linux-kernel - [PATCH 2/2] PM / devfreq: exynos-bus: add missing exynos_bus_disable_edev in exynos_bus_profile

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Date:   Sat, 21 Dec 2019 18:18:55 +0000
From:   Yangtao Li <tiny.windzz@...il.com>
To:     cw00.choi@...sung.com, myungjoo.ham@...sung.com,
        kyungmin.park@...sung.com, kgene@...nel.org, krzk@...nel.org,
        linux-pm@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Yangtao Li <tiny.windzz@...il.com>
Subject: [PATCH 2/2] PM / devfreq: exynos-bus: add missing exynos_bus_disable_edev in exynos_bus_profile_init

The exynos_bus_profile_init process may fail, but the devfreq event device
remains enabled. Call devfreq_event_disable_edev on the error return path.

Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
---
 drivers/devfreq/exynos-bus.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
index 7f5917d59072..5e54eaf3cfc6 100644
--- a/drivers/devfreq/exynos-bus.c
+++ b/drivers/devfreq/exynos-bus.c
@@ -335,10 +335,14 @@ static int exynos_bus_profile_init(struct exynos_bus *bus,
 	ret = exynos_bus_set_event(bus);
 	if (ret < 0) {
 		dev_err(dev, "failed to set event to devfreq-event devices\n");
-		return ret;
+		goto err_disable_edev;
 	}
 
 	return 0;
+
+err_disable_edev:
+	exynos_bus_disable_edev(bus);
+	return ret;
 }
 
 static int exynos_bus_profile_init_passive(struct exynos_bus *bus,
-- 
2.17.1