thermal: imx: handle error path in one place to save duplicated code

During probe phase, the error path can be handled in one place and
use goto method to save many duplicated code.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
index 6cfa2a82209e4957acc9ce7b59b9edd5d0b3dd19..15661549eb67a79d2974e0d1b0166422acd3ee5e 100644 (file)
--- a/drivers/thermal/imx_thermal.c
+++ b/drivers/thermal/imx_thermal.c
@@ -762,9 +762,7 @@ static int imx_thermal_probe(struct platform_device *pdev)
                if (ret != -EPROBE_DEFER)
                        dev_err(&pdev->dev,
                                "failed to get thermal clk: %d\n", ret);
-               cpufreq_cooling_unregister(data->cdev);
-               cpufreq_cpu_put(data->policy);
-               return ret;
+               goto cpufreq_put;
        }
 
        /*
@@ -777,9 +775,7 @@ static int imx_thermal_probe(struct platform_device *pdev)
        ret = clk_prepare_enable(data->thermal_clk);
        if (ret) {
                dev_err(&pdev->dev, "failed to enable thermal clk: %d\n", ret);
-               cpufreq_cooling_unregister(data->cdev);
-               cpufreq_cpu_put(data->policy);
-               return ret;
+               goto cpufreq_put;
        }
 
        data->tz = thermal_zone_device_register("imx_thermal_zone",
@@ -792,10 +788,7 @@ static int imx_thermal_probe(struct platform_device *pdev)
                ret = PTR_ERR(data->tz);
                dev_err(&pdev->dev,
                        "failed to register thermal zone device %d\n", ret);
-               clk_disable_unprepare(data->thermal_clk);
-               cpufreq_cooling_unregister(data->cdev);
-               cpufreq_cpu_put(data->policy);
-               return ret;
+               goto clk_disable;
        }
 
        dev_info(&pdev->dev, "%s CPU temperature grade - max:%dC"
@@ -827,14 +820,20 @@ static int imx_thermal_probe(struct platform_device *pdev)
                        0, "imx_thermal", data);
        if (ret < 0) {
                dev_err(&pdev->dev, "failed to request alarm irq: %d\n", ret);
-               clk_disable_unprepare(data->thermal_clk);
-               thermal_zone_device_unregister(data->tz);
-               cpufreq_cooling_unregister(data->cdev);
-               cpufreq_cpu_put(data->policy);
-               return ret;
+               goto thermal_zone_unregister;
        }
 
        return 0;
+
+thermal_zone_unregister:
+       thermal_zone_device_unregister(data->tz);
+clk_disable:
+       clk_disable_unprepare(data->thermal_clk);
+cpufreq_put:
+       cpufreq_cooling_unregister(data->cdev);
+       cpufreq_cpu_put(data->policy);
+
+       return ret;
 }
 
 static int imx_thermal_remove(struct platform_device *pdev)