GFP_KERNEL);