[PATCH 6/8] scsi: scsi-multipath: Maintain sdev->access_state

[John Garry]

Now that ALUA is supported, we can maintain sdev->access_state.

However, preferred_path is still not maintained as that that is related
to transitioning  state and we do not yet support that (for SCSI
multipath).

Signed-off-by: John Garry <john.g.garry@xxxxxxxxxx>
---
 drivers/scsi/scsi_multipath.c | 1 +
 drivers/scsi/scsi_sysfs.c     | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/scsi_multipath.c b/drivers/scsi/scsi_multipath.c
index 0a314080bf0a5..0c34b1151f5bf 100644
--- a/drivers/scsi/scsi_multipath.c
+++ b/drivers/scsi/scsi_multipath.c
@@ -772,6 +772,7 @@ int scsi_mpath_dev_alloc(struct scsi_device *sdev)
 	} else {
 		sdev->scsi_mpath_dev->alua_state = SCSI_ACCESS_STATE_OPTIMAL;
 	}
+	sdev->access_state = sdev->scsi_mpath_dev->alua_state;
 
 	sdev->scsi_mpath_dev->index = ida_alloc(&scsi_mpath_head->ida, GFP_KERNEL);
 	if (sdev->scsi_mpath_dev->index < 0) {
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 3b03ee00c8df3..e4fbf08e05f4f 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -1113,7 +1113,7 @@ sdev_show_access_state(struct device *dev,
 	unsigned char access_state;
 	const char *access_state_name;
 
-	if (!sdev->handler)
+	if (!sdev->handler && !sdev->scsi_mpath_dev)
 		return -EINVAL;
 
 	access_state = (sdev->access_state & SCSI_ACCESS_STATE_MASK);
-- 
2.43.5