RE: [PATCH v2] phy: freescale: imx8m-pcie: Fix the wrong order of phy_init() and phy_power_on()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



> -----Original Message-----
> From: Bjorn Helgaas <helgaas@xxxxxxxxxx>
> Sent: 2022年9月3日 1:05
> To: Hongxing Zhu <hongxing.zhu@xxxxxxx>
> Cc: a.fatoum@xxxxxxxxxxxxxx; l.stach@xxxxxxxxxxxxxx; bhelgaas@xxxxxxxxxx;
> lorenzo.pieralisi@xxxxxxx; vkoul@xxxxxxxxxx; Marcel Ziswiler
> <marcel.ziswiler@xxxxxxxxxxx>; kishon@xxxxxx; linux-phy@xxxxxxxxxxxxxxxxxxx;
> linux-pci@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx;
> linux-kernel@xxxxxxxxxxxxxxx; kernel@xxxxxxxxxxxxxx; dl-linux-imx
> <linux-imx@xxxxxxx>
> Subject: Re: [PATCH v2] phy: freescale: imx8m-pcie: Fix the wrong order of
> phy_init() and phy_power_on()
> 
> On Wed, Aug 31, 2022 at 02:55:56PM +0800, Richard Zhu wrote:
> > Refer to phy_core driver, phy_init() must be called before phy_power_on().
> > Fix the wrong order of phy_init() and phy_power_on() here.
> 
> > Squash the changes into one patch to avoid the possible bi-section hole.
> 
> Avoiding bisection holes goes without saying, so I don't think we need to even
> mention it ;)
Hi Bjorn:
Understood 😊. Thanks for your kindly help on this fix.
For ease of merging, I would remove that line, and re-send the v3 with Vinod's
 ACK added.

Best Regards
Richard Zhu

> 
> > Fixes: 1aa97b002258 ("phy: freescale: pcie: Initialize the imx8 pcie
> > standalone phy driver")
> > Signed-off-by: Richard Zhu <hongxing.zhu@xxxxxxx>
> > Tested-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>
> 
> I propose merging this via PCI, since I suspect pci-imx6.c is more active than
> phy-fsl-imx8m-pcie.c.
> 
> Vinod, if you agree, I'm sure Lorenzo will look for your ack.
> 
> > ---
> >  drivers/pci/controller/dwc/pci-imx6.c      | 6 +++---
> >  drivers/phy/freescale/phy-fsl-imx8m-pcie.c | 8 ++++----
> >  2 files changed, 7 insertions(+), 7 deletions(-)
> >
> > diff --git a/drivers/pci/controller/dwc/pci-imx6.c
> > b/drivers/pci/controller/dwc/pci-imx6.c
> > index 6e5debdbc55b..b5f0de455a7b 100644
> > --- a/drivers/pci/controller/dwc/pci-imx6.c
> > +++ b/drivers/pci/controller/dwc/pci-imx6.c
> > @@ -935,7 +935,7 @@ static int imx6_pcie_host_init(struct dw_pcie_rp
> *pp)
> >  	}
> >
> >  	if (imx6_pcie->phy) {
> > -		ret = phy_power_on(imx6_pcie->phy);
> > +		ret = phy_init(imx6_pcie->phy);
> >  		if (ret) {
> >  			dev_err(dev, "pcie PHY power up failed\n");
> >  			goto err_clk_disable;
> > @@ -949,7 +949,7 @@ static int imx6_pcie_host_init(struct dw_pcie_rp
> *pp)
> >  	}
> >
> >  	if (imx6_pcie->phy) {
> > -		ret = phy_init(imx6_pcie->phy);
> > +		ret = phy_power_on(imx6_pcie->phy);
> >  		if (ret) {
> >  			dev_err(dev, "waiting for PHY ready timeout!\n");
> >  			goto err_phy_off;
> > @@ -961,7 +961,7 @@ static int imx6_pcie_host_init(struct dw_pcie_rp
> > *pp)
> >
> >  err_phy_off:
> >  	if (imx6_pcie->phy)
> > -		phy_power_off(imx6_pcie->phy);
> > +		phy_exit(imx6_pcie->phy);
> >  err_clk_disable:
> >  	imx6_pcie_clk_disable(imx6_pcie);
> >  err_reg_disable:
> > diff --git a/drivers/phy/freescale/phy-fsl-imx8m-pcie.c
> > b/drivers/phy/freescale/phy-fsl-imx8m-pcie.c
> > index ad7d2edfc414..c93286483b42 100644
> > --- a/drivers/phy/freescale/phy-fsl-imx8m-pcie.c
> > +++ b/drivers/phy/freescale/phy-fsl-imx8m-pcie.c
> > @@ -59,7 +59,7 @@ struct imx8_pcie_phy {
> >  	bool			clkreq_unused;
> >  };
> >
> > -static int imx8_pcie_phy_init(struct phy *phy)
> > +static int imx8_pcie_phy_power_on(struct phy *phy)
> >  {
> >  	int ret;
> >  	u32 val, pad_mode;
> > @@ -137,14 +137,14 @@ static int imx8_pcie_phy_init(struct phy *phy)
> >  	return ret;
> >  }
> >
> > -static int imx8_pcie_phy_power_on(struct phy *phy)
> > +static int imx8_pcie_phy_init(struct phy *phy)
> >  {
> >  	struct imx8_pcie_phy *imx8_phy = phy_get_drvdata(phy);
> >
> >  	return clk_prepare_enable(imx8_phy->clk);
> >  }
> >
> > -static int imx8_pcie_phy_power_off(struct phy *phy)
> > +static int imx8_pcie_phy_exit(struct phy *phy)
> >  {
> >  	struct imx8_pcie_phy *imx8_phy = phy_get_drvdata(phy);
> >
> > @@ -155,8 +155,8 @@ static int imx8_pcie_phy_power_off(struct phy
> > *phy)
> >
> >  static const struct phy_ops imx8_pcie_phy_ops = {
> >  	.init		= imx8_pcie_phy_init,
> > +	.exit		= imx8_pcie_phy_exit,
> >  	.power_on	= imx8_pcie_phy_power_on,
> > -	.power_off	= imx8_pcie_phy_power_off,
> >  	.owner		= THIS_MODULE,
> >  };
> >
> > --
> > 2.25.1
> >
> >
> > --
> > linux-phy mailing list
> > linux-phy@xxxxxxxxxxxxxxxxxxx
> > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flist
> >
> s.infradead.org%2Fmailman%2Flistinfo%2Flinux-phy&amp;data=05%7C01%7C
> ho
> >
> ngxing.zhu%40nxp.com%7Cb81201c8994c4e2b871208da8d0541a1%7C686ea
> 1d3bc2b
> >
> 4c6fa92cd99c5c301635%7C0%7C0%7C637977350972030265%7CUnknown%
> 7CTWFpbGZs
> >
> b3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0
> %3D
> > %7C3000%7C%7C%7C&amp;sdata=gMUzhflQuE92NFlmAP3GBKijjv6lhQEZxu
> xuYFPfosw
> > %3D&amp;reserved=0




[Index of Archives]     [DMA Engine]     [Linux Coverity]     [Linux USB]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Greybus]

  Powered by Linux