netdev - [net-next 02/15] igb: read PBA number from flash

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Message-Id: <20200928175908.318502-3-anthony.l.nguyen@intel.com>
Date:   Mon, 28 Sep 2020 10:58:55 -0700
From:   Tony Nguyen <anthony.l.nguyen@...el.com>
To:     davem@...emloft.net
Cc:     Gal Hammer <ghammer@...hat.com>, netdev@...r.kernel.org,
        nhorman@...hat.com, sassmann@...hat.com,
        anthony.l.nguyen@...el.com, Aaron Brown <aaron.f.brown@...el.com>
Subject: [net-next 02/15] igb: read PBA number from flash

From: Gal Hammer <ghammer@...hat.com>

Fixed flash presence check for 82576 controllers so the part
number string is read and displayed correctly.

Signed-off-by: Gal Hammer <ghammer@...hat.com>
Tested-by: Aaron Brown <aaron.f.brown@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/igb/igb_main.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 73125d11460f..d5c65850826e 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -3532,7 +3532,9 @@ static int igb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 			  "Width x1" : "unknown"), netdev->dev_addr);
 	}
 
-	if ((hw->mac.type >= e1000_i210 ||
+	if ((hw->mac.type == e1000_82576 &&
+	     rd32(E1000_EECD) & E1000_EECD_PRES) ||
+	    (hw->mac.type >= e1000_i210 ||
 	     igb_get_flash_presence_i210(hw))) {
 		ret_val = igb_read_part_string(hw, part_str,
 					       E1000_PBANUM_LENGTH);
-- 
2.26.2