--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -359,13 +359,8 @@ static void ath9k_hw_init_config(struct 
 
 	ah->config.rx_intr_mitigation = true;
 
-	if (AR_SREV_9300_20_OR_LATER(ah)) {
-		ah->config.rimt_last = 500;
-		ah->config.rimt_first = 2000;
-	} else {
-		ah->config.rimt_last = 250;
-		ah->config.rimt_first = 700;
-	}
+	ah->config.rimt_last = 250;
+	ah->config.rimt_first = 500;
 
 	/*
 	 * We need this for PCI devices only (Cardbus, PCI, miniPCI)