mwifiex: reduce spinlock usage in main process

We will reset more_task_flag at the end of main process
routine. This optimization will help to remove spinlock
operations at couple of places in the code.

Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c
index 03a95c7..213aa98 100644 (file)
--- a/drivers/net/wireless/mwifiex/main.c
+++ b/drivers/net/wireless/mwifiex/main.c
@@ -231,11 +231,10 @@ int mwifiex_main_process(struct mwifiex_adapter *adapter)
                goto exit_main_proc;
        } else {
                adapter->mwifiex_processing = true;
+               spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
        }
 process_start:
        do {
-               adapter->more_task_flag = false;
-               spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
                if ((adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) ||
                    (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY))
                        break;
@@ -275,7 +274,6 @@ process_start:
                        adapter->pm_wakeup_fw_try = true;
                        mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
                        adapter->if_ops.wakeup(adapter);
-                       spin_lock_irqsave(&adapter->main_proc_lock, flags);
                        continue;
                }
 
@@ -335,7 +333,6 @@ process_start:
                    (adapter->ps_state == PS_STATE_PRE_SLEEP) ||
                    (adapter->ps_state == PS_STATE_SLEEP_CFM) ||
                    adapter->tx_lock_flag){
-                       spin_lock_irqsave(&adapter->main_proc_lock, flags);
                        continue;
                }
 
@@ -386,12 +383,14 @@ process_start:
                        }
                        break;
                }
-               spin_lock_irqsave(&adapter->main_proc_lock, flags);
        } while (true);
 
        spin_lock_irqsave(&adapter->main_proc_lock, flags);
-       if (adapter->more_task_flag)
+       if (adapter->more_task_flag) {
+               adapter->more_task_flag = false;
+               spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
                goto process_start;
+       }
        adapter->mwifiex_processing = false;
        spin_unlock_irqrestore(&adapter->main_proc_lock, flags);