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Date: Mon, 30 Jan 2017 10:30:58 +0530 From: Shailendra Verma <shailendra.v@...sung.com> To: Tomi Valkeinen <tomi.valkeinen@...com>, LABBE Corentin <clabbe.montjoie@...il.com>, Julian Scheel <julian@...st.de>, Julia Lawall <Julia.Lawall@...6.fr>, Boris Brezillon <boris.brezillon@...e-electrons.com>, linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org, p.shailesh@...sung.com, ashish.kalra@...sung.com, Shailendra Verma <shailendra.v@...sung.com>, Shailendra Verma <shailendra.capricorn@...il.com> Subject: [PATCH] Video: fbdev - Fix possible NULL derefrence. of_device_get_match_data could return NULL, and so can cause a NULL pointer dereference later. Signed-off-by: Shailendra Verma <shailendra.v@...sung.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
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