netdev - [PATCH net-next 1/2] i40e: little endian only valid checksums

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Message-Id: <20220317160236.3534321-2-anthony.l.nguyen@intel.com>
Date:   Thu, 17 Mar 2022 09:02:35 -0700
From:   Tony Nguyen <anthony.l.nguyen@...el.com>
To:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com
Cc:     Tom Rix <trix@...hat.com>, netdev@...r.kernel.org,
        anthony.l.nguyen@...el.com, Gurucharan G <gurucharanx.g@...el.com>
Subject: [PATCH net-next 1/2] i40e: little endian only valid checksums

From: Tom Rix <trix@...hat.com>

The calculation of the checksum can fail.
So move converting the checksum to little endian
to inside the return status check.

Signed-off-by: Tom Rix <trix@...hat.com>
Tested-by: Gurucharan G <gurucharanx.g@...el.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/i40e/i40e_nvm.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_nvm.c b/drivers/net/ethernet/intel/i40e/i40e_nvm.c
index fe6dca846028..3a38bf8bcde7 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_nvm.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_nvm.c
@@ -682,10 +682,11 @@ i40e_status i40e_update_nvm_checksum(struct i40e_hw *hw)
 	__le16 le_sum;
 
 	ret_code = i40e_calc_nvm_checksum(hw, &checksum);
-	le_sum = cpu_to_le16(checksum);
-	if (!ret_code)
+	if (!ret_code) {
+		le_sum = cpu_to_le16(checksum);
 		ret_code = i40e_write_nvm_aq(hw, 0x00, I40E_SR_SW_CHECKSUM_WORD,
 					     1, &le_sum, true);
+	}
 
 	return ret_code;
 }
-- 
2.31.1