thermal/core: Protect sysfs accesses to thermal operations with thermal zone mutex

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Protect access to thermal operations against thermal zone removal by
acquiring the thermal zone device mutex. After acquiring the mutex, check
if the thermal zone device is registered and abort the operation if not.

With this change, we can call __thermal_zone_device_update() instead of
thermal_zone_device_update() from trip_point_temp_store() and from
emul_temp_store(). Similar, we can call __thermal_zone_set_trips() instead
of thermal_zone_set_trips() from trip_point_hyst_store().

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Guenter Roeck 2022-11-10 07:24:58 -08:00 • committed by Rafael J. Wysocki

parent ea37bec51f

commit 05eeee2b51

3 changed files with 69 additions and 16 deletions

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4

drivers/thermal/thermal_core.c

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2

drivers/thermal/thermal_core.h

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81

drivers/thermal/thermal_sysfs.c

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