linux-kernel - Re: [PATCH v4 1/2] PCI: layerscape: Add support for Link down notification

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Message-ID: <ZNzw7MPF00t3i3bn@lizhi-Precision-Tower-5810>
Date:   Wed, 16 Aug 2023 11:53:16 -0400
From:   Frank Li <Frank.li@....com>
To:     lpieralisi@...nel.org
Cc:     Zhiqiang.Hou@....com, bhelgaas@...gle.com, imx@...ts.linux.dev,
        kernel-janitors@...r.kernel.org, kw@...ux.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-pci@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        mani@...nel.org, markus.elfring@....de, minghuan.Lian@....com,
        mingkai.hu@....com, robh@...nel.org, roy.zang@....com,
        xiaowei.bao@....com
Subject: Re: [PATCH v4 1/2] PCI: layerscape: Add support for Link down
 notification

On Mon, Jul 31, 2023 at 11:06:31AM -0400, Frank Li wrote:
> On Thu, Jul 20, 2023 at 09:58:33AM -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.
> > 
> > Acked-by: Manivannan Sadhasivam <mani@...nel.org>
> > Signed-off-by: Frank Li <Frank.Li@....com>
> > ---
> 
> @Lorenzo
> 
> Could you please consider pick both patches?
> Manivannan already reviewed and only impact layerscape.

@lorenzo:
	ping

> 
> Frank
> 
> > Change from v2 to v4
> >  - none
> > Change from v1 to v2
> > 
> >  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..e0969ff2ddf7 100644
> > --- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
> > +++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
> > @@ -89,6 +89,7 @@ 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) {
> >  		dev_dbg(pci->dev, "Link down\n");
> > +		pci_epc_linkdown(pci->ep.epc);
> >  	} else if (val & PEX_PF0_PME_MES_DR_HRD) {
> >  		dev_dbg(pci->dev, "Hot reset\n");
> >  	}
> > -- 
> > 2.34.1
> >