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--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1854,6 +1854,10 @@ int ath9k_hw_fill_cap_info(struct ath_hw
ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA;
+ /* enable key search for every frame in an aggregate */
+ if (AR_SREV_9300_20_OR_LATER(ah))
+ ah->misc_mode |= AR_PCU_ALWAYS_PERFORM_KEYSEARCH;
+
pCap->low_2ghz_chan = 2312;
pCap->high_2ghz_chan = 2732;
--- a/drivers/net/wireless/ath/ath9k/reg.h
+++ b/drivers/net/wireless/ath/ath9k/reg.h
@@ -1575,6 +1575,7 @@ enum {
#define AR_PCU_TBTT_PROTECT 0x00200000
#define AR_PCU_CLEAR_VMF 0x01000000
#define AR_PCU_CLEAR_BA_VALID 0x04000000
+#define AR_PCU_ALWAYS_PERFORM_KEYSEARCH 0x10000000
#define AR_PCU_BT_ANT_PREVENT_RX 0x00100000
#define AR_PCU_BT_ANT_PREVENT_RX_S 20
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