From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752799AbbHUF70 (ORCPT ); Fri, 21 Aug 2015 01:59:26 -0400 Received: from mail-pa0-f47.google.com ([209.85.220.47]:34534 "EHLO mail-pa0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751077AbbHUF7Y (ORCPT ); Fri, 21 Aug 2015 01:59:24 -0400 From: yalin wang To: adaplas@gmail.com, plagnioj@jcrosoft.com, tomi.valkeinen@ti.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: yalin wang Subject: [RFC V2] fbdev/riva:change to use generice function to implement reverse_order() Date: Fri, 21 Aug 2015 13:59:10 +0800 Message-Id: <1440136750-30990-1-git-send-email-yalin.wang2010@gmail.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This change to use swab32(bitrev32()) to implement reverse_order() function, have better performance on some platforms. Signed-off-by: yalin wang --- drivers/video/fbdev/riva/fbdev.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/video/fbdev/riva/fbdev.c b/drivers/video/fbdev/riva/fbdev.c index f1ad274..ccf0f82 100644 --- a/drivers/video/fbdev/riva/fbdev.c +++ b/drivers/video/fbdev/riva/fbdev.c @@ -40,6 +40,7 @@ #include #include #include +#include #include #ifdef CONFIG_PMAC_BACKLIGHT #include @@ -453,11 +454,7 @@ static inline unsigned char MISCin(struct riva_par *par) static inline void reverse_order(u32 *l) { - u8 *a = (u8 *)l; - a[0] = bitrev8(a[0]); - a[1] = bitrev8(a[1]); - a[2] = bitrev8(a[2]); - a[3] = bitrev8(a[3]); + *l = swab32(bitrev32(*l)); } /* ------------------------------------------------------------------------- * -- 1.9.1