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PM / devfreq: Add new device link for sysfs

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As the device name has been changed to devfreq(X), but user should find
devfreq driver with their parent device name, so add a new link named
with parent name.

Change-Id: I5077ddecbcc8db8d59cb6f16f2be5107b391677d
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
This commit is contained in:
Finley Xiao 2019-10-16 14:46:03 +08:00 • committed by Tao Huang
commit 32948d8b86
1 changed files with 20 additions and 0 deletions
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20
drivers/devfreq/devfreq.c
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@ -27,6 +27,9 @@
#include <linux/hrtimer.h>
#include <linux/of.h>
#include "governor.h"
#ifdef CONFIG_ARCH_ROCKCHIP
#include "../base/base.h"
#endif
static struct class *devfreq_class;
@ -634,6 +637,18 @@ struct devfreq *devfreq_add_device(struct device *dev,
goto err_out;
}
#ifdef CONFIG_ARCH_ROCKCHIP
if (sysfs_create_link(&devfreq->dev.class->p->subsys.kobj,
&devfreq->dev.kobj, dev_name(dev))) {
dev_err(dev, "failed to create devfreq %s link\n",
dev_name(dev));
device_unregister(&devfreq->dev);
mutex_unlock(&devfreq->lock);
put_device(&devfreq->dev);
goto err_out;
}
#endif
devfreq->trans_table =
devm_kzalloc(&devfreq->dev,
array3_size(sizeof(unsigned int),
@ -699,6 +714,11 @@ int devfreq_remove_device(struct devfreq *devfreq)
if (!devfreq)
return -EINVAL;
#ifdef CONFIG_ARCH_ROCKCHIP
sysfs_delete_link(&devfreq->dev.class->p->subsys.kobj,
&devfreq->dev.kobj, dev_name(devfreq->dev.parent));
#endif
device_unregister(&devfreq->dev);
return 0;