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Date:   Wed, 12 Jun 2019 16:13:31 +0100
From:   Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
To:     "Z.q. Hou" <zhiqiang.hou@nxp.com>
Cc:     "linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
        "linux-arm-kernel@lists.infradead.org" 
        <linux-arm-kernel@lists.infradead.org>,
        "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "bhelgaas@google.com" <bhelgaas@google.com>,
        "robh+dt@kernel.org" <robh+dt@kernel.org>,
        "mark.rutland@arm.com" <mark.rutland@arm.com>,
        "l.subrahmanya@mobiveil.co.in" <l.subrahmanya@mobiveil.co.in>,
        "shawnguo@kernel.org" <shawnguo@kernel.org>,
        Leo Li <leoyang.li@nxp.com>,
        "catalin.marinas@arm.com" <catalin.marinas@arm.com>,
        "will.deacon@arm.com" <will.deacon@arm.com>,
        Mingkai Hu <mingkai.hu@nxp.com>,
        "M.h. Lian" <minghuan.lian@nxp.com>,
        Xiaowei Bao <xiaowei.bao@nxp.com>
Subject: Re: [PATCHv5 07/20] PCI: mobiveil: Use WIN_NUM_0 explicitly for CFG
 outbound window
Message-ID: <20190612151331.GE15747@redmoon>
References: <20190412083635.33626-1-Zhiqiang.Hou@nxp.com>
 <20190412083635.33626-8-Zhiqiang.Hou@nxp.com>
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On Fri, Apr 12, 2019 at 08:35:54AM +0000, Z.q. Hou wrote:
> From: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
> 
> As the .map_bus() use the WIN_NUM_0 for CFG transactions,
> it's better passing WIN_NUM_0 explicitly when initialize
> the CFG outbound window.
> 
> Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com>
> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
> ---
> V5:
>  - Corrected the subject.
> 
>  drivers/pci/controller/pcie-mobiveil.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/pci/controller/pcie-mobiveil.c b/drivers/pci/controller/pcie-mobiveil.c
> index b2cc9c097fc9..df71c11b4810 100644
> --- a/drivers/pci/controller/pcie-mobiveil.c
> +++ b/drivers/pci/controller/pcie-mobiveil.c
> @@ -612,9 +612,8 @@ static int mobiveil_host_init(struct mobiveil_pcie *pcie)
>  	 */
>  
>  	/* config outbound translation window */
> -	program_ob_windows(pcie, pcie->ob_wins_configured,
> -			   pcie->ob_io_res->start, 0, CFG_WINDOW_TYPE,
> -			   resource_size(pcie->ob_io_res));
> +	program_ob_windows(pcie, WIN_NUM_0, pcie->ob_io_res->start, 0,
> +			   CFG_WINDOW_TYPE, resource_size(pcie->ob_io_res));

This makes sense - current code is quite obscure and prone to
bugs.

Lorenzo

>  	/* memory inbound translation window */
>  	program_ib_windows(pcie, WIN_NUM_1, 0, MEM_WINDOW_TYPE, IB_WIN_SIZE);
> -- 
> 2.17.1
>