On Tue, Apr 13, 2021 at 03:44:55PM +0200, Arnaud Pouliquen wrote:
> Introduce the __rpmsg_chrdev_create_eptdev internal function that returns
> the rpmsg_eptdev context structure.
>
> This patch prepares the introduction of a rpmsg channel device for the
> char device. The rpmsg device will need a reference to the context.
>
> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@xxxxxxxxxxx>
>
> ---
> update from V1
> - fix __rpmsg_chrdev_create_eptdev function header indentation.
>
> ---
> drivers/rpmsg/rpmsg_char.c | 23 ++++++++++++++++++-----
> 1 file changed, 18 insertions(+), 5 deletions(-)
Reviewed-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
>
> diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
> index 21ef9d9eccd7..a64249d83172 100644
> --- a/drivers/rpmsg/rpmsg_char.c
> +++ b/drivers/rpmsg/rpmsg_char.c
> @@ -323,8 +323,9 @@ static void rpmsg_eptdev_release_device(struct device *dev)
> kfree(eptdev);
> }
>
> -int rpmsg_chrdev_create_eptdev(struct rpmsg_device *rpdev, struct device *parent,
> - struct rpmsg_channel_info chinfo, struct class *rpmsg_class)
> +static struct rpmsg_eptdev *
> +__rpmsg_chrdev_create_eptdev(struct rpmsg_device *rpdev, struct device *parent,
> + struct rpmsg_channel_info chinfo, struct class *rpmsg_class)
> {
> struct rpmsg_eptdev *eptdev;
> struct device *dev;
> @@ -332,7 +333,7 @@ int rpmsg_chrdev_create_eptdev(struct rpmsg_device *rpdev, struct device *parent
>
> eptdev = kzalloc(sizeof(*eptdev), GFP_KERNEL);
> if (!eptdev)
> - return -ENOMEM;
> + return ERR_PTR(-ENOMEM);
>
> dev = &eptdev->dev;
> eptdev->rpdev = rpdev;
> @@ -376,7 +377,7 @@ int rpmsg_chrdev_create_eptdev(struct rpmsg_device *rpdev, struct device *parent
> put_device(dev);
> }
>
> - return ret;
> + return eptdev;
>
> free_ept_ida:
> ida_simple_remove(&rpmsg_ept_ida, dev->id);
> @@ -386,7 +387,19 @@ int rpmsg_chrdev_create_eptdev(struct rpmsg_device *rpdev, struct device *parent
> put_device(dev);
> kfree(eptdev);
>
> - return ret;
> + return ERR_PTR(ret);
> +}
> +
> +int rpmsg_chrdev_create_eptdev(struct rpmsg_device *rpdev, struct device *parent,
> + struct rpmsg_channel_info chinfo, struct class *rpmsg_class)
> +{
> + struct rpmsg_eptdev *eptdev;
> +
> + eptdev = __rpmsg_chrdev_create_eptdev(rpdev, parent, chinfo, rpmsg_class);
> + if (IS_ERR(eptdev))
> + return PTR_ERR(eptdev);
> +
> + return 0;
> }
> EXPORT_SYMBOL(rpmsg_chrdev_create_eptdev);
>
> --
> 2.17.1
>
