path: root/net
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authorJohannes Berg <johannes.berg@intel.com>2010-08-12 14:49:58 +0200
committerJohn W. Linville <linville@tuxdriver.com>2010-08-24 16:27:54 -0400
commit633adf1ad1c92c02bd3f10bbd73737a969179378 (patch)
tree3f23d54719a1742d9326d61b6820147185cdb60c /net
parentb68b3c4d92ff2440414137763477648e6db6c96f (diff)
cfg80211: mark ieee80211_hdrlen const
This function analyses only its single, value-passed argument, and has no side effects. Thus it can be const, which makes mac80211 smaller, for example: text data bss dec hex filename 362518 16720 884 380122 5ccda mac80211.ko (before) 362358 16720 884 379962 5cc3a mac80211.ko (after) a 160 byte saving in text size, and an optimisation because the function won't be called as often. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
1 files changed, 1 insertions, 1 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 0c8a1e8b7690..1eb24162be61 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -221,7 +221,7 @@ const unsigned char bridge_tunnel_header[] __aligned(2) =
{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
-unsigned int ieee80211_hdrlen(__le16 fc)
+unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc)
unsigned int hdrlen = 24;

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