gbefb: unsigned var->pixclock cannot be less than 0
unsigned var->pixclock cannot be less than 0 Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -912,6 +912,7 @@ static int gbefb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
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{
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unsigned int line_length;
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struct gbe_timing_info timing;
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int ret;
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/* Limit bpp to 8, 16, and 32 */
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if (var->bits_per_pixel <= 8)
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@ -930,8 +931,10 @@ static int gbefb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
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var->grayscale = 0; /* No grayscale for now */
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if ((var->pixclock = compute_gbe_timing(var, &timing)) < 0)
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return(-EINVAL);
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ret = compute_gbe_timing(var, &timing);
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var->pixclock = ret;
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if (ret < 0)
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return -EINVAL;
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/* Adjust virtual resolution, if necessary */
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if (var->xres > var->xres_virtual || (!ywrap && !ypan))
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