[v4,06/12] thermal: qoriq: Pass data to qoriq_tmu_calibration() directly
diff mbox series

Message ID 20190413082748.29990-7-andrew.smirnov@gmail.com
State Superseded, archived
Delegated to: Eduardo Valentin
Headers show
Series
  • QorIQ TMU multi-sensor and HWMON support
Related show

Commit Message

Andrey Smirnov April 13, 2019, 8:27 a.m. UTC
We can simplify error cleanup code if instead of passing a "struct
platform_device *" to qoriq_tmu_calibration() and deriving a bunch of
pointers from it, we pass those pointers directly. This way we won't
be force to call platform_set_drvdata() as early in qoriq_tmu_probe()
and consequently would be able to drop the "err_iomap" error path.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Angus Ainslie (Purism) <angus@akkea.ca>
Cc: linux-imx@nxp.com
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/thermal/qoriq_thermal.c | 24 ++++++++++--------------
 1 file changed, 10 insertions(+), 14 deletions(-)

Comments

Daniel Lezcano April 16, 2019, 4:51 p.m. UTC | #1
On 13/04/2019 10:27, Andrey Smirnov wrote:
> We can simplify error cleanup code if instead of passing a "struct
> platform_device *" to qoriq_tmu_calibration() and deriving a bunch of
> pointers from it, we pass those pointers directly. This way we won't
> be force to call platform_set_drvdata() as early in qoriq_tmu_probe()
> and consequently would be able to drop the "err_iomap" error path.
> 
> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
> Cc: Chris Healy <cphealy@gmail.com>
> Cc: Lucas Stach <l.stach@pengutronix.de>
> Cc: Eduardo Valentin <edubezval@gmail.com>
> Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
> Cc: Angus Ainslie (Purism) <angus@akkea.ca>
> Cc: linux-imx@nxp.com
> Cc: linux-pm@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org

Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>


> ---
>  drivers/thermal/qoriq_thermal.c | 24 ++++++++++--------------
>  1 file changed, 10 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/thermal/qoriq_thermal.c b/drivers/thermal/qoriq_thermal.c
> index 3419505a2f0a..0b6937bbc7d0 100644
> --- a/drivers/thermal/qoriq_thermal.c
> +++ b/drivers/thermal/qoriq_thermal.c
> @@ -122,16 +122,16 @@ static int qoriq_tmu_register_tmu_zone(struct device *dev,
>  	return 0;
>  }
>  
> -static int qoriq_tmu_calibration(struct platform_device *pdev)
> +static int qoriq_tmu_calibration(struct device *dev,
> +				 struct qoriq_tmu_data *data)
>  {
>  	int i, val, len;
>  	u32 range[4];
>  	const u32 *calibration;
> -	struct device_node *np = pdev->dev.of_node;
> -	struct qoriq_tmu_data *data = platform_get_drvdata(pdev);
> +	struct device_node *np = dev->of_node;
>  
>  	if (of_property_read_u32_array(np, "fsl,tmu-range", range, 4)) {
> -		dev_err(&pdev->dev, "missing calibration range.\n");
> +		dev_err(dev, "missing calibration range.\n");
>  		return -ENODEV;
>  	}
>  
> @@ -143,7 +143,7 @@ static int qoriq_tmu_calibration(struct platform_device *pdev)
>  
>  	calibration = of_get_property(np, "fsl,tmu-calibration", &len);
>  	if (calibration == NULL || len % 8) {
> -		dev_err(&pdev->dev, "invalid calibration data.\n");
> +		dev_err(dev, "invalid calibration data.\n");
>  		return -ENODEV;
>  	}
>  
> @@ -181,20 +181,17 @@ static int qoriq_tmu_probe(struct platform_device *pdev)
>  	if (!data)
>  		return -ENOMEM;
>  
> -	platform_set_drvdata(pdev, data);
> -
>  	data->little_endian = of_property_read_bool(np, "little-endian");
>  
>  	data->regs = of_iomap(np, 0);
>  	if (!data->regs) {
>  		dev_err(dev, "Failed to get memory region\n");
> -		ret = -ENODEV;
> -		goto err_iomap;
> +		return -ENODEV;
>  	}
>  
>  	qoriq_tmu_init_device(data);	/* TMU initialization */
>  
> -	ret = qoriq_tmu_calibration(pdev);	/* TMU calibration */
> +	ret = qoriq_tmu_calibration(dev, data);	/* TMU calibration */
>  	if (ret < 0)
>  		goto err_tmu;
>  
> @@ -202,17 +199,16 @@ static int qoriq_tmu_probe(struct platform_device *pdev)
>  	if (ret < 0) {
>  		dev_err(dev, "Failed to register sensors\n");
>  		ret = -ENODEV;
> -		goto err_iomap;
> +		goto err_tmu;
>  	}
>  
> +	platform_set_drvdata(pdev, data);
> +
>  	return 0;
>  
>  err_tmu:
>  	iounmap(data->regs);
>  
> -err_iomap:
> -	platform_set_drvdata(pdev, NULL);
> -
>  	return ret;
>  }
>  
>

