From 06d85f7c7aba5fc21edb76a8f8e835bb1fec15da Mon Sep 17 00:00:00 2001 From: Wei Dai Date: Wed, 21 Dec 2016 17:47:52 +0800 Subject: [PATCH] net/ixgbe/base: cleanup X540 checksum calculation The variable checksum_last_word is used only for bounds check. So remove this variable and use IXGBE_EEPROM_CHECKSUM directly. Signed-off-by: Wei Dai --- drivers/net/ixgbe/base/ixgbe_x540.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/net/ixgbe/base/ixgbe_x540.c b/drivers/net/ixgbe/base/ixgbe_x540.c index 6e778bc970..49bf15434c 100644 --- a/drivers/net/ixgbe/base/ixgbe_x540.c +++ b/drivers/net/ixgbe/base/ixgbe_x540.c @@ -491,7 +491,6 @@ s32 ixgbe_calc_eeprom_checksum_X540(struct ixgbe_hw *hw) u16 length = 0; u16 pointer = 0; u16 word = 0; - u16 checksum_last_word = IXGBE_EEPROM_CHECKSUM; u16 ptr_start = IXGBE_PCIE_ANALOG_PTR; /* Do not use hw->eeprom.ops.read because we do not want to take @@ -501,14 +500,15 @@ s32 ixgbe_calc_eeprom_checksum_X540(struct ixgbe_hw *hw) DEBUGFUNC("ixgbe_calc_eeprom_checksum_X540"); - /* Include 0x0-0x3F in the checksum */ - for (i = 0; i <= checksum_last_word; i++) { + /* Include 0x0 up to IXGBE_EEPROM_CHECKSUM; do not include the + * checksum itself + */ + for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) { if (ixgbe_read_eerd_generic(hw, i, &word)) { DEBUGOUT("EEPROM read failed\n"); return IXGBE_ERR_EEPROM; } - if (i != IXGBE_EEPROM_CHECKSUM) - checksum += word; + checksum += word; } /* Include all data from pointers 0x3, 0x6-0xE. This excludes the -- 2.20.1