linux-kernel - [PATCH v1 5/7] powercap/dtpm: Move the 'root' reset place

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Date:   Sun, 30 Jan 2022 22:02:07 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     daniel.lezcano@...aro.org, rjw@...ysocki.net
Cc:     heiko@...ech.de, lukasz.luba@....com, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, ulf.hansson@...aro.org,
        Daniel Lezcano <daniel.lezcano@...nel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Subject: [PATCH v1 5/7] powercap/dtpm: Move the 'root' reset place

The 'root' node is checked everytime a dtpm node is destroyed.

When we reach the end of the hierarchy destruction function, we can
unconditionnaly set the 'root' node to NULL again.

Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
---
 drivers/powercap/dtpm.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/powercap/dtpm.c b/drivers/powercap/dtpm.c
index d9d74f981118..ec931a06d90a 100644
--- a/drivers/powercap/dtpm.c
+++ b/drivers/powercap/dtpm.c
@@ -184,9 +184,6 @@ int dtpm_release_zone(struct powercap_zone *pcz)
 	else
 		kfree(dtpm);
 
-	if (root == dtpm)
-		root = NULL;
-
 	return 0;
 }
 
@@ -656,6 +653,8 @@ void dtpm_destroy_hierarchy(void)
 
 	pct = NULL;
 
+	root = NULL;
+
 out_unlock:
 	mutex_unlock(&dtpm_lock);
 }
-- 
2.25.1