• Jeff Garzik's avatar
    ahci: work around ATI SB600 h/w quirk · a878539e
    Jeff Garzik authored
    This addresses the recent ATI SB600 errata, where the hardware does
    not like 256-length PRD entries during FPDMA (aka NCQ).
    
    It hurts performance on SB600, but it is more important to get a
    correct patch eliminating the data corruption/lockups, and then later
    on tune for performance.
    
    We simply limit each command to a maximum of 255 sectors, on SB600.
    Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
    a878539e
ahci.c 63.1 KB