This patch uses devm_devfreq_add_device()/devm_devfreq_register_opp_notifier()
to control automatically the resource of devfreq.
Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Cc: Kukjin Kim <kgene.kim@xxxxxxxxxxx>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Cc: Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-samsung-soc@xxxxxxxxxxxxxxx
---
drivers/devfreq/exynos/exynos4_bus.c | 19 ++++---------------
1 file changed, 4 insertions(+), 15 deletions(-)
diff --git a/drivers/devfreq/exynos/exynos4_bus.c b/drivers/devfreq/exynos/exynos4_bus.c
index d257f1f..bebb0a4 100644
--- a/drivers/devfreq/exynos/exynos4_bus.c
+++ b/drivers/devfreq/exynos/exynos4_bus.c
@@ -979,7 +979,7 @@ static int exynos4_busfreq_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, data);
- data->devfreq = devfreq_add_device(dev, &exynos4_devfreq_profile,
+ data->devfreq = devm_devfreq_add_device(dev, &exynos4_devfreq_profile,
"simple_ondemand", NULL);
if (IS_ERR(data->devfreq))
return PTR_ERR(data->devfreq);
@@ -991,27 +991,20 @@ static int exynos4_busfreq_probe(struct platform_device *pdev)
busfreq_mon_reset(ppmu_data);
/* Register opp_notifier for Exynos4 busfreq */
- err = devfreq_register_opp_notifier(dev, data->devfreq);
+ err = devm_devfreq_register_opp_notifier(dev, data->devfreq);
if (err < 0) {
dev_err(dev, "Failed to register opp notifier\n");
- goto err_notifier_opp;
+ return err;
}
/* Register pm_notifier for Exynos4 busfreq */
err = register_pm_notifier(&data->pm_notifier);
if (err) {
dev_err(dev, "Failed to setup pm notifier\n");
- goto err_notifier_pm;
+ return err;
}
return 0;
-
-err_notifier_pm:
- devfreq_unregister_opp_notifier(dev, data->devfreq);
-err_notifier_opp:
- devfreq_remove_device(data->devfreq);
-
- return err;
}
static int exynos4_busfreq_remove(struct platform_device *pdev)
@@ -1020,10 +1013,6 @@ static int exynos4_busfreq_remove(struct platform_device *pdev)
/* Unregister all of notifier chain */
unregister_pm_notifier(&data->pm_notifier);
- devfreq_unregister_opp_notifier(data->dev, data->devfreq);
-
- /* Remove devfreq instance */
- devfreq_remove_device(data->devfreq);
return 0;
}
--
1.8.0
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