Trip points crossed not detected when no cooling device bound

[Daniel Lezcano <daniel.lezcano@linaro.org>]

Hi,

after experimenting different setup I noticed there is no longer trip 
crossed notifications sent to the userspace when there is no cooling 
device bound to a thermal zone.

git bisecting leads me to this commit:


202aa0d4bb532338cd27bcc64c60abc2987a2be7 is the first bad commit
commit 202aa0d4bb532338cd27bcc64c60abc2987a2be7
Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date:   Tue Apr 30 17:45:55 2024 +0200

     thermal: core: Do not call handle_thermal_trip() if zone 
temperature is invalid

     Make __thermal_zone_device_update() bail out if update_temperature()
     fails to update the zone temperature because __thermal_zone_get_temp()
     has returned an error and the current zone temperature is
     THERMAL_TEMP_INVALID (user space receiving netlink thermal messages,
     thermal debug code and thermal governors may get confused otherwise).

     Fixes: 9ad18043fb35 ("thermal: core: Send trip crossing 
notifications at init time if needed")
     Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
     Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
     Tested-by: Lukasz Luba <lukasz.luba@arm.com>

  drivers/thermal/thermal_core.c | 3 +++
  1 file changed, 3 insertions(+)

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