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authorKrzysztof Kozlowski <k.kozlowski@samsung.com>2016-03-14 09:07:15 +0900
committerHerbert Xu <herbert@gondor.apana.org.au>2016-04-05 20:35:43 +0800
commit27d80fa8bccf8d28bef4f89709638efc624fef9a (patch)
treee98cab997d441dd586c3f97447a0fe791ecf6666 /drivers/char/hw_random
parent48a61e1e2af8020f11a2b8f8dc878144477623c6 (diff)
downloadlinux-27d80fa8bccf8d28bef4f89709638efc624fef9a.tar.bz2
hwrng: exynos - Disable runtime PM on driver unbind
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@samsung.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/char/hw_random')
-rw-r--r--drivers/char/hw_random/exynos-rng.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/char/hw_random/exynos-rng.c b/drivers/char/hw_random/exynos-rng.c
index 71b45b153cf2..ed78f25e4ec6 100644
--- a/drivers/char/hw_random/exynos-rng.c
+++ b/drivers/char/hw_random/exynos-rng.c
@@ -156,6 +156,14 @@ static int exynos_rng_probe(struct platform_device *pdev)
return ret;
}
+static int exynos_rng_remove(struct platform_device *pdev)
+{
+ pm_runtime_dont_use_autosuspend(&pdev->dev);
+ 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);
@@ -213,6 +221,7 @@ 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);