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Date: Tue, 21 Aug 2012 15:35:32 +0530
From: Sachin Kamat <sachin.kamat@...aro.org>
To: linux-kernel@...r.kernel.org
Cc: myungjoo.ham@...sung.com, sachin.kamat@...aro.org,
patches@...aro.org
Subject: [PATCH] PM/devfreq: Use devm_* functions in exynos4_bus.c
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@...aro.org>
---
drivers/devfreq/exynos4_bus.c | 41 +++++++++++------------------------------
1 files changed, 11 insertions(+), 30 deletions(-)
diff --git a/drivers/devfreq/exynos4_bus.c b/drivers/devfreq/exynos4_bus.c
index 88ddc77..6814531 100644
--- a/drivers/devfreq/exynos4_bus.c
+++ b/drivers/devfreq/exynos4_bus.c
@@ -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;
}
--
1.7.4.1
--
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