diff mbox series

drm/rockchip: dsi: convert to dev_err_probe in probe function

Message ID 20241108144425.1009916-1-heiko@sntech.de (mailing list archive)
State New
Headers show
Series drm/rockchip: dsi: convert to dev_err_probe in probe function | expand

Commit Message

Heiko Stübner Nov. 8, 2024, 2:44 p.m. UTC 
From: Heiko Stuebner <heiko.stuebner@cherry.de>

DRM_DEV_ERROR is deprecated and using dev_err_probe saves quite a number
of lines too, so convert the error prints for the dsi-driver.

Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
---
 .../gpu/drm/rockchip/dw-mipi-dsi-rockchip.c   | 80 ++++++-------------
 1 file changed, 26 insertions(+), 54 deletions(-)

Comments

Diederik de Haas Nov. 8, 2024, 3:21 p.m. UTC | #1 
On Fri Nov 8, 2024 at 3:44 PM CET, Heiko Stuebner wrote:
> From: Heiko Stuebner <heiko.stuebner@cherry.de>
>
> DRM_DEV_ERROR is deprecated and using dev_err_probe saves quite a number
> of lines too, so convert the error prints for the dsi-driver.
>
> Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>

Should this have a Fixes tag?
Because in the PineTab2 case it reported an error, which was actually
just a deferred probe.

> ---
>  .../gpu/drm/rockchip/dw-mipi-dsi-rockchip.c   | 80 ++++++-------------
>  1 file changed, 26 insertions(+), 54 deletions(-)
>
> diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
> index 58a44af0e9ad..3224ab749352 100644
> --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
> +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
> ...
> @@ -1378,67 +1376,47 @@ static int dw_mipi_dsi_rockchip_probe(struct platform_device *pdev)
>  		i++;
>  	}
>  
> -	if (!dsi->cdata) {
> -		DRM_DEV_ERROR(dev, "no dsi-config for %s node\n", np->name);
> -		return -EINVAL;
> -	}
> +	if (!dsi->cdata)
> +		return dev_err_probe(dev, -EINVAL, "No dsi-config for %s node\n", np->name);
>  
>  	/* try to get a possible external dphy */
>  	dsi->phy = devm_phy_optional_get(dev, "dphy");
> -	if (IS_ERR(dsi->phy)) {
> -		ret = PTR_ERR(dsi->phy);
> -		DRM_DEV_ERROR(dev, "failed to get mipi dphy: %d\n", ret);
> -		return ret;
> -	}
> +	if (IS_ERR(dsi->phy))
> +		return dev_err_probe(dev, PTR_ERR(dsi->phy), "Failed to get mipi dphy\n");

I think from this line.

Cheers,
  Diederik

>  
>  	dsi->pclk = devm_clk_get(dev, "pclk");
> -	if (IS_ERR(dsi->pclk)) {
> -		ret = PTR_ERR(dsi->pclk);
> -		DRM_DEV_ERROR(dev, "Unable to get pclk: %d\n", ret);
> -		return ret;
> -	}
> +	if (IS_ERR(dsi->pclk))
> +		return dev_err_probe(dev, PTR_ERR(dsi->pclk), "Unable to get pclk\n");
>  
>  	dsi->pllref_clk = devm_clk_get(dev, "ref");
>  	if (IS_ERR(dsi->pllref_clk)) {
> -		if (dsi->phy) {
> +		if (dsi->phy)
>  			/*
>  			 * if external phy is present, pll will be
>  			 * generated there.
>  			 */
>  			dsi->pllref_clk = NULL;
> -		} else {
> -			ret = PTR_ERR(dsi->pllref_clk);
> -			DRM_DEV_ERROR(dev,
> -				      "Unable to get pll reference clock: %d\n",
> -				      ret);
> -			return ret;
> -		}
> +		else
> +			return dev_err_probe(dev, PTR_ERR(dsi->pllref_clk),
> +					     "Unable to get pll reference clock\n");
>  	}
>  
>  	if (dsi->cdata->flags & DW_MIPI_NEEDS_PHY_CFG_CLK) {
>  		dsi->phy_cfg_clk = devm_clk_get(dev, "phy_cfg");
> -		if (IS_ERR(dsi->phy_cfg_clk)) {
> -			ret = PTR_ERR(dsi->phy_cfg_clk);
> -			DRM_DEV_ERROR(dev,
> -				      "Unable to get phy_cfg_clk: %d\n", ret);
> -			return ret;
> -		}
> +		if (IS_ERR(dsi->phy_cfg_clk))
> +			return dev_err_probe(dev, PTR_ERR(dsi->phy_cfg_clk),
> +					     "Unable to get phy_cfg_clk\n");
>  	}
>  
>  	if (dsi->cdata->flags & DW_MIPI_NEEDS_GRF_CLK) {
>  		dsi->grf_clk = devm_clk_get(dev, "grf");
> -		if (IS_ERR(dsi->grf_clk)) {
> -			ret = PTR_ERR(dsi->grf_clk);
> -			DRM_DEV_ERROR(dev, "Unable to get grf_clk: %d\n", ret);
> -			return ret;
> -		}
> +		if (IS_ERR(dsi->grf_clk))
> +			return dev_err_probe(dev, PTR_ERR(dsi->grf_clk), "Unable to get grf_clk\n");
>  	}
>  
>  	dsi->grf_regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
> -	if (IS_ERR(dsi->grf_regmap)) {
> -		DRM_DEV_ERROR(dev, "Unable to get rockchip,grf\n");
> -		return PTR_ERR(dsi->grf_regmap);
> -	}
> +	if (IS_ERR(dsi->grf_regmap))
> +		return dev_err_probe(dev, PTR_ERR(dsi->grf_regmap), "Unable to get rockchip,grf\n");
>  
>  	dsi->dev = dev;
>  	dsi->pdata.base = dsi->base;
> ...
Heiko Stübner Nov. 8, 2024, 4:31 p.m. UTC | #2 
Am Freitag, 8. November 2024, 16:21:24 CET schrieb Diederik de Haas:
> On Fri Nov 8, 2024 at 3:44 PM CET, Heiko Stuebner wrote:
> > From: Heiko Stuebner <heiko.stuebner@cherry.de>
> >
> > DRM_DEV_ERROR is deprecated and using dev_err_probe saves quite a number
> > of lines too, so convert the error prints for the dsi-driver.
> >
> > Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
> 
> Should this have a Fixes tag?
> Because in the PineTab2 case it reported an error, which was actually
> just a deferred probe.

