[PATCH 1/2] Revert "[SCSI] mpt2sas: Remove phys on topology change."

From: Sreekanth Reddy
Date: Tue Dec 02 2014 - 10:29:18 EST

This reverts commit 3520f9c779bed098ca76dd3fb6377264301d57ed
("mpt2sas: Remove phys on topology change")

Reverting the previous mpt2sas drives patch changes,
since we will observe below issue

Drives connected Enclosure/Expander will unregister with
SCSI Transport Layer, if any one remove and add expander
cable with in DMD (Device Missing Delay) time period or
even any one power-off and power-on the Enclosure with in
the DMD period.

Cc: <stable@xxxxxxxxxxxxxxx>
Cc: Tomas Henzl <thenzl@xxxxxxxxxx>
Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@xxxxxxxxxxxxx>
drivers/scsi/mpt2sas/mpt2sas_transport.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/scsi/mpt2sas/mpt2sas_transport.c b/drivers/scsi/mpt2sas/mpt2sas_transport.c
index 0d1d064..e689bf2 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_transport.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_transport.c
@@ -1006,12 +1006,9 @@ mpt2sas_transport_update_links(struct MPT2SAS_ADAPTER *ioc,
_transport_add_phy_to_an_existing_port(ioc, sas_node,
mpt2sas_phy, mpt2sas_phy->remote_identify.sas_address);
- } else {
+ } else
memset(&mpt2sas_phy->remote_identify, 0 , sizeof(struct
- _transport_del_phy_from_an_existing_port(ioc, sas_node,
- mpt2sas_phy);
- }

if (mpt2sas_phy->phy)
mpt2sas_phy->phy->negotiated_linkrate =

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