From mboxrd@z Thu Jan 1 00:00:00 1970 From: garsilva@embeddedor.com (Gustavo A. R. Silva) Date: Fri, 7 Jul 2017 01:51:31 -0500 Subject: [PATCH] iio: adc: rockchip_saradc: add NULL check on of_match_device() return value Message-ID: <20170707065131.GA23382@embeddedgus> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- 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