A deferred-probe is an error ;-)   -517 in fact  ... just that convention
nowadays is to not actively report on it but "fail" silently.

So personally I don't really consider it a fix, but more a style thing.
I guess I'll let others chime in for that.


Heiko

> 
> > ---
> >  .../gpu/drm/rockchip/dw-mipi-dsi-rockchip.c   | 80 ++++++-------------
> >  1 file changed, 26 insertions(+), 54 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
> > index 58a44af0e9ad..3224ab749352 100644
> > --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
> > +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
> > ...
> > @@ -1378,67 +1376,47 @@ static int dw_mipi_dsi_rockchip_probe(struct platform_device *pdev)
> >  		i++;
> >  	}
> >  
> > -	if (!dsi->cdata) {
> > -		DRM_DEV_ERROR(dev, "no dsi-config for %s node\n", np->name);
> > -		return -EINVAL;
> > -	}
> > +	if (!dsi->cdata)
> > +		return dev_err_probe(dev, -EINVAL, "No dsi-config for %s node\n", np->name);
> >  
> >  	/* try to get a possible external dphy */
> >  	dsi->phy = devm_phy_optional_get(dev, "dphy");
> > -	if (IS_ERR(dsi->phy)) {
> > -		ret = PTR_ERR(dsi->phy);
> > -		DRM_DEV_ERROR(dev, "failed to get mipi dphy: %d\n", ret);
> > -		return ret;
> > -	}
> > +	if (IS_ERR(dsi->phy))
> > +		return dev_err_probe(dev, PTR_ERR(dsi->phy), "Failed to get mipi dphy\n");
> 
> I think from this line.
> 
> Cheers,
>   Diederik
> 
> >  
> >  	dsi->pclk = devm_clk_get(dev, "pclk");
> > -	if (IS_ERR(dsi->pclk)) {
> > -		ret = PTR_ERR(dsi->pclk);
> > -		DRM_DEV_ERROR(dev, "Unable to get pclk: %d\n", ret);
> > -		return ret;
> > -	}
> > +	if (IS_ERR(dsi->pclk))
> > +		return dev_err_probe(dev, PTR_ERR(dsi->pclk), "Unable to get pclk\n");
> >  
> >  	dsi->pllref_clk = devm_clk_get(dev, "ref");
> >  	if (IS_ERR(dsi->pllref_clk)) {
> > -		if (dsi->phy) {
> > +		if (dsi->phy)
> >  			/*
> >  			 * if external phy is present, pll will be
> >  			 * generated there.
> >  			 */
> >  			dsi->pllref_clk = NULL;
> > -		} else {
> > -			ret = PTR_ERR(dsi->pllref_clk);
> > -			DRM_DEV_ERROR(dev,
> > -				      "Unable to get pll reference clock: %d\n",
> > -				      ret);
> > -			return ret;
> > -		}
> > +		else
> > +			return dev_err_probe(dev, PTR_ERR(dsi->pllref_clk),
> > +					     "Unable to get pll reference clock\n");
> >  	}
> >  
> >  	if (dsi->cdata->flags & DW_MIPI_NEEDS_PHY_CFG_CLK) {
> >  		dsi->phy_cfg_clk = devm_clk_get(dev, "phy_cfg");
> > -		if (IS_ERR(dsi->phy_cfg_clk)) {
> > -			ret = PTR_ERR(dsi->phy_cfg_clk);
> > -			DRM_DEV_ERROR(dev,
> > -				      "Unable to get phy_cfg_clk: %d\n", ret);
> > -			return ret;
> > -		}
> > +		if (IS_ERR(dsi->phy_cfg_clk))
> > +			return dev_err_probe(dev, PTR_ERR(dsi->phy_cfg_clk),
> > +					     "Unable to get phy_cfg_clk\n");
> >  	}
> >  
> >  	if (dsi->cdata->flags & DW_MIPI_NEEDS_GRF_CLK) {
> >  		dsi->grf_clk = devm_clk_get(dev, "grf");
