From: Antti Palosaari <crope@iki.fi>
Date: Sat, 22 Sep 2012 02:36:27 +0000 (-0300)
Subject: [media] fc2580: fix crash when attach fails
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=ef40c0088ecbc8863c9404c96065269c83c16259;p=openwrt%2Fstaging%2Fblogic.git

[media] fc2580: fix crash when attach fails

Callbacks were set even attach failed. This leads calling
.release() in error case and resulted crash.

Reported-by: Oliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/tuners/fc2580.c b/drivers/media/tuners/fc2580.c
index 7db32ec4bd09..ec7965d7c2f8 100644
--- a/drivers/media/tuners/fc2580.c
+++ b/drivers/media/tuners/fc2580.c
@@ -487,9 +487,6 @@ struct dvb_frontend *fc2580_attach(struct dvb_frontend *fe,
 
 	priv->cfg = cfg;
 	priv->i2c = i2c;
-	fe->tuner_priv = priv;
-	memcpy(&fe->ops.tuner_ops, &fc2580_tuner_ops,
-			sizeof(struct dvb_tuner_ops));
 
 	/* check if the tuner is there */
 	ret = fc2580_rd_reg(priv, 0x01, &chip_id);
@@ -510,6 +507,10 @@ struct dvb_frontend *fc2580_attach(struct dvb_frontend *fe,
 			"%s: FCI FC2580 successfully identified\n",
 			KBUILD_MODNAME);
 
+	fe->tuner_priv = priv;
+	memcpy(&fe->ops.tuner_ops, &fc2580_tuner_ops,
+			sizeof(struct dvb_tuner_ops));
+
 	if (fe->ops.i2c_gate_ctrl)
 		fe->ops.i2c_gate_ctrl(fe, 0);