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authorChanwoo Choi <cw00.choi@samsung.com>2014-05-09 11:43:10 +0400
committerMyungJoo Ham <myungjoo.ham@samsung.com>2014-05-24 17:33:45 +0400
commitc1b13d4e54d9777dc68c28503728ea63c6bfff37 (patch)
tree037e21db97e65841bc9f2ccf726e984a79875d18 /drivers
parentd5b040d0cab9cae1dc1ad61a07019062235f4878 (diff)
downloadlinux-c1b13d4e54d9777dc68c28503728ea63c6bfff37.tar.xz
PM / devfreq: exynos4: Use devm_devfreq_* function using device resource management
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@samsung.com> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/devfreq/exynos/exynos4_bus.c19
1 files changed, 4 insertions, 15 deletions
diff --git a/drivers/devfreq/exynos/exynos4_bus.c b/drivers/devfreq/exynos/exynos4_bus.c
index d257f1fcbaa9..bebb0a42b48e 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;
}