sata_mv: don't read hc_irq_cause

Browse source

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>

...

This commit is contained in:

Mark Lord 2009-01-19 18:05:42 -05:00 • committed by Jeff Garzik

parent b0bccb18bc

commit cae6edc3b5

1 changed files with 5 additions and 12 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

17

drivers/ata/sata_mv.c

View file