From: Figo.zhang <figo1802@gmail.com>
Date: Wed, 3 Jun 2009 02:01:04 +0000 (-0300)
Subject: V4L/DVB (11991): buf-core.c: add pointer check
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=96ceea2734d922d07000e98606231f3d675e09f8;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

V4L/DVB (11991): buf-core.c: add pointer check

add poiter check for videobuf_queue_core_init().

any guys who write a v4l driver, pass a NULL pointer or a non-inintial
pointer to the first parameter such as videobuf_queue_sg_init() , it
would be crashed.

Signed-off-by: Figo.zhang <figo1802@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/video/videobuf-core.c b/drivers/media/video/videobuf-core.c
index 48c3ebdb415f..f1ccf98c0a6f 100644
--- a/drivers/media/video/videobuf-core.c
+++ b/drivers/media/video/videobuf-core.c
@@ -118,6 +118,7 @@ void videobuf_queue_core_init(struct videobuf_queue *q,
 			 void *priv,
 			 struct videobuf_qtype_ops *int_ops)
 {
+	BUG_ON(!q);
 	memset(q, 0, sizeof(*q));
 	q->irqlock   = irqlock;
 	q->dev       = dev;