ath9k: Reduce the frequency of PA offset calibration

PA calibration need not be done if the offset is not varying.
The current logic does PA calibration even if the offset is the
same.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index 24b30631d93e..b24150a1b4ad 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -424,6 +424,7 @@ struct ath_hw {
         enum ath9k_power_mode power_mode;
 
         struct ath9k_nfcal_hist nfCalHist[NUM_NF_READINGS];
+        struct ath9k_pacal_info pacal_info;
         struct ar5416Stats stats;
         struct ath9k_tx_queue_info txq[ATH9K_NUM_TX_QUEUES];