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[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>
This commit is contained in:
Antti Palosaari 2012-09-21 23:36:27 -03:00 committed by Mauro Carvalho Chehab
parent 2a858486e0
commit ef40c0088e
1 changed files with 4 additions and 3 deletions
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7
drivers/media/tuners/fc2580.c
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@ -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);