diff options
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00dev.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00dev.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c index 053fdd3bd72..b03e6e41dc1 100644 --- a/drivers/net/wireless/rt2x00/rt2x00dev.c +++ b/drivers/net/wireless/rt2x00/rt2x00dev.c @@ -813,6 +813,30 @@ static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE; /* + * Allocate tx status FIFO for driver use. + */ + if (test_bit(DRIVER_REQUIRE_TXSTATUS_FIFO, &rt2x00dev->flags) && + rt2x00dev->ops->lib->txstatus_tasklet) { + /* + * Allocate txstatus fifo and tasklet, we use a size of 512 + * for the kfifo which is big enough to store 512/4=128 tx + * status reports. In the worst case (tx status for all tx + * queues gets reported before we've got a chance to handle + * them) 24*4=384 tx status reports need to be cached. + */ + status = kfifo_alloc(&rt2x00dev->txstatus_fifo, 512, + GFP_KERNEL); + if (status) + return status; + + /* tasklet for processing the tx status reports. */ + tasklet_init(&rt2x00dev->txstatus_tasklet, + rt2x00dev->ops->lib->txstatus_tasklet, + (unsigned long)rt2x00dev); + + } + + /* * Register HW. */ status = ieee80211_register_hw(rt2x00dev->hw); @@ -1028,6 +1052,16 @@ void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) cancel_work_sync(&rt2x00dev->txdone_work); /* + * Free the tx status fifo. + */ + kfifo_free(&rt2x00dev->txstatus_fifo); + + /* + * Kill the tx status tasklet. + */ + tasklet_kill(&rt2x00dev->txstatus_tasklet); + + /* * Uninitialize device. */ rt2x00lib_uninitialize(rt2x00dev); |