Patch
diff mbox series

diff --git a/drivers/thermal/qoriq_thermal.c b/drivers/thermal/qoriq_thermal.c
index 3419505a2f0a..0b6937bbc7d0 100644
--- a/drivers/thermal/qoriq_thermal.c
+++ b/drivers/thermal/qoriq_thermal.c
@@ -122,16 +122,16 @@  static int qoriq_tmu_register_tmu_zone(struct device *dev,
 	return 0;
 }
 
-static int qoriq_tmu_calibration(struct platform_device *pdev)
+static int qoriq_tmu_calibration(struct device *dev,
+				 struct qoriq_tmu_data *data)
 {
 	int i, val, len;
 	u32 range[4];
 	const u32 *calibration;
-	struct device_node *np = pdev->dev.of_node;
-	struct qoriq_tmu_data *data = platform_get_drvdata(pdev);
+	struct device_node *np = dev->of_node;
 
 	if (of_property_read_u32_array(np, "fsl,tmu-range", range, 4)) {
-		dev_err(&pdev->dev, "missing calibration range.\n");
+		dev_err(dev, "missing calibration range.\n");
 		return -ENODEV;
 	}
 
@@ -143,7 +143,7 @@  static int qoriq_tmu_calibration(struct platform_device *pdev)
 
 	calibration = of_get_property(np, "fsl,tmu-calibration", &len);
 	if (calibration == NULL || len % 8) {
-		dev_err(&pdev->dev, "invalid calibration data.\n");
+		dev_err(dev, "invalid calibration data.\n");
 		return -ENODEV;
 	}
 
@@ -181,20 +181,17 @@  static int qoriq_tmu_probe(struct platform_device *pdev)
 	if (!data)
 		return -ENOMEM;
 
-	platform_set_drvdata(pdev, data);
-
 	data->little_endian = of_property_read_bool(np, "little-endian");
 
 	data->regs = of_iomap(np, 0);
 	if (!data->regs) {
 		dev_err(dev, "Failed to get memory region\n");
-		ret = -ENODEV;
-		goto err_iomap;
+		return -ENODEV;
 	}
 
 	qoriq_tmu_init_device(data);	/* TMU initialization */
 
-	ret = qoriq_tmu_calibration(pdev);	/* TMU calibration */
+	ret = qoriq_tmu_calibration(dev, data);	/* TMU calibration */
 	if (ret < 0)
 		goto err_tmu;
 
@@ -202,17 +199,16 @@  static int qoriq_tmu_probe(struct platform_device *pdev)
 	if (ret < 0) {
 		dev_err(dev, "Failed to register sensors\n");
 		ret = -ENODEV;
-		goto err_iomap;
+		goto err_tmu;
 	}
 
+	platform_set_drvdata(pdev, data);
+
 	return 0;
 
 err_tmu:
 	iounmap(data->regs);
 
-err_iomap:
-	platform_set_drvdata(pdev, NULL);
-
 	return ret;
 }