From: Johannes Berg <johannes@sipsolutions.net>
Date: Wed, 13 Feb 2008 23:30:35 +0000 (+0100)
Subject: mac80211: fix ecw2cw brain-damage
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=ac2bf3242e1a329543be50b5c9df4f0119ee188c;p=deliverable%2Flinux.git

mac80211: fix ecw2cw brain-damage

This brain-damaged code just bothers me, fix it.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
index 11f2ee6b2269..a465e38c7252 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/ieee80211_sta.c
@@ -227,12 +227,7 @@ static void ieee802_11_parse_elems(u8 *start, size_t len,
 
 static int ecw2cw(int ecw)
 {
-	int cw = 1;
-	while (ecw > 0) {
-		cw <<= 1;
-		ecw--;
-	}
-	return cw - 1;
+	return (1 << ecw) - 1;
 }
 
 static void ieee80211_sta_wmm_params(struct net_device *dev,