linux-kernel - Re: [PATCH v2 3/3] PCI: imx: Initial imx7d pm support

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Message-ID: <CAOMZO5BQjxeGOUE3jwbA_sRuYWQkHTJo3AeywXXpm-9kVdsYfw@mail.gmail.com>
Date:   Fri, 20 Jul 2018 10:38:18 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Leonard Crestez <leonard.crestez@....com>
Cc:     Lucas Stach <l.stach@...gutronix.de>,
        Richard Zhu <hongxing.zhu@....com>,
        Andrey Smirnov <andrew.smirnov@...il.com>,
        Dong Aisheng <aisheng.dong@....com>,
        Joao Pinto <Joao.Pinto@...opsys.com>, linux-pm@...r.kernel.org,
        Jingoo Han <jingoohan1@...il.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Fabio Estevam <fabio.estevam@....com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        NXP Linux Team <linux-imx@....com>,
        Sascha Hauer <kernel@...gutronix.de>,
        linux-pci@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
        Shawn Guo <shawnguo@...nel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 3/3] PCI: imx: Initial imx7d pm support

Hi Leonard,

On Fri, Jul 20, 2018 at 9:47 AM, Leonard Crestez
<leonard.crestez@....com> wrote:

> +static int imx6_pcie_resume_noirq(struct device *dev)
> +{
> +       int ret = 0;

There is no need for initializing 'ret' here.

> +       struct imx6_pcie *imx6_pcie = dev_get_drvdata(dev);
> +       struct pcie_port *pp = &imx6_pcie->pci->pp;
> +
> +       if (imx6_pcie->variant != IMX7D)
> +               return 0;
> +
> +       imx6_pcie_assert_core_reset(imx6_pcie);
> +       imx6_pcie_init_phy(imx6_pcie);
> +       imx6_pcie_deassert_core_reset(imx6_pcie);
> +       dw_pcie_setup_rc(pp);
> +
> +       ret = imx6_pcie_establish_link(imx6_pcie);
> +       if (ret < 0)
> +               pr_err("pcie link is down after resume.\n");

Shouldn't the error be propagated?

Also, dev_err() is preferred instead of pr_err().