video: fbdev: matroxfb: remove dead code and set but not used variable
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
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@ -333,11 +333,9 @@ static int __g450_setclk(struct matrox_fb_info *minfo, unsigned int fout,
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unsigned int *deltaarray)
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{
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unsigned int mnpcount;
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unsigned int pixel_vco;
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const struct matrox_pll_limits* pi;
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struct matrox_pll_cache* ci;
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pixel_vco = 0;
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switch (pll) {
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case M_PIXEL_PLL_A:
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case M_PIXEL_PLL_B:
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@ -420,7 +418,6 @@ static int __g450_setclk(struct matrox_fb_info *minfo, unsigned int fout,
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mnp = matroxfb_DAC_in(minfo, M1064_XPIXPLLCM) << 16;
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mnp |= matroxfb_DAC_in(minfo, M1064_XPIXPLLCN) << 8;
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pixel_vco = g450_mnp2vco(minfo, mnp);
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matroxfb_DAC_unlock_irqrestore(flags);
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}
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pi = &minfo->limits.video;
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@ -441,25 +438,6 @@ static int __g450_setclk(struct matrox_fb_info *minfo, unsigned int fout,
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unsigned int delta;
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vco = g450_mnp2vco(minfo, mnp);
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#if 0
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if (pll == M_VIDEO_PLL) {
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unsigned int big, small;
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if (vco < pixel_vco) {
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small = vco;
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big = pixel_vco;
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} else {
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small = pixel_vco;
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big = vco;
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}
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while (big > small) {
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big >>= 1;
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}
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if (big == small) {
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continue;
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}
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}
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#endif
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delta = pll_freq_delta(fout, g450_vco2f(mnp, vco));
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for (idx = mnpcount; idx > 0; idx--) {
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/* == is important; due to nextpll algorithm we get
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