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-rw-r--r--drivers/cpufreq/cpufreq.c23
1 files changed, 14 insertions, 9 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 16d7b4a..f13a663 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1016,15 +1016,17 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif,
read_unlock_irqrestore(&cpufreq_driver_lock, flags);
#endif
- if (frozen)
- /* Restore the saved policy when doing light-weight init */
- policy = cpufreq_policy_restore(cpu);
- else
+ /*
+ * Restore the saved policy when doing light-weight init and fall back
+ * to the full init if that fails.
+ */
+ policy = frozen ? cpufreq_policy_restore(cpu) : NULL;
+ if (!policy) {
+ frozen = false;
policy = cpufreq_policy_alloc();
-
- if (!policy)
- goto nomem_out;
-
+ if (!policy)
+ goto nomem_out;
+ }
/*
* In the resume path, since we restore a saved policy, the assignment
@@ -1118,8 +1120,11 @@ err_get_freq:
if (cpufreq_driver->exit)
cpufreq_driver->exit(policy);
err_set_policy_cpu:
- if (frozen)
+ if (frozen) {
+ /* Do not leave stale fallback data behind. */
+ per_cpu(cpufreq_cpu_data_fallback, cpu) = NULL;
cpufreq_policy_put_kobj(policy);
+ }
cpufreq_policy_free(policy);
nomem_out:
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