diff options
| author | Chen Yu <yu.c.chen@intel.com> | 2015-10-30 16:32:10 +0800 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-02-09 22:55:43 -0500 |
| commit | 914186fa0ab0d835123dd8ca00ab47027683d40d (patch) | |
| tree | 3a5915b1c0f284fa1cdfac554d1c034a953f6075 /include | |
| parent | 479ea3ba1bbce34eec93129b75a54f4304019a77 (diff) | |
Thermal: do thermal zone update after a cooling device registered
[ Upstream commit 4511f7166a2deb5f7a578cf87fd2fe1ae83527e3 ]
When a new cooling device is registered, we need to update the
thermal zone to set the new registered cooling device to a proper
state.
This fixes a problem that the system is cool, while the fan devices
are left running on full speed after boot, if fan device is registered
after thermal zone device.
Here is the history of why current patch looks like this:
https://patchwork.kernel.org/patch/7273041/
CC: <stable@vger.kernel.org> #3.18+
Reference:https://bugzilla.kernel.org/show_bug.cgi?id=92431
Tested-by: Manuel Krause <manuelkrause@netscape.net>
Tested-by: szegad <szegadlo@poczta.onet.pl>
Tested-by: prash <prash.n.rao@gmail.com>
Tested-by: amish <ammdispose-arch@yahoo.com>
Reviewed-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/thermal.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 5671a989965e..041f9b4e0074 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -191,6 +191,7 @@ struct thermal_attr { * @forced_passive: If > 0, temperature at which to switch on all ACPI * processor cooling devices. Currently only used by the * step-wise governor. + * @need_update: if equals 1, thermal_zone_device_update needs to be invoked. * @ops: operations this &thermal_zone_device supports * @tzp: thermal zone parameters * @governor: pointer to the governor for this thermal zone @@ -217,6 +218,7 @@ struct thermal_zone_device { int emul_temperature; int passive; unsigned int forced_passive; + atomic_t need_update; struct thermal_zone_device_ops *ops; const struct thermal_zone_params *tzp; struct thermal_governor *governor; |