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SubjectRe: [PATCH v3 07/13] thermal: qoriq: Pass data to qoriq_tmu_calibration() directly
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On 01/04/2019 06:14, 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: Zhang Rui <rui.zhang@intel.com>
> 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 | 22 +++++++++-------------
> 1 file changed, 9 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/thermal/qoriq_thermal.c b/drivers/thermal/qoriq_thermal.c
> index 24a2a57f61c9..a3ddb55740e4 100644
> --- a/drivers/thermal/qoriq_thermal.c
> +++ b/drivers/thermal/qoriq_thermal.c
> @@ -139,16 +139,16 @@ 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;
> }
>
> @@ -160,7 +160,7 @@ 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;
> }
>
> @@ -198,20 +198,17 @@ 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;
>
> @@ -222,14 +219,13 @@ static int qoriq_tmu_probe(struct platform_device *pdev)
> goto err_iomap;

s/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;
> }
>
>


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