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Message-Id: <1414494104-27943-6-git-send-email-LW@KARO-electronics.de> Date: Tue, 28 Oct 2014 12:01:43 +0100 From: Lothar Waßmann <LW@...O-electronics.de> To: netdev@...r.kernel.org Cc: "David S. Miller" <davem@...emloft.net>, Russell King <rmk+kernel@....linux.org.uk>, Frank Li <Frank.Li@...escale.com>, Fabio Estevam <fabio.estevam@...escale.com>, linux-kernel@...r.kernel.org, Lothar Waßmann <LW@...O-electronics.de>, <linux-arm-kernel@...ts.infradead.org> Subject: [PATCHv2 5/6] net: fec: simplify loop counter handling in swap_buffer() 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@...O-electronics.de> --- drivers/net/ethernet/freescale/fec_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index 3a103e9..404fb9d 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -333,7 +333,7 @@ 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; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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