The Exynos TMU DT binding says that the vtmu-supply is optional but the
driver uses devm_regulator_get() that creates a dummy regulator if it's
not defined in the DT. For example the following message is in the log:
10060000.tmu supply vtmu not found, using dummy regulator
Use the optional version of regulator_get() that doesn't create a dummy
regulator and instead returns a -ENODEV errno code. Since it's expected
that a regulator may not be defined and the driver will inform about it:
exynos-tmu 10060000.tmu: Regulator node (vtmu) not found
Signed-off-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>
---
drivers/thermal/samsung/exynos_tmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 6c6f59ba7423..f4f36bba7be9 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -1310,7 +1310,7 @@ static int exynos_tmu_probe(struct platform_device *pdev)
* TODO: Add regulator as an SOC feature, so that regulator enable
* is a compulsory call.
*/
- data->regulator = devm_regulator_get(&pdev->dev, "vtmu");
+ data->regulator = devm_regulator_get_optional(&pdev->dev, "vtmu");
if (!IS_ERR(data->regulator)) {
ret = regulator_enable(data->regulator);
if (ret) {
--
2.5.0
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