1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/clk/tegra/clk-dfll.c b/drivers/clk/tegra/clk-dfll.c
index c2ff859ee0e8..c4e3a52e225b 100644
--- a/drivers/clk/tegra/clk-dfll.c
+++ b/drivers/clk/tegra/clk-dfll.c
@@ -682,11 +682,17 @@ static int find_lut_index_for_rate(struct tegra_dfll *td, unsigned long rate)
         struct dev_pm_opp *opp;
         int i, uv;
 
+        rcu_read_lock();
+
         opp = dev_pm_opp_find_freq_ceil(td->soc->dev, &rate);
-        if (IS_ERR(opp))
+        if (IS_ERR(opp)) {
+                rcu_read_unlock();
                 return PTR_ERR(opp);
+        }
         uv = dev_pm_opp_get_voltage(opp);
 
+        rcu_read_unlock();
+
         for (i = 0; i < td->i2c_lut_size; i++) {
                 if (regulator_list_voltage(td->vdd_reg, td->i2c_lut[i]) == uv)
                         return i;