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--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1846,7 +1846,8 @@ static void ath9k_set_power_sleep(struct
}
/* Clear Bit 14 of AR_WA after putting chip into Full Sleep mode. */
- REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
+ if (AR_SREV_9300_20_OR_LATER(ah))
+ REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
}
/*
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