iwlwifi: reintroduce iwl_enable_rfkill_int

If device is disabled by rfkill switch, do not enable all interrupts,
but only CSR_INT_BIT_RF_KILL to receive rfkill state change. Unblocking
other interrupts might cause problems, since driver can not be prepared
for receive them.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c
index 787229b..2d6ea42 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c
@@ -1134,10 +1134,8 @@
 	if (test_bit(STATUS_INT_ENABLED, &trans->shrd->status))
 		iwl_enable_interrupts(trans);
 	/* Re-enable RF_KILL if it occurred */
-	else if (handled & CSR_INT_BIT_RF_KILL) {
-		IWL_DEBUG_ISR(trans, "Enabling rfkill interrupt\n");
-		iwl_write32(trans, CSR_INT_MASK, CSR_INT_BIT_RF_KILL);
-	}
+	else if (handled & CSR_INT_BIT_RF_KILL)
+		iwl_enable_rfkill_int(trans);
 }
 
 /******************************************************************************