- opp = devfreq_recommended_opp(dev, freq, flags);
- if (IS_ERR(opp))
- return PTR_ERR(opp);
-
- target_rate = dev_pm_opp_get_freq(opp);
- target_volt = dev_pm_opp_get_voltage(opp);
- dev_pm_opp_put(opp);
-
- if (old_clk_rate == target_rate)
- return 0;
-
- /*
- * If frequency scaling from low to high, adjust voltage first.
- * If frequency scaling from high to low, adjust frequency first.
- */
- if (old_clk_rate < target_rate) {
- err = regulator_set_voltage(pfdev->regulator, target_volt,
- target_volt);
- if (err) {
- dev_err(dev, "Cannot set voltage %lu uV\n",
- target_volt);
- return err;
- }
- }
-
- err = clk_set_rate(pfdev->clock, target_rate);
- if (err) {
- dev_err(dev, "Cannot set frequency %lu (%d)\n", target_rate,
- err);
- regulator_set_voltage(pfdev->regulator, pfdev->devfreq.cur_volt,
- pfdev->devfreq.cur_volt);