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authorBrett Russ <russb@emc.com>2005-03-28 15:10:27 -0500
committerJeff Garzik <jgarzik@pobox.com>2005-05-15 19:00:51 -0400
commitcdcca89e1a90fa9112260bd6384f20fcc4280e21 (patch)
tree303ddceb3a324067c6a18ec00b8643d313eb71e4 /drivers/scsi/libata-core.c
parent21b1ed74ee3667dcabcba92e486988ea9119a085 (diff)
[PATCH] libata: flush COMRESET set and clear
Updated patch to fix erroneous flush of COMRESET set and missing flush of COMRESET clear. Created a new routine scr_write_flush() to try to prevent this in the future. Also, this patch is based on libata-2.6 instead of the previous libata-dev-2.6 based patch. Signed-off-by: Brett Russ <russb@emc.com> Index: libata-2.6/drivers/scsi/libata-core.c ===================================================================
Diffstat (limited to 'drivers/scsi/libata-core.c')
-rw-r--r--drivers/scsi/libata-core.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index f70935cba173..ee9b96da841e 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -1253,11 +1253,11 @@ void __sata_phy_reset(struct ata_port *ap)
unsigned long timeout = jiffies + (HZ * 5);
if (ap->flags & ATA_FLAG_SATA_RESET) {
- scr_write(ap, SCR_CONTROL, 0x301); /* issue phy wake/reset */
- scr_read(ap, SCR_STATUS); /* dummy read; flush */
+ /* issue phy wake/reset */
+ scr_write_flush(ap, SCR_CONTROL, 0x301);
udelay(400); /* FIXME: a guess */
}
- scr_write(ap, SCR_CONTROL, 0x300); /* issue phy wake/clear reset */
+ scr_write_flush(ap, SCR_CONTROL, 0x300); /* phy wake/clear reset */
/* wait for phy to become ready, if necessary */
do {

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