[PATCHv2 5/6] net: fec: simplify loop counter handling in swap_buffer()
From: Lothar Waßmann <hidden>
Date: 2014-10-28 11:20:20
Also in:
linux-arm-kernel, lkml
Subsystem:
freescale imx / mxc fec driver, networking drivers, the rest · Maintainers:
Wei Fang, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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 <redacted> --- 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
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