linux-kernel - [PATCH v3 08/20] media: i2c: ov4689: Enable runtime PM before registering sub-device

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Date: Thu, 29 Feb 2024 19:53:21 +0300
From: Mikhail Rudenko <mike.rudenko@...il.com>
To: linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Jacopo Mondi <jacopo@...ndi.org>,
	Tommaso Merciai <tomm.merciai@...il.com>,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	Dave Stevenson <dave.stevenson@...pberrypi.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Mikhail Rudenko <mike.rudenko@...il.com>
Subject: [PATCH v3 08/20] media: i2c: ov4689: Enable runtime PM before registering sub-device

As the sensor may be accessible right after its async sub-device is
registered, enable runtime PM before doing so.

Signed-off-by: Mikhail Rudenko <mike.rudenko@...il.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
---
 drivers/media/i2c/ov4689.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/drivers/media/i2c/ov4689.c b/drivers/media/i2c/ov4689.c
index 47feb6b5ede8..0e0e694510aa 100644
--- a/drivers/media/i2c/ov4689.c
+++ b/drivers/media/i2c/ov4689.c
@@ -875,19 +875,21 @@ static int ov4689_probe(struct i2c_client *client)
 		goto err_clean_entity;
 	}
 
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+	pm_runtime_idle(dev);
+
 	ret = v4l2_async_register_subdev_sensor(sd);
 	if (ret) {
 		dev_err(dev, "v4l2 async register subdev failed\n");
-		goto err_clean_subdev;
+		goto err_clean_subdev_pm;
 	}
 
-	pm_runtime_set_active(dev);
-	pm_runtime_enable(dev);
-	pm_runtime_idle(dev);
-
 	return 0;
 
-err_clean_subdev:
+err_clean_subdev_pm:
+	pm_runtime_disable(dev);
+	pm_runtime_set_suspended(dev);
 	v4l2_subdev_cleanup(sd);
 err_clean_entity:
 	media_entity_cleanup(&sd->entity);
-- 
2.43.0