linux-kernel - Re: [PATCH] PCI: dwc: Move forward the iATU detection process

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Message-ID: <CAL_JsqKudb9XRTb-_bN=i-sAadQQ40zHrph8f4xZ92cnKxFz3A@mail.gmail.com>
Date:   Fri, 5 Mar 2021 10:18:49 -0600
From:   Rob Herring <robh@...nel.org>
To:     Zhiqiang Hou <Zhiqiang.Hou@....com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        PCI <linux-pci@...r.kernel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Jingoo Han <jingoohan1@...il.com>
Subject: Re: [PATCH] PCI: dwc: Move forward the iATU detection process

On Sun, Jan 24, 2021 at 10:39 PM Zhiqiang Hou <Zhiqiang.Hou@....com> wrote:
>
> From: Hou Zhiqiang <Zhiqiang.Hou@....com>
>
> In the dw_pcie_ep_init(), it depends on the detected iATU region
> numbers to allocate the in/outbound window management bit map.
> It fails after the commit 281f1f99cf3a ("PCI: dwc: Detect number
> of iATU windows").
>
> So this patch move the iATU region detection into a new function,
> move forward the detection to the very beginning of functions
> dw_pcie_host_init() and dw_pcie_ep_init(). And also remove it
> from the dw_pcie_setup(), since it's more like a software
> perspective initialization step than hardware setup.
>
> Fixes: 281f1f99cf3a ("PCI: dwc: Detect number of iATU windows")
> Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@....com>
> ---
>  drivers/pci/controller/dwc/pcie-designware-ep.c   |  2 ++
>  drivers/pci/controller/dwc/pcie-designware-host.c |  2 ++
>  drivers/pci/controller/dwc/pcie-designware.c      | 11 ++++++++---
>  drivers/pci/controller/dwc/pcie-designware.h      |  1 +
>  4 files changed, 13 insertions(+), 3 deletions(-)

Reviewed-by: Rob Herring <robh@...nel.org>

Bjorn, can you pick this up for 5.12. Lorenzo is on holiday.

Rob