From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Thu, 11 Apr 2013 16:25:10 +0000 (-0300)
Subject: [media] r820t: Don't put it in standby if not initialized yet
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=064fd169c508ce20e35babdd82946dab7219ccc5;p=deliverable%2Flinux.git

[media] r820t: Don't put it in standby if not initialized yet

r820t_standby() can be called before r820t_init().
If that happens, just do nothing.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Tested-by: Antti Palosaari <crope@iki.fi>
---

diff --git a/drivers/media/tuners/r820t.c b/drivers/media/tuners/r820t.c
index fc660f27edb3..b679a3f1fb7a 100644
--- a/drivers/media/tuners/r820t.c
+++ b/drivers/media/tuners/r820t.c
@@ -1298,6 +1298,10 @@ static int r820t_standby(struct r820t_priv *priv)
 {
 	int rc;
 
+	/* If device was not initialized yet, don't need to standby */
+	if (!priv->init_done)
+		return 0;
+
 	rc = r820t_write_reg(priv, 0x06, 0xb1);
 	if (rc < 0)
 		return rc;