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video: fbdev: matroxfb: remove dead code and set but not used variable

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Fix the following gcc warning:

drivers/video/fbdev/matrox/g450_pll.c:336:15: warning: variable
‘pixel_vco’ set but not used [-Wunused-but-set-variable]
  unsigned int pixel_vco;
               ^~~~~~~~~

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200403021609.20968-1-yanaijie@huawei.com
This commit is contained in:
Jason Yan 2020-04-03 10:16:09 +08:00 committed by Sam Ravnborg
parent 6ea4383b92
commit 7b987887f9
1 changed files with 0 additions and 22 deletions
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22
drivers/video/fbdev/matrox/g450_pll.c
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@ -333,11 +333,9 @@ static int __g450_setclk(struct matrox_fb_info *minfo, unsigned int fout,
unsigned int *deltaarray)
{
unsigned int mnpcount;
unsigned int pixel_vco;
const struct matrox_pll_limits* pi;
struct matrox_pll_cache* ci;
pixel_vco = 0;
switch (pll) {
case M_PIXEL_PLL_A:
case M_PIXEL_PLL_B:
@ -420,7 +418,6 @@ static int __g450_setclk(struct matrox_fb_info *minfo, unsigned int fout,
mnp = matroxfb_DAC_in(minfo, M1064_XPIXPLLCM) << 16;
mnp |= matroxfb_DAC_in(minfo, M1064_XPIXPLLCN) << 8;
pixel_vco = g450_mnp2vco(minfo, mnp);
matroxfb_DAC_unlock_irqrestore(flags);
}
pi = &minfo->limits.video;
@ -441,25 +438,6 @@ static int __g450_setclk(struct matrox_fb_info *minfo, unsigned int fout,
unsigned int delta;
vco = g450_mnp2vco(minfo, mnp);
#if 0
if (pll == M_VIDEO_PLL) {
unsigned int big, small;
if (vco < pixel_vco) {
small = vco;
big = pixel_vco;
} else {
small = pixel_vco;
big = vco;
}
while (big > small) {
big >>= 1;
}
if (big == small) {
continue;
}
}
#endif
delta = pll_freq_delta(fout, g450_vco2f(mnp, vco));
for (idx = mnpcount; idx > 0; idx--) {
/* == is important; due to nextpll algorithm we get