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Revert "PM / devfreq: Modify the device name as devfreq(X) for sysfs"

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This reverts commit 4585fbcb53.

The name changing as devfreq(X) breaks some user space applications,
such as Android HAL from Unisoc and Hikey [1].
The device name will be changed unexpectly after every boot depending
on module init sequence. It will make trouble to setup some system
configuration like selinux for Android.

So we'd like to revert it back to old naming rule before any better
way being found.

[1] https://lkml.org/lkml/2018/5/8/1042

Cc: John Stultz <john.stultz@linaro.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org
Signed-off-by: Orson Zhai <orson.unisoc@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This commit is contained in:
Orson Zhai 2020-02-21 01:37:04 +08:00 committed by Chanwoo Choi
parent f8788d86ab
commit 66d0e797bf
1 changed files with 1 additions and 3 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/devfreq/devfreq.c
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@ -738,7 +738,6 @@ struct devfreq *devfreq_add_device(struct device *dev,
{ {
struct devfreq *devfreq; struct devfreq *devfreq;
struct devfreq_governor *governor; struct devfreq_governor *governor;
static atomic_t devfreq_no = ATOMIC_INIT(-1);
int err = 0; int err = 0;
if (!dev || !profile || !governor_name) { if (!dev || !profile || !governor_name) {
@ -800,8 +799,7 @@ struct devfreq *devfreq_add_device(struct device *dev,
devfreq->suspend_freq = dev_pm_opp_get_suspend_opp_freq(dev); devfreq->suspend_freq = dev_pm_opp_get_suspend_opp_freq(dev);
atomic_set(&devfreq->suspend_count, 0); atomic_set(&devfreq->suspend_count, 0);
dev_set_name(&devfreq->dev, "devfreq%d", dev_set_name(&devfreq->dev, "%s", dev_name(dev));
atomic_inc_return(&devfreq_no));
err = device_register(&devfreq->dev); err = device_register(&devfreq->dev);
if (err) { if (err) {
mutex_unlock(&devfreq->lock); mutex_unlock(&devfreq->lock);