From 2f9aeeed92a2911e8f1ec89cf7f5c16b8d054fe5 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Fri, 7 Jul 2017 01:46:30 -0500 Subject: [PATCH] iio: adc: meson-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 Acked-by: Martin Blumenstingl Signed-off-by: Jonathan Cameron --- drivers/iio/adc/meson_saradc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index 83da50ed73ab..c4e904bbf168 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -915,6 +915,11 @@ static int meson_sar_adc_probe(struct platform_device *pdev) init_completion(&priv->done); match = of_match_device(meson_sar_adc_of_match, &pdev->dev); + if (!match) { + dev_err(&pdev->dev, "failed to match device\n"); + return -ENODEV; + } + priv->data = match->data; indio_dev->name = priv->data->name;