From: "Gustavo A. R. Silva" <[email protected]> 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 <[email protected]> Reviewed-by: Moritz Fischer <[email protected]> Signed-off-by: Alan Tull <[email protected]> --- drivers/fpga/altera-hps2fpga.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/fpga/altera-hps2fpga.c b/drivers/fpga/altera-hps2fpga.c index a18ff43..e6c948b 100644 --- a/drivers/fpga/altera-hps2fpga.c +++ b/drivers/fpga/altera-hps2fpga.c @@ -143,6 +143,11 @@ static int alt_fpga_bridge_probe(struct platform_device *pdev) int ret; of_id = of_match_device(altera_fpga_of_match, dev); + if (!of_id) { + dev_err(dev, "failed to match device\n"); + return -ENODEV; + } + priv = (struct altera_hps2fpga_data *)of_id->data; priv->bridge_reset = of_reset_control_get_exclusive_by_index(dev->of_node, -- 2.7.4
