diff -ur madwifi.old/ath/if_ath.c madwifi.dev/ath/if_ath.c
--- madwifi.old/ath/if_ath.c	2007-06-01 16:44:25.170898128 +0200
+++ madwifi.dev/ath/if_ath.c	2007-06-01 20:01:24.205131816 +0200
@@ -271,7 +271,7 @@
 static char *ratectl = DEF_RATE_CTL;
 static int rfkill = 0;
 #ifdef ATH_CAP_TPC
-static int tpc = -1;
+static int tpc = 0;
 #endif
 static int countrycode = -1;
 static int outdoor = -1;