staging: r8712u: Simplify semaphores

I am preparing to convert this driver from semaphore to mutex locking,
The first step has been to eliminate a number of semaphores that were
initialized but never used, and one whose only use was a single "up"
after initialization. A total of 9 semaphores were removed in this process.

One other change was to remove some inline semaphore routines that were
unused.

In addition, several cases had the following structure:

down()
if () {
   ...
}
up()

The locking overhead was reduced by moving the up/down inside the if
block.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 17 deletions

diff --git a/drivers/staging/rtl8712/osdep_service.h b/drivers/staging/rtl8712/osdep_service.h
index 1ee943a58c4c..9ba603310fdc 100644
--- a/drivers/staging/rtl8712/osdep_service.h
+++ b/drivers/staging/rtl8712/osdep_service.h
@@ -72,18 +72,6 @@ static inline struct list_head *get_list_head(struct  __queue *queue)
 #define LIST_CONTAINOR(ptr, type, member) \
 	((type *)((char *)(ptr)-(SIZE_T)(&((type *)0)->member)))
 
-static inline void _enter_hwio_critical(struct semaphore *prwlock,
-					unsigned long *pirqL)
-{
-	down(prwlock);
-}
-
-static inline void _exit_hwio_critical(struct semaphore *prwlock,
-				       unsigned long *pirqL)
-{
-	up(prwlock);
-}
-
 static inline void list_delete(struct list_head *plist)
 {
 	list_del_init(plist);
@@ -152,11 +140,6 @@ static inline u32 _down_sema(struct semaphore *sema)
 		return _SUCCESS;
 }
 
-static inline void _rtl_rwlock_init(struct semaphore *prwlock)
-{
-	sema_init(prwlock, 1);
-}
-
 static inline void _init_listhead(struct list_head *list)
 {
 	INIT_LIST_HEAD(list);