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iio: adc: rockchip_saradc: add NULL check on of_match_device() return value 

Check return value from call to of_match_device()
in order to prevent a NULL pointer dereference.

In case of NULL print error message and return -ENODEV

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Gustavo A. R. Silva 2017-07-07 01:51:31 -05:00 committed by Jonathan Cameron
parent 2f9aeeed92
commit 36d311bc16
1 changed files with 5 additions and 0 deletions
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5
drivers/iio/adc/rockchip_saradc.c
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@ -224,6 +224,11 @@ static int rockchip_saradc_probe(struct platform_device *pdev)
info = iio_priv(indio_dev); info = iio_priv(indio_dev);
match = of_match_device(rockchip_saradc_match, &pdev->dev); match = of_match_device(rockchip_saradc_match, &pdev->dev);
if (!match) {
dev_err(&pdev->dev, "failed to match device\n");
return -ENODEV;
}
info->data = match->data; info->data = match->data;
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);