linux-kernel - [PATCH v2 2/2] PM / devfreq: exynos-bus: Disable devfreq-event device when fails

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20191222174132.3701-2-tiny.windzz@gmail.com>
Date:   Sun, 22 Dec 2019 17:41:32 +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 v2 2/2] PM / devfreq: exynos-bus: Disable devfreq-event device when fails

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>
---
v2:
-change subject
-rename lable to err_edev
-add return value check
---
 drivers/devfreq/exynos-bus.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
index 7f5917d59072..948e9340f91c 100644
--- a/drivers/devfreq/exynos-bus.c
+++ b/drivers/devfreq/exynos-bus.c
@@ -335,10 +335,17 @@ 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_edev;
 	}
 
 	return 0;
+
+err_edev:
+	ret = exynos_bus_disable_edev(bus);
+	if (ret < 0)
+		dev_warn(dev, "failed to disable the devfreq-event devices\n");
+
+	return ret;
 }
 
 static int exynos_bus_profile_init_passive(struct exynos_bus *bus,
-- 
2.17.1