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[media] drxk_hard: fix locking issues when changing the delsys 

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2012-01-05 09:26:40 -02:00
parent fa4b2a171d
commit 6cb393c822
2 changed files with 24 additions and 22 deletions
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45
drivers/media/dvb/frontends/drxk_hard.c
View File

@ -6188,7 +6188,6 @@ static int drxk_sleep(struct dvb_frontend *fe)
dprintk(1, "\n");
ShutDown(state);
mutex_unlock(&state->ctlock);
return 0;
}
@ -6203,7 +6202,7 @@ static int drxk_gate_ctrl(struct dvb_frontend *fe, int enable)
static int drxk_set_parameters(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
u32 delsys = p->delivery_system;
u32 delsys = p->delivery_system, old_delsys;
struct drxk_state *state = fe->demodulator_priv;
u32 IF;
@ -6221,28 +6220,33 @@ static int drxk_set_parameters(struct dvb_frontend *fe)
fe->ops.tuner_ops.set_params(fe);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
old_delsys = state->props.delivery_system;
state->props = *p;
switch (delsys) {
case SYS_DVBC_ANNEX_A:
case SYS_DVBC_ANNEX_C:
if (!state->m_hasDVBC)
return -EINVAL;
state->m_itut_annex_c = (delsys == SYS_DVBC_ANNEX_C) ? true : false;
if (state->m_itut_annex_c)
SetOperationMode(state, OM_QAM_ITU_C);
else
SetOperationMode(state, OM_QAM_ITU_A);
if (old_delsys != delsys) {
ShutDown(state);
switch (delsys) {
case SYS_DVBC_ANNEX_A:
case SYS_DVBC_ANNEX_C:
if (!state->m_hasDVBC)
return -EINVAL;
state->m_itut_annex_c = (delsys == SYS_DVBC_ANNEX_C) ? true : false;
if (state->m_itut_annex_c)
SetOperationMode(state, OM_QAM_ITU_C);
else
SetOperationMode(state, OM_QAM_ITU_A);
break;
state->m_itut_annex_c = true;
break;
state->m_itut_annex_c = true;
break;
case SYS_DVBT:
if (!state->m_hasDVBT)
case SYS_DVBT:
if (!state->m_hasDVBT)
return -EINVAL;
SetOperationMode(state, OM_DVBT);
break;
default:
return -EINVAL;
SetOperationMode(state, OM_DVBT);
break;
default:
return -EINVAL;
}
}
fe->ops.tuner_ops.get_if_frequency(fe, &IF);
@ -6405,7 +6409,6 @@ struct dvb_frontend *drxk_attach(const struct drxk_config *config,
state->m_GPIO &= ~state->antenna_gpio;
mutex_init(&state->mutex);
mutex_init(&state->ctlock);
memcpy(&state->frontend.ops, &drxk_ops, sizeof(drxk_ops));
state->frontend.demodulator_priv = state;

1
drivers/media/dvb/frontends/drxk_hard.h
View File

@ -204,7 +204,6 @@ struct drxk_state {
void *priv;
struct mutex mutex;
struct mutex ctlock;
u32 m_Instance; /**< Channel 1,2,3 or 4 */