ath5k: clarify srev comparison for CCMP check

As Pavel Roskin noted, the check for mac version as copied from
legacy_hal made no sense.  This replaces it with the equivalent
and makes up a suitable #define for the mac version legacy_hal
checked.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 3 insertions, 5 deletions

diff --git a/drivers/net/wireless/ath/ath5k/ath5k.h b/drivers/net/wireless/ath/ath5k/ath5k.h
index cdc79cd134c2..1275ba0990b3 100644
--- a/drivers/net/wireless/ath/ath5k/ath5k.h
+++ b/drivers/net/wireless/ath/ath5k/ath5k.h
@@ -306,6 +306,7 @@ struct ath5k_srev_name {
 #define AR5K_SREV_AR5311B       0x30 /* Spirit */
 #define AR5K_SREV_AR5211        0x40 /* Oahu */
 #define AR5K_SREV_AR5212        0x50 /* Venice */
+#define AR5K_SREV_AR5212_V4     0x54 /* ??? */
 #define AR5K_SREV_AR5213        0x55 /* ??? */
 #define AR5K_SREV_AR5213A       0x59 /* Hainan */
 #define AR5K_SREV_AR2413        0x78 /* Griffin lite */
diff --git a/drivers/net/wireless/ath/ath5k/attach.c b/drivers/net/wireless/ath/ath5k/attach.c
index 109ab7ba3041..4819f39da704 100644
--- a/drivers/net/wireless/ath/ath5k/attach.c
+++ b/drivers/net/wireless/ath/ath5k/attach.c
@@ -318,12 +318,9 @@ struct ath5k_hw *ath5k_hw_attach(struct ath5k_softc *sc, u8 mac_version)
 
         /* Crypto settings */
         ee = &ah->ah_capabilities.cap_eeprom;
-        ah->ah_aes_support =
+        ah->ah_aes_support = srev >= AR5K_SREV_AR5212_V4 &&
                 (ee->ee_version >= AR5K_EEPROM_VERSION_5_0 &&
-                 !AR5K_EEPROM_AES_DIS(ee->ee_misc5) &&
-                 (ah->ah_mac_version > (AR5K_SREV_AR5212 >> 4) ||
-                  (ah->ah_mac_version == (AR5K_SREV_AR5212 >> 4) &&
-                   ah->ah_mac_revision >= (AR5K_SREV_AR5211 >> 4))));
+                 !AR5K_EEPROM_AES_DIS(ee->ee_misc5));
 
         if (srev >= AR5K_SREV_AR2414) {
                 ah->ah_combined_mic = true;