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PM: domains: Fix handling of unavailable/disabled idle states

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[ Upstream commit e0c57a5c70c13317238cb19a7ded0eab4a5f7de5 ]

Platforms can provide the information about the availability of each
idle states via status flag. Platforms may have to disable one or more
idle states for various reasons like broken firmware or other unmet
dependencies.

Fix handling of such unavailable/disabled idle states by ignoring them
while parsing the states.

Fixes: a3381e3a65 ("PM / domains: Fix up domain-idle-states OF parsing")
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sudeep Holla 2022-10-25 13:34:32 +01:00 committed by Greg Kroah-Hartman
parent 034d7f1719
commit b254c81df2
1 changed files with 4 additions and 0 deletions
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4
drivers/base/power/domain.c
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@ -2459,6 +2459,10 @@ static int genpd_iterate_idle_states(struct device_node *dn,
np = it.node;
if (!of_match_node(idle_state_match, np))
continue;
if (!of_device_is_available(np))
continue;
if (states) {
ret = genpd_parse_state(&states[i], np);
if (ret) {