1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/common.c b/drivers/net/wireless/ath/ath9k/common.c
index fa6bd2d189e5..dc705a224952 100644
--- a/drivers/net/wireless/ath/ath9k/common.c
+++ b/drivers/net/wireless/ath/ath9k/common.c
@@ -169,6 +169,32 @@ void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow,
 }
 EXPORT_SYMBOL(ath9k_cmn_update_txpow);
 
+void ath9k_cmn_init_crypto(struct ath_hw *ah)
+{
+        struct ath_common *common = ath9k_hw_common(ah);
+        int i = 0;
+
+        /* Get the hardware key cache size. */
+        common->keymax = AR_KEYTABLE_SIZE;
+
+        /*
+         * 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 (ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA)
+                common->crypt_caps |= ATH_CRYPT_CAP_MIC_COMBINED;
+
+        /*
+         * Reset the key cache since some parts do not
+         * reset the contents on initial power up.
+         */
+        for (i = 0; i < common->keymax; i++)
+                ath_hw_keyreset(common, (u16) i);
+}
+EXPORT_SYMBOL(ath9k_cmn_init_crypto);
+
 static int __init ath9k_cmn_init(void)
 {
         return 0;