Merge branch 'master' into for-2.6.34

1 files changed, 11 insertions, 1 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index 06c43ca39bf..265e66dba55 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -686,7 +686,17 @@ static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev)
         /*
          * Initialize extra TX headroom required.
          */
-        rt2x00dev->hw->extra_tx_headroom = rt2x00dev->ops->extra_tx_headroom;
+        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.