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cirrusfb: do not allow unsupported pixel depth

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Do not allow modes with unsupported pixel depth.  Otherwise, one can hang
a computer by setting incorrect value with fbset command.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Krzysztof Helt 2009-04-13 14:39:55 -07:00 committed by Linus Torvalds
parent 697f619fc8
commit 0efb2a03af
1 changed files with 1 additions and 3 deletions
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4
drivers/video/cirrusfb.c
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@ -567,9 +567,7 @@ static int cirrusfb_check_var(struct fb_var_screeninfo *var,
default:
dev_dbg(info->device,
"Unsupported bpp size: %d\n", var->bits_per_pixel);
assert(false);
/* should never occur */
break;
return -EINVAL;
}
if (var->xres_virtual < var->xres)