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

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Date:   Thu, 9 Jun 2022 06:19:11 +0000
From:   Hongxing Zhu <hongxing.zhu@....com>
To:     Bjorn Helgaas <helgaas@...nel.org>
CC:     "l.stach@...gutronix.de" <l.stach@...gutronix.de>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "lorenzo.pieralisi@....com" <lorenzo.pieralisi@....com>,
        "jingoohan1@...il.com" <jingoohan1@...il.com>,
        "festevam@...il.com" <festevam@...il.com>,
        "francesco.dolcini@...adex.com" <francesco.dolcini@...adex.com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        dl-linux-imx <linux-imx@....com>
Subject: RE: [PATCH v9 2/8] PCI: imx6: Add the error propagation from
 host_init

> -----Original Message-----
> From: Bjorn Helgaas <helgaas@...nel.org>
> Sent: 2022年6月9日 2:53
> To: Hongxing 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; dl-linux-imx
> <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);
> 
> Other messages from this driver do not include a trailing period.
Okay, to keep alignment, would remove the trailing period.
Thanks.

Best Regards
Richard Zhu