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PM / devfreq: Use devm_* functions in exynos4_bus.c

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devm_* functions are device managed functions and make cleanup code
simpler and smaller.
devm_kzalloc and devm_regulator_get functions are used.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
[renamed the patch title by MyungJoo Ham]
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
This commit is contained in:
Sachin Kamat 2012-08-21 15:35:32 +05:30 committed by MyungJoo Ham
parent 1a1357ea17
commit d7895052d9
1 changed files with 11 additions and 30 deletions
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41
drivers/devfreq/exynos4_bus.c
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@ -987,7 +987,7 @@ static __devinit int exynos4_busfreq_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
int err = 0;
data = kzalloc(sizeof(struct busfreq_data), GFP_KERNEL);
data = devm_kzalloc(&pdev->dev, sizeof(struct busfreq_data), GFP_KERNEL);
if (data == NULL) {
dev_err(dev, "Cannot allocate memory.\n");
return -ENOMEM;
@ -1012,22 +1012,18 @@ static __devinit int exynos4_busfreq_probe(struct platform_device *pdev)
err = -EINVAL;
}
if (err)
goto err_regulator;
return err;
data->vdd_int = regulator_get(dev, "vdd_int");
data->vdd_int = devm_regulator_get(dev, "vdd_int");
if (IS_ERR(data->vdd_int)) {
dev_err(dev, "Cannot get the regulator \"vdd_int\"\n");
err = PTR_ERR(data->vdd_int);
goto err_regulator;
return PTR_ERR(data->vdd_int);
}
if (data->type == TYPE_BUSF_EXYNOS4x12) {
data->vdd_mif = regulator_get(dev, "vdd_mif");
data->vdd_mif = devm_regulator_get(dev, "vdd_mif");
if (IS_ERR(data->vdd_mif)) {
dev_err(dev, "Cannot get the regulator \"vdd_mif\"\n");
err = PTR_ERR(data->vdd_mif);
regulator_put(data->vdd_int);
goto err_regulator;
return PTR_ERR(data->vdd_mif);
}
}
@ -1035,8 +1031,7 @@ static __devinit int exynos4_busfreq_probe(struct platform_device *pdev)
if (IS_ERR(opp)) {
dev_err(dev, "Invalid initial frequency %lu kHz.\n",
exynos4_devfreq_profile.initial_freq);
err = PTR_ERR(opp);
goto err_opp_add;
return PTR_ERR(opp);
}
data->curr_opp = opp;
@ -1046,29 +1041,19 @@ static __devinit int exynos4_busfreq_probe(struct platform_device *pdev)
data->devfreq = devfreq_add_device(dev, &exynos4_devfreq_profile,
&devfreq_simple_ondemand, NULL);
if (IS_ERR(data->devfreq)) {
err = PTR_ERR(data->devfreq);
goto err_opp_add;
}
if (IS_ERR(data->devfreq))
return PTR_ERR(data->devfreq);
devfreq_register_opp_notifier(dev, data->devfreq);
err = register_pm_notifier(&data->pm_notifier);
if (err) {
dev_err(dev, "Failed to setup pm notifier\n");
goto err_devfreq_add;
devfreq_remove_device(data->devfreq);
return err;
}
return 0;
err_devfreq_add:
devfreq_remove_device(data->devfreq);
err_opp_add:
if (data->vdd_mif)
regulator_put(data->vdd_mif);
regulator_put(data->vdd_int);
err_regulator:
kfree(data);
return err;
}
static __devexit int exynos4_busfreq_remove(struct platform_device *pdev)
@ -1077,10 +1062,6 @@ static __devexit int exynos4_busfreq_remove(struct platform_device *pdev)
unregister_pm_notifier(&data->pm_notifier);
devfreq_remove_device(data->devfreq);
regulator_put(data->vdd_int);
if (data->vdd_mif)
regulator_put(data->vdd_mif);
kfree(data);
return 0;
}