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

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commit 66d0e797bf095d407479c89952d42b1d96ef0a7f upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Orson Zhai 2020-02-21 01:37:04 +08:00 committed by Greg Kroah-Hartman
parent 91495e01e8
commit a8b1fa6c47
1 changed files with 1 additions and 3 deletions
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4
drivers/devfreq/devfreq.c
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@ -600,7 +600,6 @@ 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) {
@ -661,8 +660,7 @@ struct devfreq *devfreq_add_device(struct device *dev,
} }
devfreq->max_freq = devfreq->scaling_max_freq; devfreq->max_freq = devfreq->scaling_max_freq;
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);