rpmsg: core: Remove deadcode

rpmsg_send_offchannel() and rpmsg_trysend_offchannel() have been
unused since they were added in 2011's
commit bcabbccabffe ("rpmsg: add virtio-based remote processor messaging
bus")

Remove them and associated docs.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Acked-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Link: https://lore.kernel.org/r/20250429234600.301083-2-linux@treblig.org
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>

1 files changed, 0 insertions, 46 deletions

diff --git a/Documentation/staging/rpmsg.rst b/Documentation/staging/rpmsg.rst
index 3713adaa1608..40282cca86ca 100644
--- a/Documentation/staging/rpmsg.rst
+++ b/Documentation/staging/rpmsg.rst
@@ -112,31 +112,6 @@ Returns 0 on success and an appropriate error value on failure.
 
 ::
 
-  int rpmsg_send_offchannel(struct rpmsg_endpoint *ept, u32 src, u32 dst,
-							void *data, int len);
-
-
-sends a message across to the remote processor, using the src and dst
-addresses provided by the user.
-
-The caller should specify the endpoint, the data it wants to send,
-its length (in bytes), and explicit source and destination addresses.
-The message will then be sent to the remote processor to which the
-endpoint's channel belongs, but the endpoint's src and channel dst
-addresses will be ignored (and the user-provided addresses will
-be used instead).
-
-In case there are no TX buffers available, the function will block until
-one becomes available (i.e. until the remote processor consumes
-a tx buffer and puts it back on virtio's used descriptor ring),
-or a timeout of 15 seconds elapses. When the latter happens,
--ERESTARTSYS is returned.
-
-The function can only be called from a process context (for now).
-Returns 0 on success and an appropriate error value on failure.
-
-::
-
   int rpmsg_trysend(struct rpmsg_endpoint *ept, void *data, int len);
 
 sends a message across to the remote processor from a given endpoint.
@@ -175,27 +150,6 @@ Returns 0 on success and an appropriate error value on failure.
 
 ::
 
-  int rpmsg_trysend_offchannel(struct rpmsg_endpoint *ept, u32 src, u32 dst,
-							void *data, int len);
-
-
-sends a message across to the remote processor, using source and
-destination addresses provided by the user.
-
-The user should specify the channel, the data it wants to send,
-its length (in bytes), and explicit source and destination addresses.
-The message will then be sent to the remote processor to which the
-channel belongs, but the channel's src and dst addresses will be
-ignored (and the user-provided addresses will be used instead).
-
-In case there are no TX buffers available, the function will immediately
-return -ENOMEM without waiting until one becomes available.
-
-The function can only be called from a process context (for now).
-Returns 0 on success and an appropriate error value on failure.
-
-::
-
   struct rpmsg_endpoint *rpmsg_create_ept(struct rpmsg_device *rpdev,
 					  rpmsg_rx_cb_t cb, void *priv,
 					  struct rpmsg_channel_info chinfo);