[PATCH] V4L: check inval in video_register_device_index()

[Henne]

From: Henrik Kretzschmar <henne@xxxxxxxxxxxxxxxx>
Signed-off-by: Henrik Kretzschmar <henne@xxxxxxxxxxxxxxxx>

Better check the video_device pointer before using it.


diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c
index 6f36006..ef153ff 100644
--- a/drivers/media/video/v4l2-dev.c
+++ b/drivers/media/video/v4l2-dev.c
@@ -257,6 +257,9 @@ int video_register_device_index(struct video_device *vfd, int type, int nr,
	int ret;
	char *name_base;

+	if (vfd == NULL)
+		return -EINVAL;
+
	switch (type) {
	case VFL_TYPE_GRABBER:
		base = MINOR_VFL_TYPE_GRABBER_MIN;


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