From: Gustavo A. R. Silva Date: Fri, 7 Jul 2017 06:51:31 +0000 (-0500) Subject: iio: adc: rockchip_saradc: add NULL check on of_match_device() return value X-Git-Tag: v4.14-rc1~148^2~364^2~27 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=36d311bc1663f004529d2f870c1fc939d00c49f0;p=platform%2Fkernel%2Flinux-rpi.git 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 Signed-off-by: Jonathan Cameron --- 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);