linux-kernel - [PATCH v2 3/3] thermal: gov_power_allocator: Suppress sustainable_power warning without trip

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Message-Id: <20240403-gpa-no-cooling-devs-v2-3-79bdd8439449@trvn.ru>
Date: Wed, 03 Apr 2024 16:31:42 +0500
From: Nikita Travkin via B4 Relay <devnull+nikita.trvn.ru@...nel.org>
To: Lukasz Luba <lukasz.luba@....com>, 
 "Rafael J. Wysocki" <rafael@...nel.org>, 
 Daniel Lezcano <daniel.lezcano@...aro.org>, Zhang Rui <rui.zhang@...el.com>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>, 
 linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Nikita Travkin <nikitos.tr@...il.com>, Nikita Travkin <nikita@...n.ru>
Subject: [PATCH v2 3/3] thermal: gov_power_allocator: Suppress
 sustainable_power warning without trip_points

From: Nikita Travkin <nikita@...n.ru>

IPA warns if the thermal zone it was attached to doesn't define
sustainable_power value. In some cases though IPA may be bound to an
"empty" TZ, in which case the lack of sustainable_power doesn't matter.

Suppress the warning in case when IPA is bound to an empty TZ to make it
easier to see the warnings that actually matter.

Signed-off-by: Nikita Travkin <nikita@...n.ru>
---

I've decided to add this along to supress those warnings for some TZ on
sc7180. Feel free to drop this patch if you think the warning should
always appear.
---
 drivers/thermal/gov_power_allocator.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/gov_power_allocator.c b/drivers/thermal/gov_power_allocator.c
index e25e48d76aa7..05a40f6b5928 100644
--- a/drivers/thermal/gov_power_allocator.c
+++ b/drivers/thermal/gov_power_allocator.c
@@ -704,7 +704,7 @@ static int power_allocator_bind(struct thermal_zone_device *tz)
 		params->allocated_tzp = true;
 	}

-	if (!tz->tzp->sustainable_power)
+	if (!tz->tzp->sustainable_power && params->trip_max)
 		dev_warn(&tz->device, "power_allocator: sustainable_power will be estimated\n");
 	else
 		params->sustainable_power = tz->tzp->sustainable_power;

-- 
2.44.0