From: Arend van Spriel <arend@xxxxxxxxxxxx>
This function is similar to ffs() wihch is provided by the linux
kernel already. This patch replaces brcmf_find_msb() with ffs().
Reported-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@xxxxxxxxxxxx>
Reviewed-by: Roland Vossen <rvossen@xxxxxxxxxxxx>
Signed-off-by: Roland Vossen <rvossen@xxxxxxxxxxxx>
---
drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c | 39 ++-------------------
1 files changed, 4 insertions(+), 35 deletions(-)
diff --git a/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c
index 8b052b0..4f7b081 100644
--- a/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c
+++ b/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c
@@ -20,6 +20,7 @@
#include <linux/kthread.h>
#include <linux/netdevice.h>
#include <linux/sched.h>
+#include <linux/bitops.h>
#include <linux/etherdevice.h>
#include <linux/ieee80211.h>
#include <linux/mmc/sdio_func.h>
@@ -294,11 +295,6 @@ static s32 brcmf_iscan_inprogress(struct brcmf_cfg80211_priv *cfg_priv);
static s32 brcmf_iscan_aborted(struct brcmf_cfg80211_priv *cfg_priv);
/*
-* find most significant bit set
-*/
-static __used u32 brcmf_find_msb(u16 bit16);
-
-/*
* update pmklist to dongle
*/
static __used s32 brcmf_update_pmklist(struct net_device *dev,
@@ -2008,33 +2004,6 @@ done:
return err;
}
-static __used u32 brcmf_find_msb(u16 bit16)
-{
- u32 ret = 0;
-
- if (bit16 & 0xff00) {
- ret += 8;
- bit16 >>= 8;
- }
-
- if (bit16 & 0xf0) {
- ret += 4;
- bit16 >>= 4;
- }
-
- if (bit16 & 0xc) {
- ret += 2;
- bit16 >>= 2;
- }
-
- if (bit16 & 2)
- ret += bit16 & 2;
- else if (bit16)
- ret += bit16;
-
- return ret;
-}
-
static s32
brcmf_cfg80211_set_bitrate_mask(struct wiphy *wiphy, struct net_device *dev,
const u8 *addr,
@@ -2062,10 +2031,10 @@ brcmf_cfg80211_set_bitrate_mask(struct wiphy *wiphy, struct net_device *dev,
rateset.count = le32_to_cpu(rateset.count);
- legacy = brcmf_find_msb(mask->control[IEEE80211_BAND_2GHZ].legacy);
+ legacy = ffs(mask->control[IEEE80211_BAND_2GHZ].legacy & 0xFFFF);
if (!legacy)
- legacy = brcmf_find_msb(
- mask->control[IEEE80211_BAND_5GHZ].legacy);
+ legacy = ffs(mask->control[IEEE80211_BAND_5GHZ].legacy &
+ 0xFFFF);
val = wl_g_rates[legacy - 1].bitrate * 100000;
--
1.7.4.1
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