linux-kernel - Re: [PATCH 1/2] PCI: layerscape: Add support for Link down notification

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Message-ID: <ZLVJi6C0JGGFp//F@lizhi-Precision-Tower-5810>
Date:   Mon, 17 Jul 2023 10:01:11 -0400
From:   Frank Li <Frank.li@....com>
To:     mani@...nel.org, Minghuan Lian <minghuan.Lian@....com>,
        Mingkai Hu <mingkai.hu@....com>, Roy Zang <roy.zang@....com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Rob Herring <robh@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        "open list:PCI DRIVER FOR FREESCALE LAYERSCAPE" 
        <linuxppc-dev@...ts.ozlabs.org>,
        "open list:PCI DRIVER FOR FREESCALE LAYERSCAPE" 
        <linux-pci@...r.kernel.org>,
        "moderated list:PCI DRIVER FOR FREESCALE LAYERSCAPE" 
        <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>
Cc:     imx@...ts.linux.dev
Subject: Re: [PATCH 1/2] PCI: layerscape: Add support for Link down
 notification

O Thu, Jun 15, 2023 at 12:41:11PM -0400, Frank Li wrote:
> Add support to pass Link down notification to Endpoint function driver
> so that the LINK_DOWN event can be processed by the function.
> 
> Signed-off-by: Frank Li <Frank.Li@....com>
> ---

@Lorenzo:
	No comment over 1 months. Just change layerscape
	and 1 line code change.

	Could you please consider pick this up?

Frank Li

>  drivers/pci/controller/dwc/pci-layerscape-ep.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c
> index de4c1758a6c3..4e4fdd1dfea7 100644
> --- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
> +++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
> @@ -88,6 +88,7 @@ static irqreturn_t ls_pcie_ep_event_handler(int irq, void *dev_id)
>  
>  		dev_dbg(pci->dev, "Link up\n");
>  	} else if (val & PEX_PF0_PME_MES_DR_LDD) {
> +		pci_epc_linkdown(pci->ep.epc);
>  		dev_dbg(pci->dev, "Link down\n");
>  	} else if (val & PEX_PF0_PME_MES_DR_HRD) {
>  		dev_dbg(pci->dev, "Hot reset\n");
> -- 
> 2.34.1
>