diff mbox series

[RESEND,v2,2/5] PCI: imx6: Add the error propagation from host_init

Message ID 1634277941-6672-3-git-send-email-hongxing.zhu@nxp.com (mailing list archive)
State Superseded
Delegated to: Lorenzo Pieralisi
Headers show
Series PCI: imx6: refine codes and add compliance tests mode support | expand

Commit Message

Richard Zhu Oct. 15, 2021, 6:05 a.m. UTC 
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.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
---
 drivers/pci/controller/dwc/pci-imx6.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

Comments

Lucas Stach Oct. 15, 2021, 6:16 p.m. UTC | #1 
Am Freitag, dem 15.10.2021 um 14:05 +0800 schrieb Richard Zhu:
> 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.
> 
> Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>

Reviewed-by: Lucas Stach <l.stach@pengutronix.de>

> ---
>  drivers/pci/controller/dwc/pci-imx6.c | 24 ++++++++++++++++--------
>  1 file changed, 16 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
> index 1fa1dba6da81..3372775834a2 100644
> --- a/drivers/pci/controller/dwc/pci-imx6.c
> +++ b/drivers/pci/controller/dwc/pci-imx6.c
> @@ -527,24 +527,24 @@ static void imx7d_pcie_wait_for_phy_pll_lock(struct imx6_pcie *imx6_pcie)
>  		dev_err(dev, "PCIe PLL lock timeout\n");
>  }
>  
> -static void imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie)
> +static int imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie)
>  {
>  	struct dw_pcie *pci = imx6_pcie->pci;
>  	struct device *dev = pci->dev;
> -	int ret;
> +	int ret, err;
>  
>  	if (imx6_pcie->vpcie && !regulator_is_enabled(imx6_pcie->vpcie)) {
>  		ret = regulator_enable(imx6_pcie->vpcie);
>  		if (ret) {
>  			dev_err(dev, "failed to enable vpcie regulator: %d\n",
>  				ret);
> -			return;
> +			return ret;
>  		}
>  	}
>  
> -	ret = imx6_pcie_clk_enable(imx6_pcie);
> -	if (ret) {
> -		dev_err(dev, "unable to enable pcie clocks\n");
> +	err = imx6_pcie_clk_enable(imx6_pcie);
> +	if (err) {
> +		dev_err(dev, "unable to enable pcie clocks: %d\n", err);
>  		goto err_clks;
>  	}
>  
> @@ -599,7 +599,7 @@ static void imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie)
>  		break;
>  	}
>  
> -	return;
> +	return 0;
>  
>  err_clks:
>  	if (imx6_pcie->vpcie && regulator_is_enabled(imx6_pcie->vpcie) > 0) {
> @@ -608,6 +608,7 @@ static void imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie)
>  			dev_err(dev, "failed to disable vpcie regulator: %d\n",
>  				ret);
>  	}
> +	return err;
>  }
>  
>  static void imx6_pcie_configure_type(struct imx6_pcie *imx6_pcie)
> @@ -858,11 +859,18 @@ 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);
> +		return ret;
> +	}
> +
>  	imx6_setup_phy_mpll(imx6_pcie);
>  
>  	return 0;
Richard Zhu Oct. 19, 2021, 7:33 a.m. UTC | #2 
> -----Original Message-----
> From: Lucas Stach <l.stach@pengutronix.de>
> Sent: Saturday, October 16, 2021 2:16 AM
> To: Richard Zhu <hongxing.zhu@nxp.com>; bhelgaas@google.com;
> lorenzo.pieralisi@arm.com
> Cc: linux-pci@vger.kernel.org; dl-linux-imx <linux-imx@nxp.com>;
> linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org;
> kernel@pengutronix.de
> Subject: Re: [RESEND v2 2/5] PCI: imx6: Add the error propagation from
> host_init
> 
> Am Freitag, dem 15.10.2021 um 14:05 +0800 schrieb Richard Zhu:
> > 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.
> >
> > Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
> 
> Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
> 
[Richard Zhu] Thanks.

