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authorJohannes Stezenbach <js@sig21.net>2011-04-18 15:29:12 +0200
committerJohn W. Linville <linville@tuxdriver.com>2011-04-19 21:39:27 +0200
commit0e0d39e5f3a3e59c8513b59d4feeeadcb93b707d (patch)
tree72b63cb8c5a994cc7e6253b241aeddd131d618f0 /drivers/net/wireless/rt2x00/rt2x00.h
parentrt2x00: Use TXOP_HTTXOP for beacons (diff)
downloadlinux-0e0d39e5f3a3e59c8513b59d4feeeadcb93b707d.tar.xz
linux-0e0d39e5f3a3e59c8513b59d4feeeadcb93b707d.zip
rt2800usb: read TX_STA_FIFO asynchronously
Trying to fix the "TX status report missed" warnings by reading the TX_STA_FIFO entries as quickly as possible. The TX_STA_FIFO is too small in hardware, thus reading it only from the workqueue is too slow and entries get lost. Start an asynchronous read of the TX_STA_FIFO directly from the TX URB completion callback (atomic context, thus it cannot use the blocking rt2800_register_read()). If the async read returns a valid FIFO entry, it is pushed into a larger FIFO inside struct rt2x00_dev, until rt2800_txdone() picks it up. A .tx_dma_done callback is added to struct rt2x00lib_ops to trigger the async read from the URB completion callback. Signed-off-by: Johannes Stezenbach <js@sig21.net> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00.h')
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index 79c385accfac..e3b9b5146bf5 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -571,6 +571,7 @@ struct rt2x00lib_ops {
void (*kick_queue) (struct data_queue *queue);
void (*stop_queue) (struct data_queue *queue);
void (*flush_queue) (struct data_queue *queue);
+ void (*tx_dma_done) (struct queue_entry *entry);
/*
* TX control handlers