rtl8188eu: Replace semaphore terminate_cmdthread_sema with completion

The semaphore 'terminate_cmdthread_sema' is used as completion,
so convert it to struct completion.
Signed-off-by: Binoy Jayan <binoy.jayan@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/core/rtw_cmd.c

@@ -28,7 +28,7 @@ No irqsave is necessary.
 int rtw_init_cmd_priv(struct cmd_priv *pcmdpriv)
 {
 	init_completion(&pcmdpriv->cmd_queue_comp);
-	sema_init(&(pcmdpriv->terminate_cmdthread_sema), 0);
+	init_completion(&pcmdpriv->terminate_cmdthread_comp);
 
 	_rtw_init_queue(&(pcmdpriv->cmd_queue));
 	return _SUCCESS;
@@ -162,7 +162,7 @@ int rtw_cmd_thread(void *context)
 	allow_signal(SIGTERM);
 
 	pcmdpriv->cmdthd_running = true;
-	up(&pcmdpriv->terminate_cmdthread_sema);
+	complete(&pcmdpriv->terminate_cmdthread_comp);
 
 	RT_TRACE(_module_rtl871x_cmd_c_, _drv_info_, ("start r871x rtw_cmd_thread !!!!\n"));
 
@@ -234,7 +234,7 @@ int rtw_cmd_thread(void *context)
 		rtw_free_cmd_obj(pcmd);
 	}
 
-	up(&pcmdpriv->terminate_cmdthread_sema);
+	complete(&pcmdpriv->terminate_cmdthread_comp);
 
 
 	complete_and_exit(NULL, 0);

drivers/staging/rtl8188eu/include/rtw_cmd.h

@@ -40,7 +40,7 @@ struct cmd_obj {
 
 struct cmd_priv {
 	struct completion cmd_queue_comp;
-	struct semaphore terminate_cmdthread_sema;
+	struct completion terminate_cmdthread_comp;
 	struct __queue cmd_queue;
 	u8 cmdthd_running;
 	struct adapter *padapter;

drivers/staging/rtl8188eu/os_dep/os_intfs.c

@@ -762,7 +762,7 @@ static int rtw_start_drv_threads(struct adapter *padapter)
 		err = PTR_ERR(padapter->cmdThread);
 	else
 		/* wait for cmd_thread to run */
-		_rtw_down_sema(&padapter->cmdpriv.terminate_cmdthread_sema);
+		wait_for_completion_interruptible(&padapter->cmdpriv.terminate_cmdthread_comp);
 
 	return err;
 }
@@ -774,7 +774,7 @@ void rtw_stop_drv_threads(struct adapter *padapter)
 	/* Below is to terminate rtw_cmd_thread & event_thread... */
 	complete(&padapter->cmdpriv.cmd_queue_comp);
 	if (padapter->cmdThread)
-		_rtw_down_sema(&padapter->cmdpriv.terminate_cmdthread_sema);
+		wait_for_completion_interruptible(&padapter->cmdpriv.terminate_cmdthread_comp);
 
 }