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-rw-r--r--drivers/net/wireless/ath/ath9k/ar9003_eeprom.c10
-rw-r--r--drivers/net/wireless/ath/ath9k/eeprom_9287.c10
2 files changed, 16 insertions, 4 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
index 0ca7635d066..ff8150e46f0 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -4645,10 +4645,16 @@ static void ar9003_hw_set_power_per_rate_table(struct ath_hw *ah,
case 1:
break;
case 2:
- scaledPower -= REDUCE_SCALED_POWER_BY_TWO_CHAIN;
+ if (scaledPower > REDUCE_SCALED_POWER_BY_TWO_CHAIN)
+ scaledPower -= REDUCE_SCALED_POWER_BY_TWO_CHAIN;
+ else
+ scaledPower = 0;
break;
case 3:
- scaledPower -= REDUCE_SCALED_POWER_BY_THREE_CHAIN;
+ if (scaledPower > REDUCE_SCALED_POWER_BY_THREE_CHAIN)
+ scaledPower -= REDUCE_SCALED_POWER_BY_THREE_CHAIN;
+ else
+ scaledPower = 0;
break;
}
diff --git a/drivers/net/wireless/ath/ath9k/eeprom_9287.c b/drivers/net/wireless/ath/ath9k/eeprom_9287.c
index 7856f0d4512..343fc9f946d 100644
--- a/drivers/net/wireless/ath/ath9k/eeprom_9287.c
+++ b/drivers/net/wireless/ath/ath9k/eeprom_9287.c
@@ -524,10 +524,16 @@ static void ath9k_hw_set_ar9287_power_per_rate_table(struct ath_hw *ah,
case 1:
break;
case 2:
- scaledPower -= REDUCE_SCALED_POWER_BY_TWO_CHAIN;
+ if (scaledPower > REDUCE_SCALED_POWER_BY_TWO_CHAIN)
+ scaledPower -= REDUCE_SCALED_POWER_BY_TWO_CHAIN;
+ else
+ scaledPower = 0;
break;
case 3:
- scaledPower -= REDUCE_SCALED_POWER_BY_THREE_CHAIN;
+ if (scaledPower > REDUCE_SCALED_POWER_BY_THREE_CHAIN)
+ scaledPower -= REDUCE_SCALED_POWER_BY_THREE_CHAIN;
+ else
+ scaledPower = 0;
break;
}
scaledPower = max((u16)0, scaledPower);