From af0d4442dd6813de6e77309063beb064fa8e89ae Mon Sep 17 00:00:00 2001
From: Lionel Debieve <lionel.debieve@st.com>
Date: Mon, 1 Apr 2019 12:30:45 +0200
Subject: [PATCH] hwrng: stm32 - fix unbalanced pm_runtime_enable
Git-commit: af0d4442dd6813de6e77309063beb064fa8e89ae
Patch-mainline: v5.2-rc1
References: bsc#1051510
No remove function implemented yet in the driver.
Without remove function, the pm_runtime implementation
complains when removing and probing again the driver.
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/char/hw_random/stm32-rng.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/char/hw_random/stm32-rng.c b/drivers/char/hw_random/stm32-rng.c
index 042860d97b15..37b338a76ba4 100644
--- a/drivers/char/hw_random/stm32-rng.c
+++ b/drivers/char/hw_random/stm32-rng.c
@@ -169,6 +169,13 @@ static int stm32_rng_probe(struct platform_device *ofdev)
return devm_hwrng_register(dev, &priv->rng);
}
+static int stm32_rng_remove(struct platform_device *ofdev)
+{
+ pm_runtime_disable(&ofdev->dev);
+
+ return 0;
+}
+
#ifdef CONFIG_PM
static int stm32_rng_runtime_suspend(struct device *dev)
{
@@ -210,6 +217,7 @@ static struct platform_driver stm32_rng_driver = {
.of_match_table = stm32_rng_match,
},
.probe = stm32_rng_probe,
+ .remove = stm32_rng_remove,
};
module_platform_driver(stm32_rng_driver);
--
2.16.4