linux-kernel - Re: Regression due to "PCI: Do not allocate more buses than available in parent"

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Message-ID: <CAOMZO5BpJDoeZVaD+c600ci5rmEJ0kh_er1voJxsyXR4BdjFpw@mail.gmail.com>
Date:   Fri, 12 Jan 2018 13:17:26 -0200
From:   Fabio Estevam <festevam@...il.com>
To:     Sebastian Reichel <sebastian.reichel@...labora.co.uk>
Cc:     Mika Westerberg <mika.westerberg@...ux.intel.com>,
        linux-pci@...r.kernel.org,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Ian Ray <ian.ray@...com>, Nandor Han <nandor.han@...com>
Subject: Re: Regression due to "PCI: Do not allocate more buses than available
 in parent"

Hi Sebastian,

On Fri, Jan 12, 2018 at 1:07 PM, Sebastian Reichel
<sebastian.reichel@...labora.co.uk> wrote:
> Hi,
>
> I have an ARM/DT based system [0], that no longer finds its ethernet cards
> behind a PCIe switch. I bisected the problem and ended up on
> a20c7f36bd3d. I tried providing some space using the suggested "pci=hpbussize=<N>",
> but it does not seem to work.
>
> I added dmesg for working, broken and broken + parameter below. At
> the moment I would say this is a regression and the commit should be
> reverted.

Does this patch fix the problem?
https://patchwork.ozlabs.org/patch/857566/