commit e0bfd149973d22a4330dd6665b54d1dcca07174a
author Tejun Heo <htejun@gmail.com> Mon Jan 23 16:31:53 2006 +0900
committer Jeff Garzik <jgarzik@pobox.com> Thu Jan 26 23:07:08 2006 -0500
tree b3c2fc9e3bc9a1ed4a3d677710c426e5a300105e
parent 9506437921504df18c6601f7d09bb23d72d2f6ba

[PATCH] ahci: stop engine during hard reset

AHCI spec mandates engine to be stopped during hard resets.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

drivers/scsi/ahci.c

diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index 5a6b230..2abc0ac 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -504,7 +504,9 @@
 	struct ata_device *dev = &ap->device[0];
 	u32 new_tmp, tmp;
 
+	ahci_stop_engine(ap);
 	__sata_phy_reset(ap);
+	ahci_start_engine(ap);
 
 	if (ap->flags & ATA_FLAG_PORT_DISABLED)
 		return;