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Subject[PATCH v3 07/13] thermal: qoriq: Pass data to qoriq_tmu_calibration() directly
Date
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;
}

+ platform_set_drvdata(pdev, data);
+
return 0;

err_tmu:
iounmap(data->regs);

-err_iomap:
- platform_set_drvdata(pdev, NULL);
-
return ret;
}

--
2.20.1
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