regulator: Avoid potential NULL dereference in reg_fixed_voltage_probe()
of_get_fixed_voltage_config() may return NULL, return -ENOMEM in this case so we don't dereference NULL pointer. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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@ -160,12 +160,17 @@ static struct regulator_ops fixed_voltage_ops = {
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static int __devinit reg_fixed_voltage_probe(struct platform_device *pdev)
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{
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struct fixed_voltage_config *config = pdev->dev.platform_data;
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struct fixed_voltage_config *config;
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struct fixed_voltage_data *drvdata;
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int ret;
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if (pdev->dev.of_node)
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config = of_get_fixed_voltage_config(&pdev->dev);
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else
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config = pdev->dev.platform_data;
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if (!config)
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return -ENOMEM;
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drvdata = kzalloc(sizeof(struct fixed_voltage_data), GFP_KERNEL);
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if (drvdata == NULL) {
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