linux-kernel - [PATCH] powercap/drivers/dtpm : Fix power limit initialization

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Message-Id: <20210318205238.21937-1-daniel.lezcano@linaro.org>
Date:   Thu, 18 Mar 2021 21:52:38 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     daniel.lezcano@...aro.org
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        linux-pm@...r.kernel.org (open list:POWER MANAGEMENT CORE),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] powercap/drivers/dtpm : Fix power limit initialization

When a DTPM node is registered its power limit must be initialized to
the power max.

Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
---
 drivers/powercap/dtpm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/powercap/dtpm.c b/drivers/powercap/dtpm.c
index a4784ac2f79b..2f028776cfa8 100644
--- a/drivers/powercap/dtpm.c
+++ b/drivers/powercap/dtpm.c
@@ -594,8 +594,10 @@ int dtpm_create(const char *name, struct dtpm *dtpm, struct dtpm *parent)
 		root = dtpm;
 	}
 
-	if (dtpm->ops && !dtpm->ops->update_power_uw(dtpm))
+	if (dtpm->ops && !dtpm->ops->update_power_uw(dtpm)) {
 		__dtpm_add_power(dtpm);
+		dtpm->power_limit = dtpm->power_max;
+	}
 
 	pr_info("Created dtpm node '%s' / %llu-%llu uW, \n",
 		dtpm->zone.name, dtpm->power_min, dtpm->power_max);
-- 
2.17.1