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[PATCHv3,7/9] net: fec: simplify loop counter handling in swap_buffer()

Message ID 1414502584-10583-8-git-send-email-LW@KARO-electronics.de
State New
Headers show

Commit Message

Lothar Waßmann Oct. 28, 2014, 1:23 p.m. UTC 
Eliminate the DIV_ROUND_UP() and change the loop counter increment to
4 instead. This results in saving 6 instructions in the functions
assembly code.

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
---
 drivers/net/ethernet/freescale/fec_main.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 5b76cdc..ddfc57d 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -292,7 +292,7 @@  static void *swap_buffer(void *bufaddr, int len)
 	int i;
 	unsigned int *buf = bufaddr;
 
-	for (i = 0; i < DIV_ROUND_UP(len, 4); i++, buf++)
+	for (i = 0; i < len; i += 4, buf++)
 		swab32s(buf);
 
 	return bufaddr;