| Message ID | 20210112132339.5621-8-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 10:23:33AM -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_fwnode_remote_subdev, > which handles the needed setup, instead of open-coding it. > > Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com> Seems good! Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Thanks j > --- > drivers/media/platform/cadence/cdns-csi2rx.c | 16 ++++++---------- > 1 file changed, 6 insertions(+), 10 deletions(-) > > diff --git a/drivers/media/platform/cadence/cdns-csi2rx.c b/drivers/media/platform/cadence/cdns-csi2rx.c > index be9ec59774d6..7d299cacef8c 100644 > --- a/drivers/media/platform/cadence/cdns-csi2rx.c > +++ b/drivers/media/platform/cadence/cdns-csi2rx.c > @@ -81,7 +81,6 @@ struct csi2rx_priv { > struct media_pad pads[CSI2RX_PAD_MAX]; > > /* Remote source */ > - struct v4l2_async_subdev asd; > struct v4l2_subdev *source_subdev; > int source_pad; > }; > @@ -362,6 +361,7 @@ static int csi2rx_get_resources(struct csi2rx_priv *csi2rx, > static int csi2rx_parse_dt(struct csi2rx_priv *csi2rx) > { > struct v4l2_fwnode_endpoint v4l2_ep = { .bus_type = 0 }; > + struct v4l2_async_subdev *asd; > struct fwnode_handle *fwh; > struct device_node *ep; > int ret; > @@ -395,17 +395,13 @@ static int csi2rx_parse_dt(struct csi2rx_priv *csi2rx) > return -EINVAL; > } > > - csi2rx->asd.match.fwnode = fwnode_graph_get_remote_port_parent(fwh); > - csi2rx->asd.match_type = V4L2_ASYNC_MATCH_FWNODE; > - of_node_put(ep); > - > v4l2_async_notifier_init(&csi2rx->notifier); > > - ret = v4l2_async_notifier_add_subdev(&csi2rx->notifier, &csi2rx->asd); > - if (ret) { > - fwnode_handle_put(csi2rx->asd.match.fwnode); > - return ret; > - } > + asd = v4l2_async_notifier_add_fwnode_remote_subdev(&csi2rx->notifier, > + fwh, sizeof(*asd)); > + of_node_put(ep); > + if (IS_ERR(asd)) > + return PTR_ERR(asd); > > csi2rx->notifier.ops = &csi2rx_notifier_ops; > > -- > 2.29.2 >
diff --git a/drivers/media/platform/cadence/cdns-csi2rx.c b/drivers/media/platform/cadence/cdns-csi2rx.c index be9ec59774d6..7d299cacef8c 100644 --- a/drivers/media/platform/cadence/cdns-csi2rx.c +++ b/drivers/media/platform/cadence/cdns-csi2rx.c @@ -81,7 +81,6 @@ struct csi2rx_priv { struct media_pad pads[CSI2RX_PAD_MAX]; /* Remote source */ - struct v4l2_async_subdev asd; struct v4l2_subdev *source_subdev; int source_pad; }; @@ -362,6 +361,7 @@ static int csi2rx_get_resources(struct csi2rx_priv *csi2rx, static int csi2rx_parse_dt(struct csi2rx_priv *csi2rx) { struct v4l2_fwnode_endpoint v4l2_ep = { .bus_type = 0 }; + struct v4l2_async_subdev *asd; struct fwnode_handle *fwh; struct device_node *ep; int ret; @@ -395,17 +395,13 @@ static int csi2rx_parse_dt(struct csi2rx_priv *csi2rx) return -EINVAL; } - csi2rx->asd.match.fwnode = fwnode_graph_get_remote_port_parent(fwh); - csi2rx->asd.match_type = V4L2_ASYNC_MATCH_FWNODE; - of_node_put(ep); - v4l2_async_notifier_init(&csi2rx->notifier); - ret = v4l2_async_notifier_add_subdev(&csi2rx->notifier, &csi2rx->asd); - if (ret) { - fwnode_handle_put(csi2rx->asd.match.fwnode); - return ret; - } + asd = v4l2_async_notifier_add_fwnode_remote_subdev(&csi2rx->notifier, + fwh, sizeof(*asd)); + of_node_put(ep); + if (IS_ERR(asd)) + return PTR_ERR(asd); csi2rx->notifier.ops = &csi2rx_notifier_ops;
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_fwnode_remote_subdev, which handles the needed setup, instead of open-coding it. Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com> --- drivers/media/platform/cadence/cdns-csi2rx.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-)