• Tejun Heo's avatar
    libata: replace tf_read with qc_fill_rtf for non-SFF drivers · 4c9bf4e7
    Tejun Heo authored
    Now that all SFF stuff is separated out of core layer, core layer
    doesn't call ops->tf_read directly.  It gets called only via
    ops->qc_fill_rtf() for non-SFF drivers.  This patch directly
    implements private ops->qc_fill_rtf() for non-SFF controllers and kill
    ops->tf_read().
    
    This is much cleaner for non-SFF controllers as some of them have to
    cache SFF register values in private data structure and report the
    cached values via ops->tf_read().  Also, ops->tf_read() gets nasty for
    controllers which don't have clear notion of TF registers when
    operation is not in progress.
    
    As this change makes default ops->qc_fill_rtf unnecessary, move
    ata_sff_qc_fill_rtf() form ata_base_port_ops to ata_sff_port_ops where
    it belongs.
    Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
    4c9bf4e7
libata-sff.c 70 KB