* [PATCH] Video: fbdev - Fix possible NULL derefrence. [not found] <CGME20170130050148epcas1p14f6149d6f0b6f24dc31506ede089724c@epcas1p1.samsung.com> @ 2017-01-30 5:12 ` Shailendra Verma 0 siblings, 0 replies; 2+ messages in thread From: Shailendra Verma @ 2017-01-30 5:00 UTC (permalink / raw) To: Tomi Valkeinen, LABBE Corentin, Julian Scheel, Julia Lawall, Boris Brezillon, linux-fbdev, linux-kernel, p.shailesh, ashish.kalra, Shailendra Verma, Shailendra Verma of_device_get_match_data could return NULL, and so can cause a NULL pointer dereference later. Signed-off-by: Shailendra Verma <shailendra.v@samsung.com> --- drivers/video/fbdev/ssd1307fb.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c index 2925d5c..bdf7d80 100644 --- a/drivers/video/fbdev/ssd1307fb.c +++ b/drivers/video/fbdev/ssd1307fb.c @@ -560,6 +560,10 @@ static int ssd1307fb_probe(struct i2c_client *client, par->client = client; par->device_info = of_device_get_match_data(&client->dev); + if (!par->device_info) { + dev_err(&client->dev, "no device match found\n"); + return -ENODEV; + } par->reset = of_get_named_gpio(client->dev.of_node, "reset-gpios", 0); -- 1.7.9.5 ^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH] Video: fbdev - Fix possible NULL derefrence. @ 2017-01-30 5:12 ` Shailendra Verma 0 siblings, 0 replies; 2+ messages in thread From: Shailendra Verma @ 2017-01-30 5:12 UTC (permalink / raw) To: Tomi Valkeinen, LABBE Corentin, Julian Scheel, Julia Lawall, Boris Brezillon, linux-fbdev, linux-kernel, p.shailesh, ashish.kalra, Shailendra Verma, Shailendra Verma of_device_get_match_data could return NULL, and so can cause a NULL pointer dereference later. Signed-off-by: Shailendra Verma <shailendra.v@samsung.com> --- drivers/video/fbdev/ssd1307fb.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c index 2925d5c..bdf7d80 100644 --- a/drivers/video/fbdev/ssd1307fb.c +++ b/drivers/video/fbdev/ssd1307fb.c @@ -560,6 +560,10 @@ static int ssd1307fb_probe(struct i2c_client *client, par->client = client; par->device_info = of_device_get_match_data(&client->dev); + if (!par->device_info) { + dev_err(&client->dev, "no device match found\n"); + return -ENODEV; + } par->reset = of_get_named_gpio(client->dev.of_node, "reset-gpios", 0); -- 1.7.9.5 ^ permalink raw reply related [flat|nested] 2+ messages in thread
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2017-01-30 5:00 ` [PATCH] Video: fbdev - Fix possible NULL derefrence Shailendra Verma
2017-01-30 5:12 ` Shailendra Verma
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