From: Orson Zhai orson.unisoc@gmail.com
commit 66d0e797bf095d407479c89952d42b1d96ef0a7f upstream.
This reverts commit 4585fbcb5331fc910b7e553ad3efd0dd7b320d14.
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
--- drivers/devfreq/devfreq.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
--- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -600,7 +600,6 @@ struct devfreq *devfreq_add_device(struc { struct devfreq *devfreq; struct devfreq_governor *governor; - static atomic_t devfreq_no = ATOMIC_INIT(-1); int err = 0;
if (!dev || !profile || !governor_name) { @@ -661,8 +660,7 @@ struct devfreq *devfreq_add_device(struc } devfreq->max_freq = devfreq->scaling_max_freq;
- dev_set_name(&devfreq->dev, "devfreq%d", - atomic_inc_return(&devfreq_no)); + dev_set_name(&devfreq->dev, "%s", dev_name(dev)); err = device_register(&devfreq->dev); if (err) { mutex_unlock(&devfreq->lock);