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rt2x00: rt2800usb: use rt2x00dev->rx->limit 

The RX data queue is initialized already when
the rt2800_usb_enable_radio() function is called.

Fetch the number of the queue entries from that
instead of using the entry_num field of the data
queue descriptor.

The two values are the same, and the use of the
rt2x00dev->rx->limit value allows us to get rid
of a superfluous pointer dereference.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Gabor Juhos 2013-05-01 17:17:32 +02:00 committed by John W. Linville
parent 1cfcbe4cd4
commit 3a28c8ac15
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/rt2x00/rt2800usb.c
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@ -327,7 +327,7 @@ static int rt2800usb_enable_radio(struct rt2x00_dev *rt2x00dev)
* this limit so reduce the number to prevent errors.
*/
rt2x00_set_field32(&reg, USB_DMA_CFG_RX_BULK_AGG_LIMIT,
((rt2x00dev->ops->rx->entry_num * DATA_FRAME_SIZE)
((rt2x00dev->rx->limit * DATA_FRAME_SIZE)
/ 1024) - 3);
rt2x00_set_field32(&reg, USB_DMA_CFG_RX_BULK_EN, 1);
rt2x00_set_field32(&reg, USB_DMA_CFG_TX_BULK_EN, 1);