Driver enabled runtime PM but did not revert this on removal. Re-binding
of a device triggered warning:
exynos-rng 10830400.rng: Unbalanced pm_runtime_enable!
Fixes: b329669ea0b5 ("hwrng: exynos - Add support for Exynos random number generator")
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
---
drivers/char/hw_random/exynos-rng.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/char/hw_random/exynos-rng.c b/drivers/char/hw_random/exynos-rng.c
index 68c349bf66a0..cba1ff538c46 100644
--- a/drivers/char/hw_random/exynos-rng.c
+++ b/drivers/char/hw_random/exynos-rng.c
@@ -154,6 +154,13 @@ static int exynos_rng_probe(struct platform_device *pdev)
return ret;
}
+static int exynos_rng_remove(struct platform_device *pdev)
+{
+ pm_runtime_disable(&pdev->dev);
+
+ return 0;
+}
+
static int __maybe_unused exynos_rng_runtime_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
@@ -211,6 +218,7 @@ static struct platform_driver exynos_rng_driver = {
.of_match_table = exynos_rng_dt_match,
},
.probe = exynos_rng_probe,
+ .remove = exynos_rng_remove,
};
module_platform_driver(exynos_rng_driver);
--
2.5.0
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