From e0c57a5c70c13317238cb19a7ded0eab4a5f7de5 Mon Sep 17 00:00:00 2001
From: Sudeep Holla <sudeep.holla@arm.com>
Date: Tue, 25 Oct 2022 13:34:32 +0100
Subject: [PATCH] PM: domains: Fix handling of unavailable/disabled idle states
Git-commit: e0c57a5c70c13317238cb19a7ded0eab4a5f7de5
Patch-mainline: v6.1-rc3
References: git-fixes
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: a3381e3a65cb ("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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/base/power/domain.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index ead135c7044c..6471b559230e 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -2952,6 +2952,10 @@ 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) {
--
2.35.3