Messages in this thread Patch in this message | | | From | Chen Yu <> | Subject | [PATCH 3/3] Thermal: do thermal zone update after a cooling device registered | Date | Sun, 27 Sep 2015 13:48:44 +0800 |
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From: Zhang Rui <rui.zhang@intel.com>
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.
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> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Chen Yu <yu.c.chen@intel.com> --- drivers/thermal/thermal_core.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index c3bdb48..09c78a4 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -1450,6 +1450,7 @@ __thermal_cooling_device_register(struct device_node *np, const struct thermal_cooling_device_ops *ops) { struct thermal_cooling_device *cdev; + struct thermal_instance *pos, *next; int result; if (type && strlen(type) >= THERMAL_NAME_LENGTH) @@ -1494,6 +1495,15 @@ __thermal_cooling_device_register(struct device_node *np, /* Update binding information for 'this' new cdev */ bind_cdev(cdev); + list_for_each_entry_safe(pos, next, &cdev->thermal_instances, cdev_node) { + if (next->cdev_node.next == &cdev->thermal_instances) { + thermal_zone_device_update(next->tz); + break; + } + if (pos->tz != next->tz) + thermal_zone_device_update(pos->tz); + } + return cdev; } -- 1.8.4.2
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