scsi: megaraid_sas: Return pended IOCTLs with cmd_status MFI_STAT_WRONG_STATE...

scsi: megaraid_sas: Return pended IOCTLs with cmd_status MFI_STAT_WRONG_STATE in case adapter is dead

BugLink: http://bugs.launchpad.net/bugs/1721477

commit eb3fe263 upstream.

After a kill adapter, since the cmd_status is not set, the IOCTLs will
be hung in driver resulting in application hang.  Set cmd_status
MFI_STAT_WRONG_STATE when completing pended IOCTLs.
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>

drivers/scsi/megaraid/megaraid_sas_base.c

@@ -1914,9 +1914,12 @@ static void megasas_complete_outstanding_ioctls(struct megasas_instance *instanc
 			if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
 				cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
 				if (cmd_mfi->sync_cmd &&
-					cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)
+				    (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
+					cmd_mfi->frame->hdr.cmd_status =
+							MFI_STAT_WRONG_STATE;
 					megasas_complete_cmd(instance,
 							     cmd_mfi, DID_OK);
+				}
 			}
 		}
 	} else {