From 2b0159d1ecfbc11badb96466c0c1582ee5ffe78f Mon Sep 17 00:00:00 2001 From: Sean Nyekjaer Date: Sun, 4 Oct 2015 18:59:45 +0200 Subject: [PATCH] sc16is7xx: null ptr check If a wrong compatible flag in specified, the of_match_device returning null. Implemented check and if NULL then returning -ENODEV. Signed-off-by: Sean Nyekjaer Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/sc16is7xx.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c index c4abd75..1ae8aa6 100644 --- a/drivers/tty/serial/sc16is7xx.c +++ b/drivers/tty/serial/sc16is7xx.c @@ -1321,6 +1321,9 @@ static int sc16is7xx_spi_probe(struct spi_device *spi) const struct of_device_id *of_id = of_match_device(sc16is7xx_dt_ids, &spi->dev); + if (!of_id) + return -ENODEV; + devtype = (struct sc16is7xx_devtype *)of_id->data; } else { const struct spi_device_id *id_entry = spi_get_device_id(spi); @@ -1380,6 +1383,9 @@ static int sc16is7xx_i2c_probe(struct i2c_client *i2c, const struct of_device_id *of_id = of_match_device(sc16is7xx_dt_ids, &i2c->dev); + if (!of_id) + return -ENODEV; + devtype = (struct sc16is7xx_devtype *)of_id->data; } else { devtype = (struct sc16is7xx_devtype *)id->driver_data; -- 2.7.4