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    SubjectRe: [PATCH v2] fbdev: fix fillrect for 24bpp modes
    On Sat, 18 Apr 2009 20:52:34 +0200
    Michal Januszewski <> wrote:

    > The software fillrect routines do not work properly when the number of
    > pixels per machine word is not an integer. To see that, run the following
    > command on a fbdev console with a 24bpp video mode, using a non-accelerated
    > driver such as (u)vesafb:
    > reset ; echo -e '\e[41mtest\e[K'
    > The expected result is 'test' displayed on a line with red background.
    > Instead of that, 'test' has a red background, but the rest of the line
    > (rendered using fillrect()) contains a distored colorful pattern.
    > This patch fixes the problem by correctly computing rotation shifts.
    > It has been tested in a 24bpp mode on 32- and 64-bit little-endian
    > machines.
    > Signed-off-by: Michał Januszewski <>
    > ---

    I have tested the patch and it has worked with padded lines.

    Acked-by: Krzysztof Helt <>

    However, there is a comment from Andrew Morton.


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