tree b93baa50731ef128b13a01b0319f9b0bc7e76112
parent d3fd2e2bc29b1f0979352994f9035359003461c3
author Marcin Tomczak <marcin.tomczak@intel.com> 1325669595 -0800
committer James Bottomley <JBottomley@Parallels.com> 1326699919 +0400

[SCSI] isci: Fix IO fails when pull cable from phy in x4 wideport in MPC mode.

Failure seen pulling a cable from a x4 port configured in manual port
configuration (MPC) mode (MPC mode is set by the the OEM paramaters
provided by the platform or isci_firmware.bin).  While IO running to
devices behind and expander, plugging out the cable from phy is causing
IO failures and IO drops on disks and never recover.

It happens because during link up/down the phy were being taken out of
the port.

Fix: during link down the phy is kept in the same logical port.

Signed-off-by: Marcin Tomczak <marcin.tomczak@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>