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Index: madwifi-0.9.4/ath_rate/minstrel/minstrel.c
===================================================================
--- madwifi-0.9.4.old/ath_rate/minstrel/minstrel.c 2007-12-12 05:11:07.000000000 +0100
+++ madwifi-0.9.4/ath_rate/minstrel/minstrel.c 2008-07-24 15:15:41.000000000 +0200
@@ -394,6 +394,9 @@
int rc1, rc2, rc3; /* Index into the rate table, so for example, it is 0..11 */
int rixc1, rixc2, rixc3; /* The actual bit rate used */
+ if (sn->num_rates <= 0)
+ return;
+
if (sn->is_sampling) {
sn->is_sampling = 0;
if (sn->rs_sample_rate_slower)