ath9k: Set default noise floor value for AR9287

The default noise floor was never initialized for
AR9287.This patch helps in reporting the correct
RSSI for this version of chipset.
Signed-off-by: NVivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/calib.c

@@ -697,6 +697,8 @@ void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah)
 		noise_floor = AR_PHY_CCA_MAX_AR9280_GOOD_VALUE;
 	else if (AR_SREV_9285(ah))
 		noise_floor = AR_PHY_CCA_MAX_AR9285_GOOD_VALUE;
+	else if (AR_SREV_9287(ah))
+		noise_floor = AR_PHY_CCA_MAX_AR9287_GOOD_VALUE;
 	else
 		noise_floor = AR_PHY_CCA_MAX_AR5416_GOOD_VALUE;
 

drivers/net/wireless/ath/ath9k/calib.h

@@ -28,6 +28,7 @@ extern const struct ath9k_percal_data adc_init_dc_cal;
 #define AR_PHY_CCA_MAX_AR5416_GOOD_VALUE	-85
 #define AR_PHY_CCA_MAX_AR9280_GOOD_VALUE	-112
 #define AR_PHY_CCA_MAX_AR9285_GOOD_VALUE	-118
+#define AR_PHY_CCA_MAX_AR9287_GOOD_VALUE	-118
 #define AR_PHY_CCA_MAX_HIGH_VALUE      		-62
 #define AR_PHY_CCA_MIN_BAD_VALUE       		-140
 #define AR_PHY_CCA_FILTERWINDOW_LENGTH_INIT     3