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[media] mt2063: use lib gcd

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This patch removes the local MT2063_gcd function, uses lib gcd instead

Signed-off-by: Zhaoxiu Zeng <zhaoxiu.zeng@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Zhaoxiu Zeng 2016-04-27 04:07:08 -03:00 committed by Mauro Carvalho Chehab
parent d10f89cc36
commit 917d11a4e0
1 changed files with 5 additions and 25 deletions
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30
drivers/media/tuners/mt2063.c
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@ -24,6 +24,7 @@
#include <linux/module.h>
#include <linux/string.h>
#include <linux/videodev2.h>
#include <linux/gcd.h>
#include "mt2063.h"
@ -664,27 +665,6 @@ static u32 MT2063_ChooseFirstIF(struct MT2063_AvoidSpursData_t *pAS_Info)
return f_Center + (bestDiff * f_Step);
}
/**
* gcd() - Uses Euclid's algorithm
*
* @u, @v: Unsigned values whose GCD is desired.
*
* Returns THE greatest common divisor of u and v, if either value is 0,
* the other value is returned as the result.
*/
static u32 MT2063_gcd(u32 u, u32 v)
{
u32 r;
while (v != 0) {
r = u % v;
u = v;
v = r;
}
return u;
}
/**
* IsSpurInBand() - Checks to see if a spur will be present within the IF's
* bandwidth. (fIFOut +/- fIFBW, -fIFOut +/- fIFBW)
@ -731,12 +711,12 @@ static u32 IsSpurInBand(struct MT2063_AvoidSpursData_t *pAS_Info,
** of f_LO1, f_LO2 and the edge value. Use the larger of this
** gcd-based scale factor or f_Scale.
*/
lo_gcd = MT2063_gcd(f_LO1, f_LO2);
gd_Scale = max((u32) MT2063_gcd(lo_gcd, d), f_Scale);
lo_gcd = gcd(f_LO1, f_LO2);
gd_Scale = max((u32) gcd(lo_gcd, d), f_Scale);
hgds = gd_Scale / 2;
gc_Scale = max((u32) MT2063_gcd(lo_gcd, c), f_Scale);
gc_Scale = max((u32) gcd(lo_gcd, c), f_Scale);
hgcs = gc_Scale / 2;
gf_Scale = max((u32) MT2063_gcd(lo_gcd, f), f_Scale);
gf_Scale = max((u32) gcd(lo_gcd, f), f_Scale);
hgfs = gf_Scale / 2;
n0 = DIV_ROUND_UP(f_LO2 - d, f_LO1 - f_LO2);