net: txgbe: fix eeprom calculation error

For some device types like TXGBE_ID_XAUI, *checksum computed in
txgbe_calc_eeprom_checksum() is larger than TXGBE_EEPROM_SUM. Remove the
limit on the size of *checksum.

Fixes: 049fe5365324 ("net: txgbe: Add operations to interact with firmware")
Fixes: 5e2ea7801fac ("net: txgbe: Fix unsigned comparison to zero in txgbe_calc_eeprom_checksum()")
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Link: https://lore.kernel.org/r/20230711063414.3311-1-jiawenwu@trustnetic.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c
index 12405d7..0772eb1 100644 (file)
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c
@@ -186,9 +186,6 @@ static int txgbe_calc_eeprom_checksum(struct wx *wx, u16 *checksum)
        if (eeprom_ptrs)
                kvfree(eeprom_ptrs);
 
-       if (*checksum > TXGBE_EEPROM_SUM)
-               return -EINVAL;
-
        *checksum = TXGBE_EEPROM_SUM - *checksum;
 
        return 0;