[PATCH 04/12] thermal: qoriq: Don't pass platform_device to qoriq_tmu_calibration()

From: Andrey Smirnov
Date: Mon Feb 18 2019 - 14:12:54 EST


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@xxxxxxxxx>
Cc: Chris Healy <cphealy@xxxxxxxxx>
Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Cc: Zhang Rui <rui.zhang@xxxxxxxxx>
Cc: Eduardo Valentin <edubezval@xxxxxxxxx>
Cc: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Cc: linux-imx@xxxxxxx
Cc: linux-pm@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
drivers/thermal/qoriq_thermal.c | 25 ++++++++++---------------
1 file changed, 10 insertions(+), 15 deletions(-)

diff --git a/drivers/thermal/qoriq_thermal.c b/drivers/thermal/qoriq_thermal.c
index c24629b1b8c2..9bae001e8264 100644
--- a/drivers/thermal/qoriq_thermal.c
+++ b/drivers/thermal/qoriq_thermal.c
@@ -131,16 +131,16 @@ static int qoriq_tmu_get_sensor_id(void)
return id;
}

-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;
}

@@ -152,7 +152,7 @@ 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;
}

@@ -195,27 +195,23 @@ 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->sensor_id = qoriq_tmu_get_sensor_id();
if (data->sensor_id < 0) {
dev_err(dev, "Failed to get sensor id\n");
- ret = -ENODEV;
- goto err_iomap;
+ return -ENODEV;
}

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;

@@ -229,6 +225,8 @@ static int qoriq_tmu_probe(struct platform_device *pdev)
goto err_tmu;
}

+ platform_set_drvdata(pdev, data);
+
/* Enable monitoring */
site = 0x1 << (15 - data->sensor_id);
tmu_write(data, site | TMR_ME | TMR_ALPF, &data->regs->tmr);
@@ -238,9 +236,6 @@ static int qoriq_tmu_probe(struct platform_device *pdev)
err_tmu:
iounmap(data->regs);

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

--
2.20.1