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Subject[PATCH 27/31] PM / devfreq: rk3399_dmc: convert to use devm_pm_opp_* API
Date
Use devm_pm_opp_* API to simplify code. Since devres release
can guarantee the order, let's remove
devm_devfreq_unregister_opp_notifier().

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
---
drivers/devfreq/rk3399_dmc.c | 22 +++-------------------
1 file changed, 3 insertions(+), 19 deletions(-)

diff --git a/drivers/devfreq/rk3399_dmc.c b/drivers/devfreq/rk3399_dmc.c
index 2e912166a993..9b8ab8be29d1 100644
--- a/drivers/devfreq/rk3399_dmc.c
+++ b/drivers/devfreq/rk3399_dmc.c
@@ -432,7 +432,7 @@ static int rk3399_dmcfreq_probe(struct platform_device *pdev)
* We add a devfreq driver to our parent since it has a device tree node
* with operating points.
*/
- if (dev_pm_opp_of_add_table(dev)) {
+ if (devm_pm_opp_of_add_table(dev)) {
dev_err(dev, "Invalid operating-points in device tree.\n");
ret = -EINVAL;
goto err_edev;
@@ -448,7 +448,7 @@ static int rk3399_dmcfreq_probe(struct platform_device *pdev)
opp = devfreq_recommended_opp(dev, &data->rate, 0);
if (IS_ERR(opp)) {
ret = PTR_ERR(opp);
- goto err_free_opp;
+ goto err_edev;
}

data->rate = dev_pm_opp_get_freq(opp);
@@ -463,7 +463,7 @@ static int rk3399_dmcfreq_probe(struct platform_device *pdev)
&data->ondemand_data);
if (IS_ERR(data->devfreq)) {
ret = PTR_ERR(data->devfreq);
- goto err_free_opp;
+ goto err_edev;
}

devm_devfreq_register_opp_notifier(dev, data->devfreq);
@@ -473,27 +473,12 @@ static int rk3399_dmcfreq_probe(struct platform_device *pdev)

return 0;

-err_free_opp:
- dev_pm_opp_of_remove_table(&pdev->dev);
err_edev:
devfreq_event_disable_edev(data->edev);

return ret;
}

-static int rk3399_dmcfreq_remove(struct platform_device *pdev)
-{
- struct rk3399_dmcfreq *dmcfreq = dev_get_drvdata(&pdev->dev);
-
- /*
- * Before remove the opp table we need to unregister the opp notifier.
- */
- devm_devfreq_unregister_opp_notifier(dmcfreq->dev, dmcfreq->devfreq);
- dev_pm_opp_of_remove_table(dmcfreq->dev);
-
- return 0;
-}
-
static const struct of_device_id rk3399dmc_devfreq_of_match[] = {
{ .compatible = "rockchip,rk3399-dmc" },
{ },
@@ -502,7 +487,6 @@ MODULE_DEVICE_TABLE(of, rk3399dmc_devfreq_of_match);

static struct platform_driver rk3399_dmcfreq_driver = {
.probe = rk3399_dmcfreq_probe,
- .remove = rk3399_dmcfreq_remove,
.driver = {
.name = "rk3399-dmc-freq",
.pm = &rk3399_dmcfreq_pm,
--
2.25.1
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