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-rw-r--r--drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c
index 9cf5fe33118e..167f7ff73192 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c
@@ -200,10 +200,11 @@ static int txgbe_calc_eeprom_checksum(struct txgbe_hw *hw, u16 *checksum)
if (eeprom_ptrs)
kvfree(eeprom_ptrs);
- *checksum = TXGBE_EEPROM_SUM - *checksum;
- if (*checksum < 0)
+ if (*checksum > TXGBE_EEPROM_SUM)
return -EINVAL;
+ *checksum = TXGBE_EEPROM_SUM - *checksum;
+
return 0;
}