don't overwrite device default for fast frames closes #2321

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9609 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/madwifi/files/lib/wifi/madwifi.sh b/package/madwifi/files/lib/wifi/madwifi.sh
index 41a25a4..83f35ab 100755 (executable)
--- a/package/madwifi/files/lib/wifi/madwifi.sh
+++ b/package/madwifi/files/lib/wifi/madwifi.sh
@@ -114,8 +114,10 @@ enable_atheros() {
                config_get_bool hidden "$vif" hidden 0
                iwpriv "$ifname" hide_ssid "$hidden"
 
-               config_get_bool ff "$vif" ff 0
-               iwpriv "$ifname" ff "$ff"
+               config_get ff "$vif" ff
+               if [ -n "$ff" ]; then
+                       iwpriv "$ifname" ff "$ff"
+               fi
 
                config_get wds "$vif" wds
                case "$wds" in