[PATCH v5 15/36] PM / devfreq: tegra30: Add error messages to tegra_devfreq_target()

Dmitry Osipenko
2020-08-14T00:07:42Z

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.

Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
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 6c2f56b34535..a0d6f628aaa4 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;

--
2.27.0