thermal: Validate new state in cur_state_store()

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In cur_state_store(), the new state of the cooling device is received
from user-space and is not validated by the thermal core but the same is
left for the individual drivers to take care of. Apart from duplicating
the code it leaves possibility for introducing bugs where a driver may
not do it right.

Lets make the thermal core check the new state itself and store the max
value in the cooling device structure.

Link: https://lore.kernel.org/all/Y0ltRJRjO7AkawvE@kili/
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Viresh Kumar 2022-10-17 15:33:01 +05:30 • committed by Rafael J. Wysocki

parent 247f34f7b8

commit c408b3d1d9

4 changed files with 14 additions and 19 deletions

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include/linux/thermal.h

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