netdev - [PATCH] igb: read PBA number from flash

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Message-Id: <20200820085440.322198-1-ghammer@redhat.com>
Date:   Thu, 20 Aug 2020 11:54:40 +0300
From:   Gal Hammer <ghammer@...hat.com>
To:     netdev@...r.kernel.org
Cc:     Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Marcel Apfelbaum <mapfelba@...hat.com>,
        Gal Hammer <ghammer@...hat.com>
Subject: [PATCH] igb: read PBA number from flash

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

Signed-off-by: Gal Hammer <ghammer@...hat.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 4f05f6efe6af..9b6992adccd4 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -3389,7 +3389,9 @@ 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