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

Commit Message

Dmitry Osipenko Aug. 14, 2020, 12:06 a.m. UTC

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 <[e-mail]>
Signed-off-by: Dmitry Osipenko <[e-mail]>
---
 drivers/devfreq/tegra30-devfreq.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

Patch

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;