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| author | Antonino A. Daplas <adaplas@gmail.com> | 2006-03-31 02:31:54 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-31 12:19:00 -0800 |
| commit | a536093a2f07007aa572e922752b7491b9ea8ff2 (patch) | |
| tree | 72f1036242f91ac77fbeb6b41c633af76e3d7358 /include/linux/fb.h | |
| parent | 2cbbb3b59c3ccdc55ad0c924fb49e09a962bb517 (diff) | |
| download | lwn-a536093a2f07007aa572e922752b7491b9ea8ff2.tar.gz lwn-a536093a2f07007aa572e922752b7491b9ea8ff2.zip | |
[PATCH] fbcon: Fix big-endian bogosity in slow_imageblit()
The monochrome->color expansion routine that handles bitmaps which have
(widths % 8) != 0 (slow_imageblit) produces corrupt characters in big-endian.
This is caused by a bogus bit test in slow_imageblit().
Fix.
This patch may deserve to go to the stable tree. The code has already been
well tested in little-endian machines. It's only in big-endian where there is
uncertainty and Herbert confirmed that this is the correct way to go.
It should not introduce regressions.
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Acked-by: Herbert Poetzl <herbert@13thfloor.at>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/fb.h')
| -rw-r--r-- | include/linux/fb.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/fb.h b/include/linux/fb.h index d03fadfcafe3..315d89740ddf 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -839,12 +839,10 @@ struct fb_info { #define FB_LEFT_POS(bpp) (32 - bpp) #define FB_SHIFT_HIGH(val, bits) ((val) >> (bits)) #define FB_SHIFT_LOW(val, bits) ((val) << (bits)) -#define FB_BIT_NR(b) (7 - (b)) #else #define FB_LEFT_POS(bpp) (0) #define FB_SHIFT_HIGH(val, bits) ((val) << (bits)) #define FB_SHIFT_LOW(val, bits) ((val) >> (bits)) -#define FB_BIT_NR(b) (b) #endif /* |