• Russell King's avatar
    [ARM] Fix broken sl82c105 DMA prevention · 9648f552
    Russell King authored
    We must _never_ _ever_ on pain of death enable IDE DMA on SL82C105
    chipsets where the southbridge revision is <= 5, otherwise data
    corruption will occur.
    Strangely this used to work, but something has changed in the upper
    echelons of the IDE layer to break the hosts decision to deny DMA.
    Let's make it crystal clear to the IDE layer that we know best.
    Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
sl82c105.c 12.4 KB