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media: dvb-frontends: lgdt3306a.c: remove dead code

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Fix the following coccinelle report:

drivers/media/dvb-frontends/lgdt3306a.c:718:5-8:
Unneeded variable: "ret". Return "0" on line 744

Code was enclosed with #if 0 and thus this variable was not needed.
Remove that function altogether.

The  lgdt3306a_spectral_inversion function was dropped completely
since the function doesn't do anything. A comment was left at its
calling site to let others know that spectral_inversion defaults
already set for VSB and QAM

Found using - Coccinelle (http://coccinelle.lip6.fr)

Link: https://lore.kernel.org/linux-media/20200903131311.442255-1-dwlsalmeida@gmail.com
Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Daniel W. S. Almeida 2020-09-03 15:13:09 +02:00 committed by Mauro Carvalho Chehab
parent 6045b01dd0
commit d4a3fa6652
1 changed files with 2 additions and 35 deletions
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37
drivers/media/dvb-frontends/lgdt3306a.c
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@ -711,39 +711,6 @@ static int lgdt3306a_set_inversion_auto(struct lgdt3306a_state *state,
return ret;
}
static int lgdt3306a_spectral_inversion(struct lgdt3306a_state *state,
struct dtv_frontend_properties *p,
int inversion)
{
int ret = 0;
dbg_info("(%d)\n", inversion);
#if 0
/*
* FGR - spectral_inversion defaults already set for VSB and QAM;
* can enable later if desired
*/
ret = lgdt3306a_set_inversion(state, inversion);
switch (p->modulation) {
case VSB_8:
/* Manual only for VSB */
ret = lgdt3306a_set_inversion_auto(state, 0);
break;
case QAM_64:
case QAM_256:
case QAM_AUTO:
/* Auto ok for QAM */
ret = lgdt3306a_set_inversion_auto(state, 1);
break;
default:
ret = -EINVAL;
}
#endif
return ret;
}
static int lgdt3306a_set_if(struct lgdt3306a_state *state,
struct dtv_frontend_properties *p)
{
@ -1048,8 +1015,8 @@ static int lgdt3306a_set_parameters(struct dvb_frontend *fe)
if (lg_chkerr(ret))
goto fail;
ret = lgdt3306a_spectral_inversion(state, p,
state->cfg->spectral_inversion ? 1 : 0);
/* spectral_inversion defaults already set for VSB and QAM */
if (lg_chkerr(ret))
goto fail;