[PATCH 01/10] libata-pmp: update ata_eh_reset() for PMP

[Tejun Heo <htejun@gmail.com>]

PMP always requires SRST to be enabled.  Also, hardreset reports
classification code from the first device when PMP is attached, not
from the PMP.  Update ata_eh_reset() such that followup softreset is
performed if the controller is PMP capable and the host link is being
reset.

Signed-off-by: Tejun Heo <htejun@gmail.com>
---
 drivers/ata/libata-eh.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index 60186f8..687419b 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2003,6 +2003,8 @@ static int ata_eh_followup_srst_needed(struct ata_link *link,
 		return 1;
 	if (rc != 0)
 		return 0;
+	if ((link->ap->flags & ATA_FLAG_PMP) && ata_is_host_link(link))
+		return 1;
 	if (classify && !(link->flags & ATA_LFLAG_ASSUME_CLASS) &&
 	    classes[0] == ATA_DEV_UNKNOWN)
 		return 1;
-- 
1.5.0.3