Merge tag 'tegra-for-4.4-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra...

[firefly-linux-kernel-4.4.55.git] / drivers / clk / tegra / clk-dfll.c

diff --git a/drivers/clk/tegra/clk-dfll.c b/drivers/clk/tegra/clk-dfll.c
index c56a5c7354847de37d17e0e9bd0aa1b2a9fe25da..86a307b17eb0a922acd2bac5ea16c6de16f5756e 100644 (file)
--- a/drivers/clk/tegra/clk-dfll.c
+++ b/drivers/clk/tegra/clk-dfll.c
@@ -632,11 +632,17 @@ 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;