rt2x00: Enable fallback rates for rt61pci and rt73usb

Explicitly enable the usage of fallback rates for
the transmission of frames with rt61pci and rt73usb hardware.

Note that for txdone reporting, only rt61pci is capable of
reporting the fallback rates, for USB it is not possible
to determine the number of retries. However the device will
use the fallback rates, so it might still help in the performance.

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>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index 113ad690f9d..d06d90f003e 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -816,6 +816,9 @@ static void rt73usb_config_retry_limit(struct rt2x00_dev *rt2x00dev,
         u32 reg;
 
         rt2x00usb_register_read(rt2x00dev, TXRX_CSR4, &reg);
+        rt2x00_set_field32(&reg, TXRX_CSR4_OFDM_TX_RATE_DOWN, 1);
+        rt2x00_set_field32(&reg, TXRX_CSR4_OFDM_TX_RATE_STEP, 0);
+        rt2x00_set_field32(&reg, TXRX_CSR4_OFDM_TX_FALLBACK_CCK, 0);
         rt2x00_set_field32(&reg, TXRX_CSR4_LONG_RETRY_LIMIT,
                            libconf->conf->long_frame_max_tx_count);
         rt2x00_set_field32(&reg, TXRX_CSR4_SHORT_RETRY_LIMIT,