> > -		if (IS_ERR(dsi->grf_clk)) {
> > -			ret = PTR_ERR(dsi->grf_clk);
> > -			DRM_DEV_ERROR(dev, "Unable to get grf_clk: %d\n", ret);
> > -			return ret;
> > -		}
> > +		if (IS_ERR(dsi->grf_clk))
> > +			return dev_err_probe(dev, PTR_ERR(dsi->grf_clk), "Unable to get grf_clk\n");
> >  	}
> >  
> >  	dsi->grf_regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
> > -	if (IS_ERR(dsi->grf_regmap)) {
> > -		DRM_DEV_ERROR(dev, "Unable to get rockchip,grf\n");
> > -		return PTR_ERR(dsi->grf_regmap);
> > -	}
> > +	if (IS_ERR(dsi->grf_regmap))
> > +		return dev_err_probe(dev, PTR_ERR(dsi->grf_regmap), "Unable to get rockchip,grf\n");
> >  
> >  	dsi->dev = dev;
> >  	dsi->pdata.base = dsi->base;
> > ...
> 
>
Diederik de Haas Nov. 8, 2024, 4:37 p.m. UTC | #3 
On Fri Nov 8, 2024 at 5:31 PM CET, Heiko Stübner wrote:
> Am Freitag, 8. November 2024, 16:21:24 CET schrieb Diederik de Haas:
> > On Fri Nov 8, 2024 at 3:44 PM CET, Heiko Stuebner wrote:
> > > From: Heiko Stuebner <heiko.stuebner@cherry.de>
> > >
> > > DRM_DEV_ERROR is deprecated and using dev_err_probe saves quite a number
> > > of lines too, so convert the error prints for the dsi-driver.
> > >
> > > Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
> > 
> > Should this have a Fixes tag?
> > Because in the PineTab2 case it reported an error, which was actually
> > just a deferred probe.
>
> A deferred-probe is an error ;-)   -517 in fact  ... just that convention
> nowadays is to not actively report on it but "fail" silently.

Good to know, thanks :)

> So personally I don't really consider it a fix, but more a style thing.
> I guess I'll let others chime in for that.

Then I agree that it should not have a Fixes tag.

Cheers,
  Diederik
diff mbox series

Patch

diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
index 58a44af0e9ad..3224ab749352 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
@@ -1356,17 +1356,15 @@  static int dw_mipi_dsi_rockchip_probe(struct platform_device *pdev)
 	struct resource *res;
 	const struct rockchip_dw_dsi_chip_data *cdata =
 				of_device_get_match_data(dev);
-	int ret, i;
+	int i;
 
 	dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
 	if (!dsi)
 		return -ENOMEM;
 
 	dsi->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
-	if (IS_ERR(dsi->base)) {
-		DRM_DEV_ERROR(dev, "Unable to get dsi registers\n");
-		return PTR_ERR(dsi->base);
-	}
+	if (IS_ERR(dsi->base))
+		return dev_err_probe(dev, PTR_ERR(dsi->base), "Unable to get dsi registers\n");
 
 	i = 0;
 	while (cdata[i].reg) {
@@ -1378,67 +1376,47 @@  static int dw_mipi_dsi_rockchip_probe(struct platform_device *pdev)
 		i++;
 	}
 
-	if (!dsi->cdata) {
-		DRM_DEV_ERROR(dev, "no dsi-config for %s node\n", np->name);
-		return -EINVAL;
-	}
+	if (!dsi->cdata)
+		return dev_err_probe(dev, -EINVAL, "No dsi-config for %s node\n", np->name);
 
