dev_pm_opp_get_opp_count() must be called with RCU lock held.
Signed-off-by: Dmitry Torokhov <[email protected]>
---
Not tested at all...
drivers/cpufreq/imx6q-cpufreq.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c
index 380a90d..851d4fd 100644
--- a/drivers/cpufreq/imx6q-cpufreq.c
+++ b/drivers/cpufreq/imx6q-cpufreq.c
@@ -200,7 +200,9 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
* Just, incase the platform did not supply the OPP
* table, it will try to get it.
*/
+ rcu_read_lock();
num = dev_pm_opp_get_opp_count(cpu_dev);
+ rcu_read_unlock();
if (num < 0) {
ret = of_init_opp_table(cpu_dev);
if (ret < 0) {
@@ -211,7 +213,9 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
/* Because we have added the OPPs here, we must free them */
free_opp = true;
+ rcu_read_lock();
num = dev_pm_opp_get_opp_count(cpu_dev);
+ rcu_read_unlock();
if (num < 0) {
ret = num;
dev_err(cpu_dev, "no OPP table is found: %d\n", ret);
--
2.2.0.rc0.207.ga3a616c
--
Dmitry
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