mpt3sas - remove unused fw_event_work elements

Firmware events are queued up using the fw_event_work's struct work, not
its delayed_work member.  The initial driver for SAS2 controllers had
handled firmware reset using the rescan barrier and was later redesigned
through "mpt2sas: [Resend] Host Reset code cleanup".  The delayed_work
variables are now unused and may provoke CONFIG_DEBUG_OBJECTS_TIMERS
"assert_init not available" false warnings in
_scsih_fw_event_cleanup_queue.

Cleanup fw_event_work's unused entries, update its kerneldoc, and
update _scsih_fw_event_cleanup_queue accordingly.

Fixes: 146b16c8071f (mpt3sas: Refcount fw_events and fix unsafe list usage)
Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com>
Acked-by: Chaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index e0e4920..f2139e5 100644 (file)
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -174,13 +174,13 @@ struct sense_info {
  * struct fw_event_work - firmware event struct
  * @list: link list framework
  * @work: work object (ioc->fault_reset_work_q)
- * @cancel_pending_work: flag set during reset handling
  * @ioc: per adapter object
  * @device_handle: device handle
  * @VF_ID: virtual function id
  * @VP_ID: virtual port id
  * @ignore: flag meaning this event has been marked to ignore
- * @event: firmware event MPI2_EVENT_XXX defined in mpt2_ioc.h
+ * @event: firmware event MPI2_EVENT_XXX defined in mpi2_ioc.h
+ * @refcount: kref for this event
  * @event_data: reply event data payload follows
  *
  * This object stored on ioc->fw_event_list.
@@ -188,8 +188,6 @@ struct sense_info {
 struct fw_event_work {
        struct list_head        list;
        struct work_struct      work;
-       u8                      cancel_pending_work;
-       struct delayed_work     delayed_work;
 
        struct MPT3SAS_ADAPTER *ioc;
        u16                     device_handle;
@@ -2804,12 +2802,12 @@ _scsih_fw_event_cleanup_queue(struct MPT3SAS_ADAPTER *ioc)
                /*
                 * Wait on the fw_event to complete. If this returns 1, then
                 * the event was never executed, and we need a put for the
-                * reference the delayed_work had on the fw_event.
+                * reference the work had on the fw_event.
                 *
                 * If it did execute, we wait for it to finish, and the put will
                 * happen from _firmware_event_work()
                 */
-               if (cancel_delayed_work_sync(&fw_event->delayed_work))
+               if (cancel_work_sync(&fw_event->work))
                        fw_event_work_put(fw_event);
 
                fw_event_work_put(fw_event);