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Merge branch 'net-txgbe-fix-two-bugs-in-txgbe_calc_eeprom_checksum'

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YueHaibing says:

====================
net: txgbe: Fix two bugs in txgbe_calc_eeprom_checksum

Fix memleak and unsigned comparison bugs in txgbe_calc_eeprom_checksum
====================

Link: https://lore.kernel.org/r/20221105080722.20292-1-yuehaibing@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski 2022-11-07 20:00:13 -08:00
commit 91c596cc8d
1 changed files with 6 additions and 4 deletions
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10
drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c
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@ -183,6 +183,7 @@ static int txgbe_calc_eeprom_checksum(struct txgbe_hw *hw, u16 *checksum)
eeprom_ptrs);
if (status != 0) {
wx_err(wxhw, "Failed to read EEPROM image\n");
kvfree(eeprom_ptrs);
return status;
}
local_buffer = eeprom_ptrs;
@ -196,13 +197,14 @@ static int txgbe_calc_eeprom_checksum(struct txgbe_hw *hw, u16 *checksum)
if (i != wxhw->eeprom.sw_region_offset + TXGBE_EEPROM_CHECKSUM)
*checksum += local_buffer[i];
*checksum = TXGBE_EEPROM_SUM - *checksum;
if (*checksum < 0)
return -EINVAL;
if (eeprom_ptrs)
kvfree(eeprom_ptrs);
if (*checksum > TXGBE_EEPROM_SUM)
return -EINVAL;
*checksum = TXGBE_EEPROM_SUM - *checksum;
return 0;
}