From: Cyrill Gorcunov <gorcunov@gmail.com>
Date: Tue, 1 Apr 2008 20:49:13 +0000 (-0300)
Subject: V4L/DVB (7461): bttv: fix missed index check
X-Git-Tag: Ubuntu-5.4-5.4.0-11.14~37995^2~5
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=1a002ebf60c011ed6574b8e3ed9aa85f1ead6a95;p=mirror_ubuntu-focal-kernel.git

V4L/DVB (7461): bttv: fix missed index check

We should check for proper index first

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
---

diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c
index e68326f28097..fcf8f2d208a8 100644
--- a/drivers/media/video/bt8xx/bttv-driver.c
+++ b/drivers/media/video/bt8xx/bttv-driver.c
@@ -3518,8 +3518,12 @@ static int radio_enum_input(struct file *file, void *priv,
 static int radio_g_audio(struct file *file, void *priv,
 					struct v4l2_audio *a)
 {
+	if (a->index != 0)
+		return -EINVAL;
+
 	memset(a, 0, sizeof(*a));
 	strcpy(a->name, "Radio");
+
 	return 0;
 }