scsi: qedi: Mark all connections for recovery on link down event

scsi: qedi: Mark all connections for recovery on link down event

[ Upstream commit 4118879be3755b38171063dfd4a57611d4b20a83 ]

For short time cable pulls, the in-flight I/O to the firmware is never
cleaned up, resulting in the behaviour of stale I/O completion causing
list_del corruption and soft lockup of the system.

On link down event, mark all the connections for recovery, causing cleanup
of all the in-flight I/O immediately.

Link: https://lore.kernel.org/r/20200908095657.26821-7-mrangankar@marvell.com
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Manish Rangankar <mrangankar@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>