It's useful to now when something goes wrong instead of failing silently, so let's add error messages to tegra_devfreq_target() to prevent situation where it fails silently.
Signed-off-by: Dmitry Osipenko digetx@gmail.com --- drivers/devfreq/tegra30-devfreq.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c index 13f93c6038ab..a03fb16c5c4c 100644 --- a/drivers/devfreq/tegra30-devfreq.c +++ b/drivers/devfreq/tegra30-devfreq.c @@ -641,12 +641,16 @@ static int tegra_devfreq_target(struct device *dev, unsigned long *freq, dev_pm_opp_put(opp);
err = clk_set_min_rate(tegra->emc_clock, rate * KHZ); - if (err) + if (err) { + dev_err(dev, "Failed to set min rate: %d\n", err); return err; + }
err = clk_set_rate(tegra->emc_clock, 0); - if (err) + if (err) { + dev_err(dev, "Failed to set rate: %d\n", err); goto restore_min_rate; + }
return 0;