| Message ID | 20210112132339.5621-9-ezequiel@collabora.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | V4L2 Async notifier API cleanup | expand |
Hi Ezequiel, On Tue, Jan 12, 2021 at 10:23:34AM -0300, Ezequiel Garcia wrote: > 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@collabora.com> looks good, thanks Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Thanks j > --- > 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 >
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;
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@collabora.com> --- 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(-)