[patch 6/7] Use is_power_of_2() in myri10ge/myri10ge.c
From: akpm@linux-foundation.org
Date: 2007-07-09 18:51:05
From: vignesh babu <redacted> Replace (n & (n-1)) with is_power_of_2() Signed-off-by: vignesh babu <redacted> Cc: Brice Goglin <redacted> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- drivers/net/myri10ge/myri10ge.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletion(-) diff -puN drivers/net/myri10ge/myri10ge.c~use-is_power_of_2-in-myri10ge-myri10gec drivers/net/myri10ge/myri10ge.c
--- a/drivers/net/myri10ge/myri10ge.c~use-is_power_of_2-in-myri10ge-myri10gec
+++ a/drivers/net/myri10ge/myri10ge.c@@ -60,6 +60,7 @@ #include <linux/crc32.h> #include <linux/moduleparam.h> #include <linux/io.h> +#include <linux/log2.h> #include <net/checksum.h> #include <asm/byteorder.h> #include <asm/io.h>
@@ -1804,7 +1805,7 @@ static int myri10ge_open(struct net_devi */ big_pow2 = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD; if (big_pow2 < MYRI10GE_ALLOC_SIZE / 2) { - while ((big_pow2 & (big_pow2 - 1)) != 0) + while (!is_power_of_2(big_pow2)) big_pow2++; mgp->big_bytes = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD; } else {
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