diff options
| author | Mark Lord <liml@rtr.ca> | 2009-01-19 18:05:42 -0500 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2009-01-26 06:36:53 -0500 |
| commit | cae6edc3b5a536119374a5439d9b253cb26f05e1 (patch) | |
| tree | 14c8706bb6a6a8135b12b66623e005df825b454f /drivers/scsi/libsas/sas_init.c | |
| parent | b0bccb18bc523d1d5060d25958f12438062829a9 (diff) | |
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>
Diffstat (limited to 'drivers/scsi/libsas/sas_init.c')
0 files changed, 0 insertions, 0 deletions