--- 73bbec58341ecd6362fe95caa3b5b1900454a20d
+++ 6604c2734a4e1365575146174b746cb790d46cca
@@ -684,6 +684,21 @@ static int rt2x00lib_probe_hw(struct rt2
 	rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues;
 
 	/*
+	 * Initialize extra TX headroom required.
+	 */
+	rt2x00dev->hw->extra_tx_headroom =
+		max_t(unsigned int, IEEE80211_TX_STATUS_HEADROOM,
+		      rt2x00dev->ops->extra_tx_headroom);
+
+	/*
+	 * Take TX headroom required for alignment into account.
+	 */
+	if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags))
+		rt2x00dev->hw->extra_tx_headroom += RT2X00_L2PAD_SIZE;
+	else if (test_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags))
+		rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE;
+
+	/*
 	 * Register HW.
 	 */
 	status = ieee80211_register_hw(rt2x00dev->hw);