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V4L/DVB (5932): Af9005 fix tuner module unload

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This patch removes the useless tuner field and avoids a double free of 
the tuner (either mt2060 or qt1010).

Signed-off-by: Luca Olivetti <luca@ventoso.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Luca Olivetti 2007-07-27 10:27:47 -03:00 committed by Mauro Carvalho Chehab
parent be9a5c7d9a
commit 639ffd2d90
1 changed files with 12 additions and 25 deletions
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37
drivers/media/dvb/dvb-usb/af9005-fe.c
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@ -29,8 +29,6 @@
struct af9005_fe_state {
struct dvb_usb_device *d;
struct dvb_frontend *tuner;
fe_status_t stat;
/* retraining parameters */
@ -447,7 +445,7 @@ static int af9005_fe_read_status(struct dvb_frontend *fe, fe_status_t * stat)
u8 temp;
int ret;
if (state->tuner == NULL)
if (fe->ops.tuner_ops.release == NULL)
return -ENODEV;
*stat = 0;
@ -493,7 +491,7 @@ static int af9005_fe_read_status(struct dvb_frontend *fe, fe_status_t * stat)
static int af9005_fe_read_ber(struct dvb_frontend *fe, u32 * ber)
{
struct af9005_fe_state *state = fe->demodulator_priv;
if (state->tuner == NULL)
if (fe->ops.tuner_ops.release == NULL)
return -ENODEV;
af9005_fe_refresh_state(fe);
*ber = state->ber;
@ -503,7 +501,7 @@ static int af9005_fe_read_ber(struct dvb_frontend *fe, u32 * ber)
static int af9005_fe_read_unc_blocks(struct dvb_frontend *fe, u32 * unc)
{
struct af9005_fe_state *state = fe->demodulator_priv;
if (state->tuner == NULL)
if (fe->ops.tuner_ops.release == NULL)
return -ENODEV;
af9005_fe_refresh_state(fe);
*unc = state->unc;
@ -517,7 +515,7 @@ static int af9005_fe_read_signal_strength(struct dvb_frontend *fe,
int ret;
u8 if_gain, rf_gain;
if (state->tuner == NULL)
if (fe->ops.tuner_ops.release == NULL)
return -ENODEV;
ret =
af9005_read_ofdm_register(state->d, xd_r_reg_aagc_rf_gain,
@ -1041,7 +1039,7 @@ static int af9005_fe_init(struct dvb_frontend *fe)
return ret;
/* attach tuner and init */
if (state->tuner == NULL) {
if (fe->ops.tuner_ops.release == NULL) {
/* read tuner and board id from eeprom */
ret = af9005_read_eeprom(adap->dev, 0xc6, buf, 2);
if (ret) {
@ -1058,20 +1056,16 @@ static int af9005_fe_init(struct dvb_frontend *fe)
return ret;
}
if1 = (u16) (buf[0] << 8) + buf[1];
state->tuner =
dvb_attach(mt2060_attach, fe, &adap->dev->i2c_adap,
&af9005_mt2060_config, if1);
if (state->tuner == NULL) {
if (dvb_attach(mt2060_attach, fe, &adap->dev->i2c_adap,
&af9005_mt2060_config, if1) == NULL) {
deb_info("MT2060 attach failed\n");
return -ENODEV;
}
break;
case 3: /* QT1010 */
case 9: /* QT1010B */
state->tuner =
dvb_attach(qt1010_attach, fe, &adap->dev->i2c_adap,
&af9005_qt1010_config);
if (state->tuner == NULL) {
if (dvb_attach(qt1010_attach, fe, &adap->dev->i2c_adap,
&af9005_qt1010_config) ==NULL) {
deb_info("QT1010 attach failed\n");
return -ENODEV;
}
@ -1080,7 +1074,7 @@ static int af9005_fe_init(struct dvb_frontend *fe)
err("Unsupported tuner type %d", buf[0]);
return -ENODEV;
}
ret = state->tuner->ops.tuner_ops.init(state->tuner);
ret = fe->ops.tuner_ops.init(fe);
if (ret)
return ret;
}
@ -1118,7 +1112,7 @@ static int af9005_fe_set_frontend(struct dvb_frontend *fe,
deb_info("af9005_fe_set_frontend freq %d bw %d\n", fep->frequency,
fep->u.ofdm.bandwidth);
if (state->tuner == NULL) {
if (fe->ops.tuner_ops.release == NULL) {
err("Tuner not attached");
return -ENODEV;
}
@ -1199,7 +1193,7 @@ static int af9005_fe_set_frontend(struct dvb_frontend *fe,
return ret;
/* set tuner */
deb_info("set tuner\n");
ret = state->tuner->ops.tuner_ops.set_params(state->tuner, fep);
ret = fe->ops.tuner_ops.set_params(fe, fep);
if (ret)
return ret;
@ -1435,12 +1429,6 @@ static void af9005_fe_release(struct dvb_frontend *fe)
{
struct af9005_fe_state *state =
(struct af9005_fe_state *)fe->demodulator_priv;
if (state->tuner != NULL && state->tuner->ops.tuner_ops.release != NULL) {
state->tuner->ops.tuner_ops.release(state->tuner);
#ifdef CONFIG_DVB_CORE_ATTACH
symbol_put_addr(state->tuner->ops.tuner_ops.release);
#endif
}
kfree(state);
}
@ -1458,7 +1446,6 @@ struct dvb_frontend *af9005_fe_attach(struct dvb_usb_device *d)
deb_info("attaching frontend af9005\n");
state->d = d;
state->tuner = NULL;
state->opened = 0;
memcpy(&state->frontend.ops, &af9005_fe_ops,