linux-kernel - [PATCH 6/6] thermal: disable polling if passive_delay and polling

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Message-Id: <1251303445-25317-7-git-send-email-elendil@planet.nl>
Date:	Wed, 26 Aug 2009 18:17:25 +0200
From:	Frans Pop <elendil@...net.nl>
To:	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Frans Pop <elendil@...net.nl>, Matthew Garrett <mjg@...hat.com>,
	Zhang Rui <rui.zhang@...el.com>
Subject: [PATCH 6/6] thermal: disable polling if passive_delay and polling_delay are both unset

Otherwise polling will continue for the thermal zone even when
it is no longer needed, for example because forced passive cooling
was disabled.

Signed-off-by: Frans Pop <elendil@...net.nl>
Cc: Matthew Garrett <mjg@...hat.com>
Cc: Zhang Rui <rui.zhang@...el.com>

diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
index ceda0f1..a59685b 100644
--- a/drivers/thermal/thermal_sys.c
+++ b/drivers/thermal/thermal_sys.c
@@ -1012,6 +1012,8 @@ void thermal_zone_device_update(struct thermal_zone_device *tz)
 		thermal_zone_device_set_polling(tz, tz->passive_delay);
 	else if (tz->polling_delay)
 		thermal_zone_device_set_polling(tz, tz->polling_delay);
+	else
+		thermal_zone_device_set_polling(tz, 0);
 	mutex_unlock(&tz->lock);
 }
 EXPORT_SYMBOL(thermal_zone_device_update);
--
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