• Andy Lutomirski's avatar
    uvesafb: Clean up MTRR code · 63e28a7a
    Andy Lutomirski authored
    The old code allowed very strange memory types.  Now it works like
    all the other video drivers: ioremap_wc is used unconditionally,
    and MTRRs are set if PAT is unavailable (unless MTRR is disabled
    by a module parameter).
    UC, WB, and WT support is gone.  If there are MTRR conflicts that prevent
    addition of a WC MTRR, adding a non-conflicting MTRR is pointless; it's
    better to just turn off MTRR support entirely.
    As an added bonus, any MTRR added is freed on unload.
    Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
    Signed-off-by: default avatarAndy Lutomirski <luto@amacapital.net>
    Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
uvesafb.txt 6.73 KB