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Date: Fri, 16 Oct 2020 17:01:26 -0700 From: Jakub Kicinski <kuba@...nel.org> To: Ian Kumlien <ian.kumlien@...il.com>, anthony.l.nguyen@...el.com Cc: David Miller <davem@...emloft.net>, Linux Kernel Network Developers <netdev@...r.kernel.org>, kernel-team@...com, jesse.brandeburg@...el.com, Bartosz Golaszewski <bgolaszewski@...libre.com> Subject: Re: [PATCH net] ixgbe: fix probing of multi-port devices with one MDIO On Sat, 17 Oct 2020 01:50:59 +0200 Ian Kumlien wrote: > On Sat, Oct 17, 2020 at 1:20 AM Jakub Kicinski <kuba@...nel.org> wrote: > > Ian reports that after upgrade from v5.8.14 to v5.9 only one > > of his 4 ixgbe netdevs appear in the system. > > > > Quoting the comment on ixgbe_x550em_a_has_mii(): > > * Returns true if hw points to lowest numbered PCI B:D.F x550_em_a device in > > * the SoC. There are up to 4 MACs sharing a single MDIO bus on the x550em_a, > > * but we only want to register one MDIO bus. > > > > This matches the symptoms, since the return value from > > ixgbe_mii_bus_init() is no longer ignored we need to handle > > the higher ports of x550em without an error. > > Nice, that fixes it! > > You can add a: > Tested-by: Ian Kumlien <ian.kumlien@...il.com> Will do, thanks! Tony, should I apply directly to net?
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