--- /dev/null
+--- a/drivers/net/wireless/ath/ath9k/mac.c
++++ b/drivers/net/wireless/ath/ath9k/mac.c
+@@ -713,6 +713,8 @@ int ath9k_hw_rxprocdesc(struct ath_hw *a
+ rs->rs_status |= ATH9K_RXERR_DECRYPT;
+ else if (ads.ds_rxstatus8 & AR_MichaelErr)
+ rs->rs_status |= ATH9K_RXERR_MIC;
++ else if (ads.ds_rxstatus8 & AR_KeyMiss)
++ rs->rs_status |= ATH9K_RXERR_DECRYPT;
+ }
+
+ return 0;
+--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+@@ -616,7 +616,8 @@ int ath9k_hw_process_rxdesc_edma(struct
+ rxs->rs_status |= ATH9K_RXERR_DECRYPT;
+ } else if (rxsp->status11 & AR_MichaelErr) {
+ rxs->rs_status |= ATH9K_RXERR_MIC;
+- }
++ } else if (rxsp->status11 & AR_KeyMiss)
++ rxs->rs_status |= ATH9K_RXERR_DECRYPT;
+ }
+
+ return 0;