On Thu, 15 Dec 2016, Loic Pallardy wrote:
> Since commit 4dffed5b3ac796b ("rpmsg: Name rpmsg devices based on
> channel id"), it is no more possible for a firmware to register twice
> a service (on different endpoints). rpmsg_register_device function
> is failing when calling device_add for the second time as second
> device has the same name as first one already register.
> It is because name is based only on service name and so is not more
> unique. Previously name was unique thanks to the use of rpmsg_dev_index.
>
> This patch adds destination and source endpoint numbers device name to
> create an unique identifier.
>
> Signed-off-by: Loic Pallardy <loic.pallardy@xxxxxx>
> ---
> v2: Update commit header with commit ID generating regression
> Fix rpmsg_core instead of virtio_rpmsg
>
> drivers/rpmsg/rpmsg_core.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
Acked-by: Marek Novak <marek.novak@xxxxxxx>
> diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c
> index a79cb5a..18c73e0 100644
> --- a/drivers/rpmsg/rpmsg_core.c
> +++ b/drivers/rpmsg/rpmsg_core.c
> @@ -453,8 +453,8 @@ int rpmsg_register_device(struct rpmsg_device *rpdev)
> struct device *dev = &rpdev->dev;
> int ret;
>
> - dev_set_name(&rpdev->dev, "%s:%s",
> - dev_name(dev->parent), rpdev->id.name);
> + dev_set_name(&rpdev->dev, "%s.%d.%d.%s", dev_name(dev->parent),
> + rpdev->src, rpdev->dst, rpdev->id.name);
>
> rpdev->dev.bus = &rpmsg_bus;
> rpdev->dev.release = rpmsg_release_device;
--
Marek Novak
Multicore Software Engineer
NXP Semiconductors
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