cpufreq: dt: dev_pm_opp_of_cpumask_add_table() may return -EPROBE_DEFER

The function dev_pm_opp_of_cpumask_add_table() may return -EPROBE_DEFER,
which needs to be propagated to the caller to try probing the driver
later on.

Signed-off-by: Quanyang Wang <quanyang.wang@windriver.com>
[ Viresh: Massage changelog/subject, improve code. ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
index b1e1bdc..ece5286 100644 (file)
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -255,10 +255,15 @@ static int dt_cpufreq_early_init(struct device *dev, int cpu)
         * before updating priv->cpus. Otherwise, we will end up creating
         * duplicate OPPs for the CPUs.
         *
-        * OPPs might be populated at runtime, don't check for error here.
+        * OPPs might be populated at runtime, don't fail for error here unless
+        * it is -EPROBE_DEFER.
         */
-       if (!dev_pm_opp_of_cpumask_add_table(priv->cpus))
+       ret = dev_pm_opp_of_cpumask_add_table(priv->cpus);
+       if (!ret) {
                priv->have_static_opps = true;
+       } else if (ret == -EPROBE_DEFER) {
+               goto out;
+       }
 
        /*
         * The OPP table must be initialized, statically or dynamically, by this