ath9k: Move rate control alg register/unregister to appropriate place

This patch makes sure the rate control alg is registered/unregistered
only once for this module.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index 550afbe..11064ca 100644 (file)
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -1229,9 +1229,6 @@ static void ath_detach(struct ath_softc *sc)
        ath_deinit_leds(sc);
 
        ieee80211_unregister_hw(hw);
-
-       ath_rate_control_unregister();
-
        ath_rx_cleanup(sc);
        ath_tx_cleanup(sc);
 
@@ -1512,15 +1509,7 @@ static int ath_attach(u16 devid, struct ath_softc *sc)
        hw->sta_data_size = sizeof(struct ath_node);
        hw->vif_data_size = sizeof(struct ath_vap);
 
-       /* Register rate control */
        hw->rate_control_algorithm = "ath9k_rate_control";
-       error = ath_rate_control_register();
-       if (error != 0) {
-               DPRINTF(sc, ATH_DBG_FATAL,
-                       "Unable to register rate control algorithm: %d\n", error);
-               ath_rate_control_unregister();
-               goto bad;
-       }
 
        if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) {
                setup_ht_cap(&sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
@@ -1553,10 +1542,6 @@ static int ath_attach(u16 devid, struct ath_softc *sc)
 #endif
 
        error = ieee80211_register_hw(hw);
-       if (error != 0) {
-               ath_rate_control_unregister();
-               goto bad;
-       }
 
        /* Initialize LED control */
        ath_init_leds(sc);
@@ -1564,7 +1549,6 @@ static int ath_attach(u16 devid, struct ath_softc *sc)
        return 0;
 detach:
        ath_detach(sc);
-bad:
        return error;
 }
 
@@ -2714,11 +2698,24 @@ static struct pci_driver ath_pci_driver = {
 
 static int __init init_ath_pci(void)
 {
+       int error;
+
        printk(KERN_INFO "%s: %s\n", dev_info, ATH_PCI_VERSION);
 
+       /* Register rate control algorithm */
+       error = ath_rate_control_register();
+       if (error != 0) {
+               printk(KERN_ERR
+                       "Unable to register rate control algorithm: %d\n",
+                       error);
+               ath_rate_control_unregister();
+               return error;
+       }
+
        if (pci_register_driver(&ath_pci_driver) < 0) {
                printk(KERN_ERR
                        "ath_pci: No devices found, driver not installed.\n");
+               ath_rate_control_unregister();
                pci_unregister_driver(&ath_pci_driver);
                return -ENODEV;
        }
@@ -2729,6 +2726,7 @@ module_init(init_ath_pci);
 
 static void __exit exit_ath_pci(void)
 {
+       ath_rate_control_unregister();
        pci_unregister_driver(&ath_pci_driver);
        printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
 }