PM / devfreq: event: Find the instance of devfreq-event device by using phandle
This patch use the phandle to find the instance of devfreq-event device in
Device Tree when calling the devfreq_event_get_edev_by_phandle() because there
is two type devfreq-event devices as following:
First case, exynos-ppmu.c driver provides the maximum four event of each PPMU.
So, when getting the instance of devfreq-event device, using the unique name of
struct devfreq_event_desc.
Second case, exynos-nocp.c driver provide the only one event of each NoC Probe
device. So, when getting the instance of devfreq-event device, using the
phandle of each NoC probe device.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
diff --git a/drivers/devfreq/devfreq-event.c b/drivers/devfreq/devfreq-event.c
index 38bf144..39b048e 100644
--- a/drivers/devfreq/devfreq-event.c
+++ b/drivers/devfreq/devfreq-event.c
@@ -235,6 +235,11 @@
mutex_lock(&devfreq_event_list_lock);
list_for_each_entry(edev, &devfreq_event_list, node) {
+ if (edev->dev.parent && edev->dev.parent->of_node == node)
+ goto out;
+ }
+
+ list_for_each_entry(edev, &devfreq_event_list, node) {
if (!strcmp(edev->desc->name, node->name))
goto out;
}