linux-kernel - [PATCH] media: ov5640: use pm_runtime_force

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-next>] [day] [month] [year] [list]

Message-Id: <20230818173416.2467832-1-andrej.skvortzov@gmail.com>
Date:   Fri, 18 Aug 2023 20:34:16 +0300
From:   Andrey Skvortsov <andrej.skvortzov@...il.com>
To:     Steve Longerbeam <slongerbeam@...il.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jarrah Gosbell <kernel@...ef.tools>,
        Arnaud Ferraris <arnaud.ferraris@...labora.com>
Cc:     Andrey Skvortsov <andrej.skvortzov@...il.com>
Subject: [PATCH] media: ov5640: use pm_runtime_force_suspend/resume for system suspend

If system was suspended while camera sensor was used, data and
interrupts were still coming from sensor and that caused unstable
system. Sometimes system hanged during a resume. Use
pm_runtime_force_* helpers in order to support system suspend.

Signed-off-by: Andrey Skvortsov <andrej.skvortzov@...il.com>
---
 drivers/media/i2c/ov5640.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index 5fe85aa2d2ec..8130471caaa6 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -3970,6 +3970,8 @@ static void ov5640_remove(struct i2c_client *client)
 }
 
 static const struct dev_pm_ops ov5640_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				pm_runtime_force_resume)
 	SET_RUNTIME_PM_OPS(ov5640_sensor_suspend, ov5640_sensor_resume, NULL)
 };
 
-- 
2.40.1