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sc16is7xx: null ptr check

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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 <sean.nyekjaer@prevas.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sean Nyekjaer 2015-10-04 18:59:45 +02:00 committed by Greg Kroah-Hartman
parent adfb9233e4
commit 2b0159d1ec
1 changed files with 6 additions and 0 deletions
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6
drivers/tty/serial/sc16is7xx.c
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@ -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;