Messages in this thread Patch in this message | | | Date | Fri, 7 Jul 2017 01:51:31 -0500 | From | "Gustavo A. R. Silva" <> | Subject | [PATCH] iio: adc: rockchip_saradc: add NULL check on of_match_device() return value |
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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> --- drivers/iio/adc/rockchip_saradc.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c index ae6d332..2bf2ed1 100644 --- a/drivers/iio/adc/rockchip_saradc.c +++ b/drivers/iio/adc/rockchip_saradc.c @@ -224,6 +224,11 @@ static int rockchip_saradc_probe(struct platform_device *pdev) info = iio_priv(indio_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; mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); -- 2.5.0
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