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| author | Ivo van Doorn <ivdoorn@gmail.com> | 2011-04-30 17:14:23 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-05-02 14:49:16 -0400 |
| commit | a073fdef46d50440ee573452a436023dcf4f9edf (patch) | |
| tree | ea24b8ae383103b74cb1864e66d0fef82ecee6cf /drivers/net/wireless/rt2x00/rt2800usb.c | |
| parent | 16763478892c271293d02872475a67a648ae12fc (diff) | |
| download | kernel_samsung_smdk4412-a073fdef46d50440ee573452a436023dcf4f9edf.zip kernel_samsung_smdk4412-a073fdef46d50440ee573452a436023dcf4f9edf.tar.gz kernel_samsung_smdk4412-a073fdef46d50440ee573452a436023dcf4f9edf.tar.bz2 | |
rt2x00: Optimize TX_STA_FIFO register reading
Add recycling functionality to rt2x00usb_register_read_async.
When the callback function returns true, resubmit the urb to
read the register again.
This optimizes the rt2800usb driver when multiple TX status reports
are pending in the register, because now we don't need to allocate
the rt2x00_async_read_data and urb structure each time.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2800usb.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800usb.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c index e4f82d2..b5d5f22 100644 --- a/drivers/net/wireless/rt2x00/rt2800usb.c +++ b/drivers/net/wireless/rt2x00/rt2800usb.c @@ -114,12 +114,12 @@ static bool rt2800usb_txstatus_pending(struct rt2x00_dev *rt2x00dev) return false; } -static void rt2800usb_tx_sta_fifo_read_completed(struct rt2x00_dev *rt2x00dev, +static bool rt2800usb_tx_sta_fifo_read_completed(struct rt2x00_dev *rt2x00dev, int urb_status, u32 tx_status) { if (urb_status) { WARNING(rt2x00dev, "rt2x00usb_register_read_async failed: %d\n", urb_status); - return; + return false; } /* try to read all TX_STA_FIFO entries before scheduling txdone_work */ @@ -129,13 +129,14 @@ static void rt2800usb_tx_sta_fifo_read_completed(struct rt2x00_dev *rt2x00dev, "drop tx status report.\n"); queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work); } else - rt2x00usb_register_read_async(rt2x00dev, TX_STA_FIFO, - rt2800usb_tx_sta_fifo_read_completed); + return true; } else if (!kfifo_is_empty(&rt2x00dev->txstatus_fifo)) { queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work); } else if (rt2800usb_txstatus_pending(rt2x00dev)) { mod_timer(&rt2x00dev->txstatus_timer, jiffies + msecs_to_jiffies(2)); } + + return false; } static void rt2800usb_tx_dma_done(struct queue_entry *entry) |