Messages in this thread Patch in this message | | | From | Aditya Pakki <> | Subject | [PATCH] serial: max310x: Fix to avoid potential NULL pointer dereference | Date | Mon, 18 Mar 2019 18:44:14 -0500 |
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of_match_device can return a NULL pointer when matching device is not found. This patch avoids a scenario causing NULL pointer derefernce.
Signed-off-by: Aditya Pakki <pakki001@umn.edu> --- drivers/tty/serial/max310x.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c index f5bdde405627..450ba6d7996c 100644 --- a/drivers/tty/serial/max310x.c +++ b/drivers/tty/serial/max310x.c @@ -1415,6 +1415,8 @@ static int max310x_spi_probe(struct spi_device *spi) if (spi->dev.of_node) { const struct of_device_id *of_id = of_match_device(max310x_dt_ids, &spi->dev); + if (!of_id) + return -ENODEV; devtype = (struct max310x_devtype *)of_id->data; } else { -- 2.17.1
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