mac80211: fix debugfs_sta print_mac() warning

When print_mac() was marked as __pure to avoid emitting a function
call in pr_debug() scenarios, a warning in this code surfaced since
it relies on the fact that the buffer is modified and doesn't use
the return value. This patch makes it use the return value instead.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Reported-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 47db0d4aa433623c27ef904f55080576ef2ed92f..1a4d2c3775afcb76f453cc268e371dfb895b1737 100644 (file)
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -297,12 +297,13 @@ STA_OPS_WR(agg_status);
 void ieee80211_sta_debugfs_add(struct sta_info *sta)
 {
        struct dentry *stations_dir = sta->local->debugfs.stations;
-       DECLARE_MAC_BUF(mac);
+       DECLARE_MAC_BUF(mbuf);
+       u8 *mac;
 
        if (!stations_dir)
                return;
 
-       print_mac(mac, sta->addr);
+       mac = print_mac(mbuf, sta->addr);
 
        sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
        if (!sta->debugfs.dir)