rt2x00: Move USB tx/rx done handling to workqueue

Move all TX and RX completion handling into a work structure,
which is handeled on the mac80211 workqueue. This simplifies
the code in rt2x00lib since it no longer needs to check if the
device is USB or PCI to decide which mac80211 function should be used.

In the watchdog some changes are needed since it can no longer rely
on the TX completion function to be run while looping through the
entries. (Both functions now work on the same workqueue, so this
would deadlock). So the watchdog now waits for the URB to return,
and handle the TX status report directly.

As a side-effect, the debugfs entry for the RX queue now correctly
displays the positions of the INDEX and INDEX_DONE counters. This
also implies that it is not possible to perform checks like queue_empty()
and queue_full() on the RX queue.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.h b/drivers/net/wireless/rt2x00/rt2x00queue.h
index 191e7775a9c0..38b47919c868 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.h
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.h
@@ -1,5 +1,5 @@
 /*
-        Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
+        Copyright (C) 2004 - 2010 Ivo van Doorn <IvDoorn@gmail.com>
         <http://rt2x00.serialmonkey.com>
 
         This program is free software; you can redistribute it and/or modify
@@ -363,12 +363,16 @@ struct txentry_desc {
  *      the device has signaled it is done with it.
  * @ENTRY_DATA_PENDING: This entry contains a valid frame and is waiting
  *      for the signal to start sending.
+ * @ENTRY_DATA_IO_FAILED: Hardware indicated that an IO error occured
+ *      while transfering the data to the hardware. No TX status report will
+ *      be expected from the hardware.
  */
 enum queue_entry_flags {
         ENTRY_BCN_ASSIGNED,
         ENTRY_OWNER_DEVICE_DATA,
         ENTRY_OWNER_DEVICE_CRYPTO,
         ENTRY_DATA_PENDING,
+        ENTRY_DATA_IO_FAILED
 };
 
 /**