Best Regards
Richard Zhu
> > ---
> >  drivers/pci/controller/dwc/pci-imx6.c | 24 ++++++++++++++++--------
> >  1 file changed, 16 insertions(+), 8 deletions(-)
> >
> > diff --git a/drivers/pci/controller/dwc/pci-imx6.c
> > b/drivers/pci/controller/dwc/pci-imx6.c
> > index 1fa1dba6da81..3372775834a2 100644
> > --- a/drivers/pci/controller/dwc/pci-imx6.c
> > +++ b/drivers/pci/controller/dwc/pci-imx6.c
> > @@ -527,24 +527,24 @@ static void
> imx7d_pcie_wait_for_phy_pll_lock(struct imx6_pcie *imx6_pcie)
> >  		dev_err(dev, "PCIe PLL lock timeout\n");  }
> >
> > -static void imx6_pcie_deassert_core_reset(struct imx6_pcie
> > *imx6_pcie)
> > +static int imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie)
> >  {
> >  	struct dw_pcie *pci = imx6_pcie->pci;
> >  	struct device *dev = pci->dev;
> > -	int ret;
> > +	int ret, err;
> >
> >  	if (imx6_pcie->vpcie && !regulator_is_enabled(imx6_pcie->vpcie)) {
> >  		ret = regulator_enable(imx6_pcie->vpcie);
> >  		if (ret) {
> >  			dev_err(dev, "failed to enable vpcie regulator: %d\n",
> >  				ret);
> > -			return;
> > +			return ret;
> >  		}
> >  	}
> >
> > -	ret = imx6_pcie_clk_enable(imx6_pcie);
> > -	if (ret) {
> > -		dev_err(dev, "unable to enable pcie clocks\n");
> > +	err = imx6_pcie_clk_enable(imx6_pcie);
> > +	if (err) {
> > +		dev_err(dev, "unable to enable pcie clocks: %d\n", err);
> >  		goto err_clks;
> >  	}
> >
> > @@ -599,7 +599,7 @@ static void imx6_pcie_deassert_core_reset(struct
> imx6_pcie *imx6_pcie)
> >  		break;
> >  	}
> >
> > -	return;
> > +	return 0;
> >
> >  err_clks:
> >  	if (imx6_pcie->vpcie && regulator_is_enabled(imx6_pcie->vpcie) > 0)
> > { @@ -608,6 +608,7 @@ static void imx6_pcie_deassert_core_reset(struct
> imx6_pcie *imx6_pcie)
> >  			dev_err(dev, "failed to disable vpcie regulator: %d\n",
> >  				ret);
> >  	}
> > +	return err;
> >  }
> >
> >  static void imx6_pcie_configure_type(struct imx6_pcie *imx6_pcie) @@
> > -858,11 +859,18 @@ 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);
> > +		return ret;
> > +	}
> > +
> >  	imx6_setup_phy_mpll(imx6_pcie);
> >
> >  	return 0;
>
diff mbox series

Patch

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 1fa1dba6da81..3372775834a2 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -527,24 +527,24 @@  static void imx7d_pcie_wait_for_phy_pll_lock(struct imx6_pcie *imx6_pcie)
 		dev_err(dev, "PCIe PLL lock timeout\n");
 }
 
-static void imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie)
+static int imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie)
 {
 	struct dw_pcie *pci = imx6_pcie->pci;
 	struct device *dev = pci->dev;
-	int ret;
+	int ret, err;
 
 	if (imx6_pcie->vpcie && !regulator_is_enabled(imx6_pcie->vpcie)) {
 		ret = regulator_enable(imx6_pcie->vpcie);
 		if (ret) {
 			dev_err(dev, "failed to enable vpcie regulator: %d\n",
 				ret);
-			return;
+			return ret;
 		}
 	}
 
-	ret = imx6_pcie_clk_enable(imx6_pcie);
-	if (ret) {
-		dev_err(dev, "unable to enable pcie clocks\n");
+	err = imx6_pcie_clk_enable(imx6_pcie);
+	if (err) {
+		dev_err(dev, "unable to enable pcie clocks: %d\n", err);
 		goto err_clks;
 	}
 
@@ -599,7 +599,7 @@  static void imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie)
 		break;
 	}
 
-	return;
+	return 0;
 
 err_clks:
 	if (imx6_pcie->vpcie && regulator_is_enabled(imx6_pcie->vpcie) > 0) {
@@ -608,6 +608,7 @@  static void imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie)
 			dev_err(dev, "failed to disable vpcie regulator: %d\n",
 				ret);
 	}
+	return err;
 }
 
 static void imx6_pcie_configure_type(struct imx6_pcie *imx6_pcie)
@@ -858,11 +859,18 @@  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);
+		return ret;
+	}
+
 	imx6_setup_phy_mpll(imx6_pcie);
 
 	return 0;