iwl3945: add debugfs to 3945

Patch adds debugfs to 3945. Also fix debugfs registration in iwlagn
to return error code if it fails.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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

@@ -2829,7 +2829,7 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	err = iwl_dbgfs_register(priv, DRV_NAME);
 	if (err)
-		IWL_ERR(priv, "failed to create debugfs files\n");
+		IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
 
 	/* If platform's RF_KILL switch is NOT set to KILL */
 	if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)

drivers/net/wireless/iwlwifi/iwl3945-base.c

@@ -4346,6 +4346,10 @@ static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
 	if (err)
 		goto  out_remove_sysfs;
 
+	err = iwl_dbgfs_register(priv, DRV_NAME);
+	if (err)
+		IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
+
 	err = iwl_rfkill_init(priv);
 	if (err)
 		IWL_ERR(priv, "Unable to initialize RFKILL system. "
@@ -4396,6 +4400,8 @@ static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
 
 	IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
 
+	iwl_dbgfs_unregister(priv);
+
 	set_bit(STATUS_EXIT_PENDING, &priv->status);
 
 	if (priv->mac80211_registered) {