staging: r8188eu: use round_up() instead of _RND4()

Use in-kernel round_up() instead of custom _RND4().
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220407125742.7814-3-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_cmd.c

@@ -264,7 +264,7 @@ int rtw_cmd_thread(void *context)
 			goto post_process;
 		}
 
-		pcmd->cmdsz = _RND4((pcmd->cmdsz));/* _RND4 */
+		pcmd->cmdsz = round_up(pcmd->cmdsz, 4);
 
 		memcpy(pcmdbuf, pcmd->parmbuf, pcmd->cmdsz);
 

drivers/staging/r8188eu/include/osdep_service.h

@@ -96,14 +96,6 @@ static inline void flush_signals_thread(void)
 
 #define _RND(sz, r) ((((sz)+((r)-1))/(r))*(r))
 
-static inline u32 _RND4(u32 sz)
-{
-	u32	val;
-
-	val = ((sz >> 2) + ((sz & 3) ? 1: 0)) << 2;
-	return val;
-}
-
 static inline u32 _RND8(u32 sz)
 {
 	u32	val;