linux-kernel - Re: [PATCH v9 2/8] PCI: imx6: Add the error propagation from host

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Message-ID: <20220608185313.GA410761@bhelgaas>
Date:   Wed, 8 Jun 2022 13:53:13 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Richard Zhu <hongxing.zhu@....com>
Cc:     l.stach@...gutronix.de, bhelgaas@...gle.com, robh+dt@...nel.org,
        broonie@...nel.org, lorenzo.pieralisi@....com,
        jingoohan1@...il.com, festevam@...il.com,
        francesco.dolcini@...adex.com, linux-pci@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel@...gutronix.de, linux-imx@....com
Subject: Re: [PATCH v9 2/8] PCI: imx6: Add the error propagation from
 host_init

On Fri, May 06, 2022 at 09:47:03AM +0800, Richard Zhu wrote:
> Since there is error return check of the host_init callback, add error
> check to imx6_pcie_deassert_core_reset() function, and change the
> function type accordingly.

> @@ -878,11 +879,18 @@ static int imx6_pcie_start_link(struct dw_pcie *pci)
>  static int imx6_pcie_host_init(struct pcie_port *pp)
>  {
>  	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
> +	struct device *dev = pci->dev;
>  	struct imx6_pcie *imx6_pcie = to_imx6_pcie(pci);
> +	int ret;
>  
>  	imx6_pcie_assert_core_reset(imx6_pcie);
>  	imx6_pcie_init_phy(imx6_pcie);
> -	imx6_pcie_deassert_core_reset(imx6_pcie);
> +	ret = imx6_pcie_deassert_core_reset(imx6_pcie);
> +	if (ret < 0) {
> +		dev_err(dev, "pcie host init failed: %d.\n", ret);

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