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path: root/drivers/cpuidle/dt_idle_states.c
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Diffstat (limited to 'drivers/cpuidle/dt_idle_states.c')
-rw-r--r--drivers/cpuidle/dt_idle_states.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/cpuidle/dt_idle_states.c b/drivers/cpuidle/dt_idle_states.c
index 52f4d11..a5c111b 100644
--- a/drivers/cpuidle/dt_idle_states.c
+++ b/drivers/cpuidle/dt_idle_states.c
@@ -27,6 +27,7 @@ static int init_state_node(struct cpuidle_state *idle_state,
{
int err;
const struct of_device_id *match_id;
+ const char *desc;
match_id = of_match_node(matches, state_node);
if (!match_id)
@@ -73,7 +74,11 @@ static int init_state_node(struct cpuidle_state *idle_state,
return -EINVAL;
}
- idle_state->flags = CPUIDLE_FLAG_TIME_VALID;
+ err = of_property_read_string(state_node, "idle-state-name", &desc);
+ if (err)
+ desc = state_node->name;
+
+ idle_state->flags = 0;
if (of_property_read_bool(state_node, "local-timer-stop"))
idle_state->flags |= CPUIDLE_FLAG_TIMER_STOP;
/*
@@ -82,7 +87,7 @@ static int init_state_node(struct cpuidle_state *idle_state,
* and desc become string pointers
*/
strncpy(idle_state->name, state_node->name, CPUIDLE_NAME_LEN - 1);
- strncpy(idle_state->desc, state_node->name, CPUIDLE_DESC_LEN - 1);
+ strncpy(idle_state->desc, desc, CPUIDLE_DESC_LEN - 1);
return 0;
}
@@ -169,6 +174,9 @@ int dt_init_idle_driver(struct cpuidle_driver *drv,
if (!state_node)
break;
+ if (!of_device_is_available(state_node))
+ continue;
+
if (!idle_state_valid(state_node, i, cpumask)) {
pr_warn("%s idle state not valid, bailing out\n",
state_node->full_name);