diff options
| author | Zhang Rui <rui.zhang@intel.com> | 2012-07-24 10:56:21 +0200 |
|---|---|---|
| committer | Zhang Rui <rui.zhang@intel.com> | 2012-09-24 08:44:37 +0200 |
| commit | f4a821ce6ed41970d0155f55067fb07009974fbe (patch) | |
| tree | 6cceeaa90060fb17985fbe7f9b5aa9466cf03d8d /include | |
| parent | Thermal: Unify the code for both active and passive cooling (diff) | |
| download | linux-f4a821ce6ed41970d0155f55067fb07009974fbe.tar.xz linux-f4a821ce6ed41970d0155f55067fb07009974fbe.zip | |
Thermal: Introduce locking for cdev.thermal_instances list.
we need to go over all the thermal_instance list of a cooling device
to decide which cooling state to put the cooling device to.
But at this time, as a cooling device may be referenced in multiple
thermal zones, we need to lock the list first in case
another thermal zone is updating this cooling device.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Eduardo Valentin <eduardo.valentin@ti.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/thermal.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 76d0fe88eb1c..91b34812cd84 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -95,6 +95,7 @@ struct thermal_cooling_device { void *devdata; const struct thermal_cooling_device_ops *ops; bool updated; /* true if the cooling device does not need update */ + struct mutex lock; /* protect thermal_instances list */ struct list_head thermal_instances; struct list_head node; }; |