When a channel is created by user space application with the
RPMSG_CREATE_DEV_IOCTL controls, a ns announcement has to be sent
(depending on backend) to inform the remote side that a new service
is available.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@xxxxxxxxxxx>
---
drivers/rpmsg/rpmsg_core.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c
index 3f86512147e8..27aad6baf7c5 100644
--- a/drivers/rpmsg/rpmsg_core.c
+++ b/drivers/rpmsg/rpmsg_core.c
@@ -145,6 +145,9 @@ EXPORT_SYMBOL(rpmsg_destroy_ept);
*
* This function returns a pointer to an endpoint created and assigned as the default
* endpoint of the rpmsg device.
+ * If we need to, we also announce about this channel to the remote
+ * processor. This announcement is needed in case the driver is exposing an rpmsg service that has
+ * been created locally.
*
* Drivers should provide their @rpdev channel (so the new endpoint would belong
* to the same remote processor their channel belongs to), an rx callback
@@ -161,6 +164,7 @@ struct rpmsg_endpoint *rpmsg_create_default_ept(struct rpmsg_device *rpdev,
struct rpmsg_channel_info chinfo)
{
struct rpmsg_endpoint *ept;
+ int err;
if (WARN_ON(!rpdev))
return NULL;
@@ -183,6 +187,17 @@ struct rpmsg_endpoint *rpmsg_create_default_ept(struct rpmsg_device *rpdev,
rpdev->ept = ept;
rpdev->src = ept->addr;
+ if (rpdev->ops->announce_create) {
+ err = rpdev->ops->announce_create(rpdev);
+ if (err) {
+ rpmsg_destroy_ept(ept);
+ rpdev->ept = NULL;
+ rpdev->src = RPMSG_ADDR_ANY;
+
+ return NULL;
+ }
+ }
+
return ept;
}
EXPORT_SYMBOL(rpmsg_create_default_ept);
--
2.17.1
