Staging: rtl8712: Eliminate use of _cancel_timer_ex

Use timer API function del_timer_sync instead of driver
specific function _cancel_timer_ex as besides deactivating
a timer, it ensures that the timer is stopped on all
CPUs before the driver exists. Also, definition of function
_cancel_timer_ex is removed as it is no longer needed after
this change.

This is done using Coccinelle and semantic patch used for
this is as follows:

@@ expression x; @@

- _cancel_timer_ex (&x);
+ del_timer_sync (&x);

Signed-off-by: Vaishali Thakkar <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: v-thakkar

drivers/staging/rtl8712/os_intfs.c

@@ -263,13 +263,12 @@ static void start_drv_timers(struct _adapter *padapter)
 
 void r8712_stop_drv_timers(struct _adapter *padapter)
 {
-	_cancel_timer_ex(&padapter->mlmepriv.assoc_timer);
-	_cancel_timer_ex(&padapter->securitypriv.tkip_timer);
-	_cancel_timer_ex(&padapter->mlmepriv.scan_to_timer);
-	_cancel_timer_ex(&padapter->mlmepriv.dhcp_timer);
-	_cancel_timer_ex(&padapter->mlmepriv.wdg_timer);
-	_cancel_timer_ex(&padapter->mlmepriv.sitesurveyctrl.
-			 sitesurvey_ctrl_timer);
+	del_timer_sync(&padapter->mlmepriv.assoc_timer);
+	del_timer_sync(&padapter->securitypriv.tkip_timer);
+	del_timer_sync(&padapter->mlmepriv.scan_to_timer);
+	del_timer_sync(&padapter->mlmepriv.dhcp_timer);
+	del_timer_sync(&padapter->mlmepriv.wdg_timer);
+	del_timer_sync(&padapter->mlmepriv.sitesurveyctrl.sitesurvey_ctrl_timer);
 }
 
 static u8 init_default_value(struct _adapter *padapter)

drivers/staging/rtl8712/osdep_service.h

@@ -92,11 +92,6 @@ static inline void sleep_schedulable(int ms)
 	schedule_timeout(delta);
 }
 
-static inline unsigned char _cancel_timer_ex(struct timer_list *ptimer)
-{
-	return del_timer(ptimer);
-}
-
 static inline void flush_signals_thread(void)
 {
 	if (signal_pending(current))