From b36b505965e374b284166c2e6b9c1d369d663ea9 Mon Sep 17 00:00:00 2001
From: Hans de Goede
Date: Mon, 24 Oct 2011 05:03:27 -0300
Subject: [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(+)

(limited to 'drivers/media/video/v4l2-event.c')

diff --git a/drivers/media/video/v4l2-event.c b/drivers/media/video/v4l2-event.c
index 53b190cf225e..9f56f18d509f 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) {
-- 
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