From b36b505965e374b284166c2e6b9c1d369d663ea9 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Mon, 24 Oct 2011 05:03:27 -0300
Subject: [PATCH] [media] v4l2-event: Deny subscribing with a type of
V4L2_EVENT_ALL
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
drivers/media/video/v4l2-event.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/media/video/v4l2-event.c b/drivers/media/video/v4l2-event.c
index 53b190cf225e7..9f56f18d509fe 100644
--- a/drivers/media/video/v4l2-event.c
+++ b/drivers/media/video/v4l2-event.c
@@ -215,6 +215,9 @@ int v4l2_event_subscribe(struct v4l2_fh *fh,
unsigned long flags;
unsigned i;
+ if (sub->type == V4L2_EVENT_ALL)
+ return -EINVAL;
+
if (elems < 1)
elems = 1;
if (sub->type == V4L2_EVENT_CTRL) {