iwlwifi: follow main beacon interval

It is necessary that the PAN context always
use the same beacon interval as the BSS
context unless it is in dual-station mode,
ie. the PAN context is a station as well,
so implement that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

drivers/net/wireless/iwlwifi/iwl-core.c

@@ -525,9 +525,16 @@ int iwl_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 	 */
 	ctx->timing.atim_window = 0;
 
-	beacon_int = iwl_adjust_beacon_interval(beacon_int,
+	if (ctx->ctxid == IWL_RXON_CTX_PAN &&
+	    (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION)) {
+		ctx->timing.beacon_interval =
+			priv->contexts[IWL_RXON_CTX_BSS].timing.beacon_interval;
+		beacon_int = le16_to_cpu(ctx->timing.beacon_interval);
+	} else {
+		beacon_int = iwl_adjust_beacon_interval(beacon_int,
 				priv->hw_params.max_beacon_itrvl * TIME_UNIT);
-	ctx->timing.beacon_interval = cpu_to_le16(beacon_int);
+		ctx->timing.beacon_interval = cpu_to_le16(beacon_int);
+	}
 
 	tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 	interval_tm = beacon_int * TIME_UNIT;