tree 14c8706bb6a6a8135b12b66623e005df825b454f
parent b0bccb18bc523d1d5060d25958f12438062829a9
author Mark Lord <liml@rtr.ca> 1232406342 -0500
committer Jeff Garzik <jgarzik@redhat.com> 1232969813 -0500

sata_mv: don't read hc_irq_cause

Remove silly read-modify-write sequences when clearing interrupts
in hc_irq_cause.  This gets rid of unneeded MMIO reads, resulting in
a slight performance boost when switching between EDMA and non-EDMA
modes (eg. for cache flushes).

Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>