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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 <s.hauer@pengutronix.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Sascha Hauer 2012-02-29 09:01:40 +01:00 committed by Mark Brown
parent 3bf6e90e47
commit 0757b6020f
1 changed files with 3 additions and 0 deletions
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3
drivers/regulator/mc13783-regulator.c
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@ -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); dev_dbg(&pdev->dev, "%s id %d\n", __func__, pdev->id);
if (!pdata)
return -EINVAL;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv) + priv = devm_kzalloc(&pdev->dev, sizeof(*priv) +
pdata->num_regulators * sizeof(priv->regulators[0]), pdata->num_regulators * sizeof(priv->regulators[0]),
GFP_KERNEL); GFP_KERNEL);