 	/* try to get a possible external dphy */
 	dsi->phy = devm_phy_optional_get(dev, "dphy");
-	if (IS_ERR(dsi->phy)) {
-		ret = PTR_ERR(dsi->phy);
-		DRM_DEV_ERROR(dev, "failed to get mipi dphy: %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(dsi->phy))
+		return dev_err_probe(dev, PTR_ERR(dsi->phy), "Failed to get mipi dphy\n");
 
 	dsi->pclk = devm_clk_get(dev, "pclk");
-	if (IS_ERR(dsi->pclk)) {
-		ret = PTR_ERR(dsi->pclk);
-		DRM_DEV_ERROR(dev, "Unable to get pclk: %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(dsi->pclk))
+		return dev_err_probe(dev, PTR_ERR(dsi->pclk), "Unable to get pclk\n");
 
 	dsi->pllref_clk = devm_clk_get(dev, "ref");
 	if (IS_ERR(dsi->pllref_clk)) {
-		if (dsi->phy) {
+		if (dsi->phy)
 			/*
 			 * if external phy is present, pll will be
 			 * generated there.
 			 */
 			dsi->pllref_clk = NULL;
-		} else {
-			ret = PTR_ERR(dsi->pllref_clk);
-			DRM_DEV_ERROR(dev,
-				      "Unable to get pll reference clock: %d\n",
-				      ret);
-			return ret;
-		}
+		else
+			return dev_err_probe(dev, PTR_ERR(dsi->pllref_clk),
+					     "Unable to get pll reference clock\n");
 	}
 
 	if (dsi->cdata->flags & DW_MIPI_NEEDS_PHY_CFG_CLK) {
 		dsi->phy_cfg_clk = devm_clk_get(dev, "phy_cfg");
-		if (IS_ERR(dsi->phy_cfg_clk)) {
-			ret = PTR_ERR(dsi->phy_cfg_clk);
-			DRM_DEV_ERROR(dev,
-				      "Unable to get phy_cfg_clk: %d\n", ret);
-			return ret;
-		}
+		if (IS_ERR(dsi->phy_cfg_clk))
+			return dev_err_probe(dev, PTR_ERR(dsi->phy_cfg_clk),
+					     "Unable to get phy_cfg_clk\n");
 	}
 
 	if (dsi->cdata->flags & DW_MIPI_NEEDS_GRF_CLK) {
 		dsi->grf_clk = devm_clk_get(dev, "grf");
-		if (IS_ERR(dsi->grf_clk)) {
-			ret = PTR_ERR(dsi->grf_clk);
-			DRM_DEV_ERROR(dev, "Unable to get grf_clk: %d\n", ret);
-			return ret;
-		}
+		if (IS_ERR(dsi->grf_clk))
+			return dev_err_probe(dev, PTR_ERR(dsi->grf_clk), "Unable to get grf_clk\n");
 	}
 
 	dsi->grf_regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
-	if (IS_ERR(dsi->grf_regmap)) {
-		DRM_DEV_ERROR(dev, "Unable to get rockchip,grf\n");
-		return PTR_ERR(dsi->grf_regmap);
-	}
+	if (IS_ERR(dsi->grf_regmap))
+		return dev_err_probe(dev, PTR_ERR(dsi->grf_regmap), "Unable to get rockchip,grf\n");
 
 	dsi->dev = dev;
 	dsi->pdata.base = dsi->base;
@@ -1451,24 +1429,18 @@  static int dw_mipi_dsi_rockchip_probe(struct platform_device *pdev)
 	mutex_init(&dsi->usage_mutex);
 
 	dsi->dphy = devm_phy_create(dev, NULL, &dw_mipi_dsi_dphy_ops);
-	if (IS_ERR(dsi->dphy)) {
-		DRM_DEV_ERROR(&pdev->dev, "failed to create PHY\n");
-		return PTR_ERR(dsi->dphy);
-	}
+	if (IS_ERR(dsi->dphy))
+		return dev_err_probe(dev, PTR_ERR(dsi->dphy), "Failed to create PHY\n");
 
 	phy_set_drvdata(dsi->dphy, dsi);
 	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
 	if (IS_ERR(phy_provider))
-		return PTR_ERR(phy_provider);
+		return dev_err_probe(dev, PTR_ERR(phy_provider),
+				     "Failed to register phy-provider\n");
 
 	dsi->dmd = dw_mipi_dsi_probe(pdev, &dsi->pdata);
-	if (IS_ERR(dsi->dmd)) {
-		ret = PTR_ERR(dsi->dmd);
-		if (ret != -EPROBE_DEFER)
-			DRM_DEV_ERROR(dev,
-				      "Failed to probe dw_mipi_dsi: %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(dsi->dmd))
+		return dev_err_probe(dev, PTR_ERR(dsi->dmd), "Failed to probe dw_mipi_dsi\n");
 
 	return 0;
 }