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Date: Mon, 26 Feb 2024 12:20:41 -0500
From: Frank Li <Frank.li@....com>
To: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc: Jingoo Han <jingoohan1@...il.com>,
	Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof WilczyƄski <kw@...ux.com>,
	Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
	Marek Vasut <marek.vasut+renesas@...il.com>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
	Thierry Reding <thierry.reding@...il.com>,
	Jonathan Hunter <jonathanh@...dia.com>,
	Kishon Vijay Abraham I <kishon@...com>,
	Vidya Sagar <vidyas@...dia.com>,
	Vignesh Raghavendra <vigneshr@...com>,
	Richard Zhu <hongxing.zhu@....com>,
	Lucas Stach <l.stach@...gutronix.de>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	NXP Linux Team <linux-imx@....com>,
	Minghuan Lian <minghuan.Lian@....com>,
	Mingkai Hu <mingkai.hu@....com>, Roy Zang <roy.zang@....com>,
	Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	linux-tegra@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linuxppc-dev@...ts.ozlabs.org,
	Niklas Cassel <cassel@...nel.org>
Subject: Re: [PATCH v8 09/10] PCI: qcom-ep: Use the generic
 dw_pcie_ep_linkdown() API to handle LINK_DOWN event

On Sat, Feb 24, 2024 at 12:24:15PM +0530, Manivannan Sadhasivam wrote:
> Now that the API is available, let's make use of it. It also handles the
> reinitialization of DWC non-sticky registers in addition to sending the
> notification to EPF drivers.
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> ---
>  drivers/pci/controller/dwc/pcie-qcom-ep.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/controller/dwc/pcie-qcom-ep.c b/drivers/pci/controller/dwc/pcie-qcom-ep.c
> index 2fb8c15e7a91..4e45bc4bca45 100644
> --- a/drivers/pci/controller/dwc/pcie-qcom-ep.c
> +++ b/drivers/pci/controller/dwc/pcie-qcom-ep.c
> @@ -640,7 +640,7 @@ static irqreturn_t qcom_pcie_ep_global_irq_thread(int irq, void *data)
>  	if (FIELD_GET(PARF_INT_ALL_LINK_DOWN, status)) {
>  		dev_dbg(dev, "Received Linkdown event\n");
>  		pcie_ep->link_status = QCOM_PCIE_EP_LINK_DOWN;
> -		pci_epc_linkdown(pci->ep.epc);
> +		dw_pcie_ep_linkdown(&pci->ep);

Suppose pci_epc_linkdown() will call dw_pcie_ep_linkdown() ?
why need direct call dw_pcie_ep_linkdown() here?

Frank

>  	} else if (FIELD_GET(PARF_INT_ALL_BME, status)) {
>  		dev_dbg(dev, "Received BME event. Link is enabled!\n");
>  		pcie_ep->link_status = QCOM_PCIE_EP_LINK_ENABLED;
> 
> -- 
> 2.25.1
> 

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