ath9k: cleanup try count for MRR in rate control

This has no functional change and just cleans up the code
to be more legible and removes a useless variable for
Multi Rate Retry.

For regular frames we use 2 retries for MRR segments [0-2].
For the last MRR segment [3] we use 4.

MRR[0] = 2
MRR[1] = 2
MRR[2] = 2
MRR[3] = 4

Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 961b0ce6ef3e..19df7882d0d3 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1540,7 +1540,8 @@ void ath_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
         hw->max_rates = 4;
         hw->channel_change_time = 5000;
         hw->max_listen_interval = 10;
-        hw->max_rate_tries = ATH_11N_TXMAXTRY;
+        /* Hardware supports 10 but we use 4 */
+        hw->max_rate_tries = 4;
         hw->sta_data_size = sizeof(struct ath_node);
         hw->vif_data_size = sizeof(struct ath_vif);