diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 9321931a4c2fc098b6727e3800a6eda60da372f2..62597f4ca319f552ee15dbbe0fbf260f2695a90d 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -2257,21 +2257,6 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
 	return 0;
 }
 
-bool ath9k_hw_getcapability(struct ath_hw *ah, enum ath9k_capability_type type,
-			    u32 capability, u32 *result)
-{
-	switch (type) {
-	case ATH9K_CAP_DS:
-		return (AR_SREV_9280_20_OR_LATER(ah) &&
-			(ah->eep_ops->get_eeprom(ah, EEP_RC_CHAIN_MASK) == 1))
-			? false : true;
-	default:
-		return false;
-	}
-}
-EXPORT_SYMBOL(ath9k_hw_getcapability);
-
-
 /****************************/
 /* GPIO / RFKILL / Antennae */
 /****************************/
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index 16b35cdce593edc6139ea99ef80d6a6fc3298f12..5ecbfcf7470af6f8082d0bcc065719bed4f71fc7 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -206,10 +206,6 @@ enum ath9k_hw_caps {
 	ATH9K_HW_CAP_PAPRD			= BIT(22),
 };
 
-enum ath9k_capability_type {
-	ATH9K_CAP_DS
-};
-
 struct ath9k_hw_capabilities {
 	u32 hw_caps; /* ATH9K_HW_CAP_* from ath9k_hw_caps */
 	DECLARE_BITMAP(wireless_modes, ATH9K_MODE_MAX); /* ATH9K_MODE_* */
@@ -852,8 +848,6 @@ int ath9k_hw_init(struct ath_hw *ah);
 int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
 		   bool bChannelChange);
 int ath9k_hw_fill_cap_info(struct ath_hw *ah);
-bool ath9k_hw_getcapability(struct ath_hw *ah, enum ath9k_capability_type type,
-			    u32 capability, u32 *result);
 u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan);
 
 /* Key Cache Management */