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[media] mxl5005s: fix compiler warning

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Removed the unused Xtal_Int variable. That made it also possible to remove a
related function. However, the code of that function has been preserved in a
comment describing an equation. Without that function that comment would
have been hard to understand.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2011-08-25 10:10:32 -03:00 committed by Mauro Carvalho Chehab
parent 2122eaf64a
commit d3bcaf083b
1 changed files with 10 additions and 12 deletions
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22
drivers/media/common/tuners/mxl5005s.c
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@ -309,7 +309,6 @@ static u16 MXL_ControlWrite_Group(struct dvb_frontend *fe, u16 controlNum,
static u16 MXL_SetGPIO(struct dvb_frontend *fe, u8 GPIO_Num, u8 GPIO_Val);
static u16 MXL_GetInitRegister(struct dvb_frontend *fe, u8 *RegNum,
u8 *RegVal, int *count);
static u32 MXL_GetXtalInt(u32 Xtal_Freq);
static u16 MXL_TuneRF(struct dvb_frontend *fe, u32 RF_Freq);
static void MXL_SynthIFLO_Calc(struct dvb_frontend *fe);
static void MXL_SynthRFTGLO_Calc(struct dvb_frontend *fe);
@ -2307,14 +2306,6 @@ static u16 MXL_IFSynthInit(struct dvb_frontend *fe)
return status ;
}
static u32 MXL_GetXtalInt(u32 Xtal_Freq)
{
if ((Xtal_Freq % 1000000) == 0)
return (Xtal_Freq / 10000);
else
return (((Xtal_Freq / 1000000) + 1)*100);
}
static u16 MXL_TuneRF(struct dvb_frontend *fe, u32 RF_Freq)
{
struct mxl5005s_state *state = fe->tuner_priv;
@ -2324,13 +2315,10 @@ static u16 MXL_TuneRF(struct dvb_frontend *fe, u32 RF_Freq)
u32 Kdbl_RF = 2;
u32 tg_divval;
u32 tg_lo;
u32 Xtal_Int;
u32 Fref_TG;
u32 Fvco;
Xtal_Int = MXL_GetXtalInt(state->Fxtal);
state->RF_IN = RF_Freq;
MXL_SynthRFTGLO_Calc(fe);
@ -2779,6 +2767,16 @@ static u16 MXL_TuneRF(struct dvb_frontend *fe, u32 RF_Freq)
tg_lo = (((Fmax/10 - Fvco)/100)*32) / ((Fmax-Fmin)/1000)+8;
/* below equation is same as above but much harder to debug.
*
* static u32 MXL_GetXtalInt(u32 Xtal_Freq)
* {
* if ((Xtal_Freq % 1000000) == 0)
* return (Xtal_Freq / 10000);
* else
* return (((Xtal_Freq / 1000000) + 1)*100);
* }
*
* u32 Xtal_Int = MXL_GetXtalInt(state->Fxtal);
* tg_lo = ( ((Fmax/10000 * Xtal_Int)/100) -
* ((state->TG_LO/10000)*divider_val *
* (state->Fxtal/10000)/100) )*32/((Fmax-Fmin)/10000 *