iio: adc: rockchip_saradc: add NULL check on of_match_device() return value
authorGustavo A. R. Silva <garsilva@embeddedor.com>
Fri, 7 Jul 2017 06:51:31 +0000 (01:51 -0500)
committerJonathan Cameron <Jonathan.Cameron@huawei.com>
Sun, 9 Jul 2017 18:09:50 +0000 (19:09 +0100)
commit36d311bc1663f004529d2f870c1fc939d00c49f0
tree87327c0b17189107a8cfa083d7c3ad18ce53c60f
parent2f9aeeed92a2911e8f1ec89cf7f5c16b8d054fe5
iio: adc: rockchip_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 <garsilva@embeddedor.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
drivers/iio/adc/rockchip_saradc.c