The use of v4l2_async_notifier_add_subdev is discouraged.
Drivers are instead encouraged to use a helper such as
v4l2_async_notifier_add_fwnode_remote_subdev.
This fixes a misuse of the API, as v4l2_async_notifier_add_subdev
should get a kmalloc'ed struct v4l2_async_subdev,
removing some boilerplate code while at it.
Use the appropriate helper: v4l2_async_notifier_add_i2c_subdev
or v4l2_async_notifier_add_fwnode_remote_subdev, which handles
the needed setup, instead of open-coding it.
Signed-off-by: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx>
---
drivers/media/platform/marvell-ccic/cafe-driver.c | 14 +++++++++++---
drivers/media/platform/marvell-ccic/mcam-core.c | 10 ----------
drivers/media/platform/marvell-ccic/mcam-core.h | 1 -
drivers/media/platform/marvell-ccic/mmp-driver.c | 11 ++++++++---
4 files changed, 19 insertions(+), 17 deletions(-)
diff --git a/drivers/media/platform/marvell-ccic/cafe-driver.c b/drivers/media/platform/marvell-ccic/cafe-driver.c
index 00f623d62c96..91d65f71be96 100644
--- a/drivers/media/platform/marvell-ccic/cafe-driver.c
+++ b/drivers/media/platform/marvell-ccic/cafe-driver.c
@@ -489,6 +489,7 @@ static int cafe_pci_probe(struct pci_dev *pdev,
int ret;
struct cafe_camera *cam;
struct mcam_camera *mcam;
+ struct v4l2_async_subdev *asd;
/*
* Start putting together one of our big camera structures.
@@ -546,9 +547,16 @@ static int cafe_pci_probe(struct pci_dev *pdev,
if (ret)
goto out_pdown;
- mcam->asd.match_type = V4L2_ASYNC_MATCH_I2C;
- mcam->asd.match.i2c.adapter_id = i2c_adapter_id(cam->i2c_adapter);
- mcam->asd.match.i2c.address = ov7670_info.addr;
+ v4l2_async_notifier_init(&mcam->notifier);
+
+ asd = v4l2_async_notifier_add_i2c_subdev(&mcam->notifier,
+ i2c_adapter_id(cam->i2c_adapter),
+ ov7670_info.addr,
+ sizeof(*asd));
+ if (IS_ERR(asd)) {
+ ret = PTR_ERR(asd);
+ goto out_smbus_shutdown;
+ }
ret = mccic_register(mcam);
if (ret)
diff --git a/drivers/media/platform/marvell-ccic/mcam-core.c b/drivers/media/platform/marvell-ccic/mcam-core.c
index c012fd2e1d29..153277e4fe80 100644
--- a/drivers/media/platform/marvell-ccic/mcam-core.c
+++ b/drivers/media/platform/marvell-ccic/mcam-core.c
@@ -1866,16 +1866,6 @@ int mccic_register(struct mcam_camera *cam)
cam->pix_format = mcam_def_pix_format;
cam->mbus_code = mcam_def_mbus_code;
- /*
- * Register sensor notifier.
- */
- v4l2_async_notifier_init(&cam->notifier);
- ret = v4l2_async_notifier_add_subdev(&cam->notifier, &cam->asd);
- if (ret) {
- cam_warn(cam, "failed to add subdev to a notifier");
- goto out;
- }
-
cam->notifier.ops = &mccic_notify_ops;
ret = v4l2_async_notifier_register(&cam->v4l2_dev, &cam->notifier);
if (ret < 0) {
diff --git a/drivers/media/platform/marvell-ccic/mcam-core.h b/drivers/media/platform/marvell-ccic/mcam-core.h
index b55545822fd2..f324d808d737 100644
--- a/drivers/media/platform/marvell-ccic/mcam-core.h
+++ b/drivers/media/platform/marvell-ccic/mcam-core.h
@@ -151,7 +151,6 @@ struct mcam_camera {
*/
struct video_device vdev;
struct v4l2_async_notifier notifier;
- struct v4l2_async_subdev asd;
struct v4l2_subdev *sensor;
/* Videobuf2 stuff */
diff --git a/drivers/media/platform/marvell-ccic/mmp-driver.c b/drivers/media/platform/marvell-ccic/mmp-driver.c
index 032fdddbbecc..40d9fc4a731a 100644
--- a/drivers/media/platform/marvell-ccic/mmp-driver.c
+++ b/drivers/media/platform/marvell-ccic/mmp-driver.c
@@ -180,6 +180,7 @@ static int mmpcam_probe(struct platform_device *pdev)
struct resource *res;
struct fwnode_handle *ep;
struct mmp_camera_platform_data *pdata;
+ struct v4l2_async_subdev *asd;
int ret;
cam = devm_kzalloc(&pdev->dev, sizeof(*cam), GFP_KERNEL);
@@ -238,10 +239,15 @@ static int mmpcam_probe(struct platform_device *pdev)
if (!ep)
return -ENODEV;
- mcam->asd.match_type = V4L2_ASYNC_MATCH_FWNODE;
- mcam->asd.match.fwnode = fwnode_graph_get_remote_port_parent(ep);
+ v4l2_async_notifier_init(&mcam->notifier);
+ asd = v4l2_async_notifier_add_fwnode_remote_subdev(&mcam->notifier,
+ ep, sizeof(*asd));
fwnode_handle_put(ep);
+ if (IS_ERR(asd)) {
+ ret = PTR_ERR(asd);
+ goto out;
+ }
/*
* Register the device with the core.
@@ -278,7 +284,6 @@ static int mmpcam_probe(struct platform_device *pdev)
pm_runtime_enable(&pdev->dev);
return 0;
out:
- fwnode_handle_put(mcam->asd.match.fwnode);
mccic_shutdown(mcam);
return ret;
--
2.29.2
