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[media] DVB: dtv_property_cache_submit shouldn't modifiy the cache

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- Use const pointers and remove assignments.
- delivery_system already gets assigned by DTV_DELIVERY_SYSTEM
  and dtv_property_cache_sync.

Signed-off-by: Andreas Oberritter <obi@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Andreas Oberritter 2011-05-08 20:03:35 -03:00 committed by Mauro Carvalho Chehab
parent 7285d4cc2c
commit 15cc2bb385
1 changed files with 3 additions and 10 deletions
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13
drivers/media/dvb/dvb-core/dvb_frontend.c
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@ -1074,7 +1074,7 @@ static void dtv_property_cache_sync(struct dvb_frontend *fe,
*/
static void dtv_property_legacy_params_sync(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct dvb_frontend_private *fepriv = fe->frontend_priv;
struct dvb_frontend_parameters *p = &fepriv->parameters;
@ -1086,14 +1086,12 @@ static void dtv_property_legacy_params_sync(struct dvb_frontend *fe)
dprintk("%s() Preparing QPSK req\n", __func__);
p->u.qpsk.symbol_rate = c->symbol_rate;
p->u.qpsk.fec_inner = c->fec_inner;
c->delivery_system = SYS_DVBS;
break;
case FE_QAM:
dprintk("%s() Preparing QAM req\n", __func__);
p->u.qam.symbol_rate = c->symbol_rate;
p->u.qam.fec_inner = c->fec_inner;
p->u.qam.modulation = c->modulation;
c->delivery_system = SYS_DVBC_ANNEX_AC;
break;
case FE_OFDM:
dprintk("%s() Preparing OFDM req\n", __func__);
@ -1111,15 +1109,10 @@ static void dtv_property_legacy_params_sync(struct dvb_frontend *fe)
p->u.ofdm.transmission_mode = c->transmission_mode;
p->u.ofdm.guard_interval = c->guard_interval;
p->u.ofdm.hierarchy_information = c->hierarchy;
c->delivery_system = SYS_DVBT;
break;
case FE_ATSC:
dprintk("%s() Preparing VSB req\n", __func__);
p->u.vsb.modulation = c->modulation;
if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
c->delivery_system = SYS_ATSC;
else
c->delivery_system = SYS_DVBC_ANNEX_B;
break;
}
}
@ -1129,7 +1122,7 @@ static void dtv_property_legacy_params_sync(struct dvb_frontend *fe)
*/
static void dtv_property_adv_params_sync(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct dvb_frontend_private *fepriv = fe->frontend_priv;
struct dvb_frontend_parameters *p = &fepriv->parameters;
@ -1170,7 +1163,7 @@ static void dtv_property_adv_params_sync(struct dvb_frontend *fe)
static void dtv_property_cache_submit(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
/* For legacy delivery systems we don't need the delivery_system to
* be specified, but we populate the older structures from the cache