mac80211/rt2x00: add ieee80211_tx_status_ni()

All rt2x00 drivers except rt2800pci call ieee80211_tx_status() from
a workqueue, which causes "NOHZ: local_softirq_pending 08" messages.

To fix it, add ieee80211_tx_status_ni() similar to ieee80211_rx_ni()
which can be called from process context, and call it from
rt2x00lib_txdone().  For the rt2800pci special case a driver
flag is introduced.

Signed-off-by: Johannes Stezenbach <js@sig21.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index c879f9a7037c..bd3afc92f434 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -379,9 +379,12 @@ void rt2x00lib_txdone(struct queue_entry *entry,
          * through a mac80211 library call (RTS/CTS) then we should not
          * send the status report back.
          */
-        if (!(skbdesc_flags & SKBDESC_NOT_MAC80211))
-                ieee80211_tx_status(rt2x00dev->hw, entry->skb);
-        else
+        if (!(skbdesc_flags & SKBDESC_NOT_MAC80211)) {
+                if (test_bit(DRIVER_REQUIRE_TASKLET_CONTEXT, &rt2x00dev->flags))
+                        ieee80211_tx_status(rt2x00dev->hw, entry->skb);
+                else
+                        ieee80211_tx_status_ni(rt2x00dev->hw, entry->skb);
+        } else
                 dev_kfree_skb_any(entry->skb);
 
         /*