[PATCH #upstream-fixes 3/4] libata: when restoring SControl during detach do the PMP links first

[Tejun Heo <tj@kernel.org>]

When restoring SControl during detach, PMP links should be handled
first as changing SControl of the host link can affect SCR access of
PMP links.

Signed-off-by: Tejun Heo <tj@kernel.org>
---
 drivers/ata/libata-core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: work/drivers/ata/libata-core.c
===================================================================
--- work.orig/drivers/ata/libata-core.c
+++ work/drivers/ata/libata-core.c
@@ -6035,7 +6035,7 @@ static void ata_port_detach(struct ata_p
 	/* EH is now guaranteed to see UNLOADING - EH context belongs
 	 * to us.  Restore SControl and disable all existing devices.
 	 */
-	ata_for_each_link(link, ap, HOST_FIRST) {
+	ata_for_each_link(link, ap, PMP_FIRST) {
 		sata_scr_write(link, SCR_CONTROL, link->saved_scontrol);
 		ata_for_each_dev(dev, link, ALL)
 			ata_dev_disable(dev);