netdev - [net-next 12/18] i40e: add little endian conversion for checksum

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Message-Id: <1444258032-41476-13-git-send-email-jeffrey.t.kirsher@intel.com>
Date:	Wed,  7 Oct 2015 15:47:06 -0700
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	davem@...emloft.net
Cc:	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	netdev@...r.kernel.org, nhorman@...hat.com, sassmann@...hat.com,
	jogreene@...hat.com,
	Paul M Stillwell Jr <paul.m.stillwell.jr@...el.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 12/18] i40e: add little endian conversion for checksum

From: Jesse Brandeburg <jesse.brandeburg@...el.com>

The checksum is not correct on big endian machines so add code to swap it
correctly.

Change-ID: Ic92b886d172a2cbe49f5d7eee1bc78e447023c7b
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@...el.com>
Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 drivers/net/ethernet/intel/i40e/i40e_nvm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_nvm.c b/drivers/net/ethernet/intel/i40e/i40e_nvm.c
index d0288ad..2142e10 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_nvm.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_nvm.c
@@ -547,11 +547,13 @@ i40e_status i40e_update_nvm_checksum(struct i40e_hw *hw)
 {
 	i40e_status ret_code = 0;
 	u16 checksum;
+	__le16 le_sum;
 
 	ret_code = i40e_calc_nvm_checksum(hw, &checksum);
+	le_sum = cpu_to_le16(checksum);
 	if (!ret_code)
 		ret_code = i40e_write_nvm_aq(hw, 0x00, I40E_SR_SW_CHECKSUM_WORD,
-					     1, &checksum, true);
+					     1, &le_sum, true);
 
 	return ret_code;
 }
-- 
2.4.3

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