From: Johannes Stezenbach Date: Mon, 18 Apr 2011 13:29:12 +0000 (+0200) Subject: rt2800usb: read TX_STA_FIFO asynchronously X-Git-Tag: v3.0-rc1~377^2~256^2^2~16 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0e0d39e5f3a3e59c8513b59d4feeeadcb93b707d;p=pandora-kernel.git 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 Signed-off-by: Ivo van Doorn Signed-off-by: John W. Linville --- Reading git-diff-tree failed