ath9k_hw: remove pCap->keycache_size

Similar to the number of tx queue, the number of keycache entries depends
on the chip and shouldn't be messed with based on EEPROM data.
Remove this field and stick to using AR_KEYTABLE_SIZE

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

@@ -564,13 +564,7 @@ static void ath9k_init_crypto(struct ath9k_htc_priv *priv)
 	int i = 0;
 
 	/* Get the hardware key cache size. */
-	common->keymax = priv->ah->caps.keycache_size;
+	common->keymax = AR_KEYTABLE_SIZE;
-	if (common->keymax > ATH_KEYMAX) {
-		ath_dbg(common, ATH_DBG_ANY,
-			"Warning, using only %u entries in %u key cache\n",
-			ATH_KEYMAX, common->keymax);
-		common->keymax = ATH_KEYMAX;
-	}
 
 	if (priv->ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA)
 		common->crypt_caps |= ATH_CRYPT_CAP_MIC_COMBINED;

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

@@ -1880,12 +1880,6 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
 	else
 		pCap->hw_caps &= ~ATH9K_HW_CAP_HT;
 
-	if (capField & AR_EEPROM_EEPCAP_KC_ENTRIES)
-		pCap->keycache_size =
-			1 << MS(capField, AR_EEPROM_EEPCAP_KC_ENTRIES);
-	else
-		pCap->keycache_size = AR_KEYTABLE_SIZE;
-
 	if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
 		pCap->tx_triglevel_max = MAX_TX_FIFO_THRESHOLD >> 1;
 	else

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

@@ -191,7 +191,6 @@ enum ath9k_hw_caps {
 
 struct ath9k_hw_capabilities {
 	u32 hw_caps; /* ATH9K_HW_CAP_* from ath9k_hw_caps */
-	u16 keycache_size;
 	u16 low_5ghz_chan, high_5ghz_chan;
 	u16 low_2ghz_chan, high_2ghz_chan;
 	u16 rts_aggr_limit;

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

@@ -407,13 +407,7 @@ void ath9k_init_crypto(struct ath_softc *sc)
 	int i = 0;
 
 	/* Get the hardware key cache size. */
-	common->keymax = sc->sc_ah->caps.keycache_size;
+	common->keymax = AR_KEYTABLE_SIZE;
-	if (common->keymax > ATH_KEYMAX) {
-		ath_dbg(common, ATH_DBG_ANY,
-			"Warning, using only %u entries in %u key cache\n",
-			ATH_KEYMAX, common->keymax);
-		common->keymax = ATH_KEYMAX;
-	}
 
 	/*
 	 * Reset the key cache since some parts do not