[SCSI] mpt fusion: Firmware event implementation using seperate WorkQueue

Now Firmware events are handled by firmware event queue.
Previously it was handled in interrupt context/WorkQueue of Linux.
Firmware Event handling is restructured and optimized.

Signed-off-by: Kashyap Desai <kadesai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index ae203eca831f..d67b26378a52 100644
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -1931,6 +1931,11 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
          */
         mpt_detect_bound_ports(ioc, pdev);
 
+        INIT_LIST_HEAD(&ioc->fw_event_list);
+        spin_lock_init(&ioc->fw_event_lock);
+        snprintf(ioc->fw_event_q_name, 20, "mpt/%d", ioc->id);
+        ioc->fw_event_q = create_singlethread_workqueue(ioc->fw_event_q_name);
+
         if ((r = mpt_do_ioc_recovery(ioc, MPT_HOSTEVENT_IOC_BRINGUP,
             CAN_SLEEP)) != 0){
                 printk(MYIOC_s_ERR_FMT "didn't initialize properly! (%d)\n",
@@ -2010,6 +2015,11 @@ mpt_detach(struct pci_dev *pdev)
         cancel_delayed_work(&ioc->fault_reset_work);
         destroy_workqueue(wq);
 
+        spin_lock_irqsave(&ioc->fw_event_lock, flags);
+        wq = ioc->fw_event_q;
+        ioc->fw_event_q = NULL;
+        spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
+        destroy_workqueue(wq);
 
         sprintf(pname, MPT_PROCFS_MPTBASEDIR "/%s/summary", ioc->name);
         remove_proc_entry(pname, NULL);