iwlwifi: move rate registration to module load

Having rate registration during module load enables the use of
error checking as well as reliable registration/unregistration
pairing. Previously this was not possible as rate registration
was done during _probe where _probe could be run for more than
one device on the system.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-rs.c b/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
index 157e572..8559f25 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
@@ -976,12 +976,12 @@
 		       iwl3945_rates[rs_sta->start_rate].plcp);
 }
 
-void iwl3945_rate_control_register(struct ieee80211_hw *hw)
+int iwl3945_rate_control_register(void)
 {
-	ieee80211_rate_control_register(&rs_ops);
+	return ieee80211_rate_control_register(&rs_ops);
 }
 
-void iwl3945_rate_control_unregister(struct ieee80211_hw *hw)
+void iwl3945_rate_control_unregister(void)
 {
 	ieee80211_rate_control_unregister(&rs_ops);
 }