else
                pCap->num_gpio_pins = AR_NUM_GPIO;
 
-       if (AR_SREV_9160_10_OR_LATER(ah) || AR_SREV_9100(ah)) {
-               pCap->hw_caps |= ATH9K_HW_CAP_CST;
+       if (AR_SREV_9160_10_OR_LATER(ah) || AR_SREV_9100(ah))
                pCap->rts_aggr_limit = ATH_AMPDU_LIMIT_MAX;
-       } else {
+       else
                pCap->rts_aggr_limit = (8 * 1024);
-       }
 
 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
        ah->rfsilent = ah->eep_ops->get_eeprom(ah, EEP_RF_SILENT);
 
 enum ath9k_hw_caps {
        ATH9K_HW_CAP_HT                         = BIT(0),
        ATH9K_HW_CAP_RFSILENT                   = BIT(1),
-       ATH9K_HW_CAP_CST                        = BIT(2),
-       ATH9K_HW_CAP_AUTOSLEEP                  = BIT(4),
-       ATH9K_HW_CAP_4KB_SPLITTRANS             = BIT(5),
-       ATH9K_HW_CAP_EDMA                       = BIT(6),
-       ATH9K_HW_CAP_RAC_SUPPORTED              = BIT(7),
-       ATH9K_HW_CAP_LDPC                       = BIT(8),
-       ATH9K_HW_CAP_FASTCLOCK                  = BIT(9),
-       ATH9K_HW_CAP_SGI_20                     = BIT(10),
-       ATH9K_HW_CAP_PAPRD                      = BIT(11),
-       ATH9K_HW_CAP_ANT_DIV_COMB               = BIT(12),
-       ATH9K_HW_CAP_2GHZ                       = BIT(13),
-       ATH9K_HW_CAP_5GHZ                       = BIT(14),
-       ATH9K_HW_CAP_APM                        = BIT(15),
-       ATH9K_HW_CAP_RTT                        = BIT(16),
-       ATH9K_HW_CAP_MCI                        = BIT(17),
-       ATH9K_HW_CAP_DFS                        = BIT(18),
+       ATH9K_HW_CAP_AUTOSLEEP                  = BIT(2),
+       ATH9K_HW_CAP_4KB_SPLITTRANS             = BIT(3),
+       ATH9K_HW_CAP_EDMA                       = BIT(4),
+       ATH9K_HW_CAP_RAC_SUPPORTED              = BIT(5),
+       ATH9K_HW_CAP_LDPC                       = BIT(6),
+       ATH9K_HW_CAP_FASTCLOCK                  = BIT(7),
+       ATH9K_HW_CAP_SGI_20                     = BIT(8),
+       ATH9K_HW_CAP_PAPRD                      = BIT(9),
+       ATH9K_HW_CAP_ANT_DIV_COMB               = BIT(10),
+       ATH9K_HW_CAP_2GHZ                       = BIT(11),
+       ATH9K_HW_CAP_5GHZ                       = BIT(12),
+       ATH9K_HW_CAP_APM                        = BIT(13),
+       ATH9K_HW_CAP_RTT                        = BIT(14),
+       ATH9K_HW_CAP_MCI                        = BIT(15),
+       ATH9K_HW_CAP_DFS                        = BIT(16),
 };
 
 struct ath9k_hw_capabilities {