thermal: gov_power_allocator: Allow binding without cooling devices

BugLink: https://bugs.launchpad.net/bugs/2065400

[ Upstream commit 1057c4c36ef8b236a2e28edef301da0801338c5f ]

IPA was recently refactored to split out memory allocation into a
separate funciton. That funciton was made to return -EINVAL if there is
zero power_actors and thus no memory to allocate. This causes IPA to
fail probing when the thermal zone has no attached cooling devices.

Since cooling devices can attach after the thermal zone is created and
the governer is attached to it, failing probe due to the lack of cooling
devices is incorrect.

Change the allocate_actors_buffer() to return success when there is no
cooling devices present.

Fixes: 912e97c67c ("thermal: gov_power_allocator: Move memory allocation out of throttle()")
Signed-off-by: Nikita Travkin <nikita@trvn.ru>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>

This commit is contained in:

Nikita Travkin

2024-04-03 16:31:40 +05:00

committed by

Stefan Bader

parent 0ba26fd843

commit e9cc922101

1 changed files with 1 additions and 1 deletions

									
										drivers/thermal/gov_power_allocator.c
									
		+1
		-1
	
												View File
												
				@@ -606,7 +606,7 @@ static int allocate_actors_buffer(struct power_allocator_params *params,

					/* There might be no cooling devices yet. */

					if (!num_actors) {

						ret = -EINVAL;

						ret = 0;

						goto clean_state;

					}