ath9k_hw: remove ATH9K_CAP_TKIP_SPLIT

This is only used as a workaround for an issue in one specific hw revision.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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

@@ -570,15 +570,6 @@ static void ath9k_init_crypto(struct ath9k_htc_priv *priv)
 	for (i = 0; i < common->keymax; i++)
 		ath9k_hw_keyreset(priv->ah, (u16) i);
 
-	/*
-	 * Check whether the separate key cache entries
-	 * are required to handle both tx+rx MIC keys.
-	 * With split mic keys the number of stations is limited
-	 * to 27 otherwise 59.
-	 */
-	if (ath9k_hw_getcapability(priv->ah, ATH9K_CAP_TKIP_SPLIT, 0, NULL))
-		common->splitmic = 1;
-
 	/* turn on mcast key search if possible */
 	if (!ath9k_hw_getcapability(priv->ah, ATH9K_CAP_MCAST_KEYSRCH, 0, NULL))
 		(void)ath9k_hw_setcapability(priv->ah, ATH9K_CAP_MCAST_KEYSRCH,

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

@@ -2259,9 +2259,6 @@ bool ath9k_hw_getcapability(struct ath_hw *ah, enum ath9k_capability_type type,
 			    u32 capability, u32 *result)
 {
 	switch (type) {
-	case ATH9K_CAP_TKIP_SPLIT:
-		return (ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA) ?
-			false : true;
 	case ATH9K_CAP_MCAST_KEYSRCH:
 		switch (capability) {
 		case 0:

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

@@ -207,7 +207,6 @@ enum ath9k_hw_caps {
 };
 
 enum ath9k_capability_type {
-	ATH9K_CAP_TKIP_SPLIT,
 	ATH9K_CAP_MCAST_KEYSRCH,
 	ATH9K_CAP_DS
 };

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

@@ -385,7 +385,7 @@ static void ath9k_init_crypto(struct ath_softc *sc)
 	 * With split mic keys the number of stations is limited
 	 * to 27 otherwise 59.
 	 */
-	if (ath9k_hw_getcapability(sc->sc_ah, ATH9K_CAP_TKIP_SPLIT, 0, NULL))
+	if (!(sc->sc_ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA))
 		common->splitmic = 1;
 
 	/* turn on mcast key search if possible */