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authorAndrzej Pietrasiewicz <andrzej.p@collabora.com>2020-06-29 15:29:23 +0300
committerDaniel Lezcano <daniel.lezcano@linaro.org>2020-06-29 21:26:38 +0300
commitb56bdff78e0b65fd2b2ed8eba4c645a7f71ba652 (patch)
tree1022affd6100a011a740978ca0b52d018044e692 /drivers/thermal/thermal_core.c
parentbbcf90c0646ac797700269fa6645a6a46466c79f (diff)
downloadlinux-b56bdff78e0b65fd2b2ed8eba4c645a7f71ba652.tar.xz
thermal: core: Stop polling DISABLED thermal devices
Polling DISABLED devices is not desired, as all such "disabled" devices are meant to be handled by userspace. This patch introduces and uses should_stop_polling() to decide whether the device should be polled or not. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20200629122925.21729-10-andrzej.p@collabora.com
Diffstat (limited to 'drivers/thermal/thermal_core.c')
-rw-r--r--drivers/thermal/thermal_core.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 52d136780577..e613f5c07bad 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -301,13 +301,22 @@ static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
cancel_delayed_work(&tz->poll_queue);
}
+static inline bool should_stop_polling(struct thermal_zone_device *tz)
+{
+ return !thermal_zone_device_is_enabled(tz);
+}
+
static void monitor_thermal_zone(struct thermal_zone_device *tz)
{
+ bool stop;
+
+ stop = should_stop_polling(tz);
+
mutex_lock(&tz->lock);
- if (tz->passive)
+ if (!stop && tz->passive)
thermal_zone_device_set_polling(tz, tz->passive_delay);
- else if (tz->polling_delay)
+ else if (!stop && tz->polling_delay)
thermal_zone_device_set_polling(tz, tz->polling_delay);
else
thermal_zone_device_set_polling(tz, 0);
@@ -517,6 +526,9 @@ void thermal_zone_device_update(struct thermal_zone_device *tz,
{
int count;
+ if (should_stop_polling(tz))
+ return;
+
if (atomic_read(&in_suspend))
return;