Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0c254d86 authored by Auke Kok's avatar Auke Kok Committed by Jeff Garzik
Browse files

ixgbe: warn when device is in a x4 or lower width slot 



It's easy to oversee this issue when working with this card
as evrything will work OK but performance is severely limited
(something like 1.5gbit on a x1 link) if the pci-express
slot does not offer more bandwidth.

Signed-off-by: default avatarAuke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 23b66e2b

drivers/net/ixgbe/ixgbe_main.c

+8 −0
Original line number Diff line number Diff line
@@ -2778,6 +2778,14 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev, 
		 hw->mac.type, hw->phy.type,

		 (part_num >> 8), (part_num & 0xff));



	if (link_width <= IXGBE_PCI_LINK_WIDTH_4) {

		dev_warn(&pdev->dev, "PCI-Express bandwidth available for "

			 "this card is not sufficient for optimal "

			 "performance.\n");

		dev_warn(&pdev->dev, "For optimal performance a x8 "

			 "PCI-Express slot is required.\n");

	}



	/* reset the hardware with the new settings */

	ixgbe_start_hw(hw);