staging: vchi: Get rid of vchi_queue_user_message()

The function has no users.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Link: https://lore.kernel.org/r/20200527115400.31391-3-nsaenzjulienne@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/vc04_services/interface/vchi/vchi.h b/drivers/staging/vc04_services/interface/vchi/vchi.h
index 686cfc5..62d9d3e 100644 (file)
--- a/drivers/staging/vc04_services/interface/vchi/vchi.h
+++ b/drivers/staging/vc04_services/interface/vchi/vchi.h
@@ -111,12 +111,6 @@ vchi_queue_kernel_message(struct vchi_service_handle *handle,
                          void *data,
                          unsigned int size);
 
-/* Routine to send a message from user memory across a service */
-extern int
-vchi_queue_user_message(struct vchi_service_handle *handle,
-                       void __user *data,
-                       unsigned int size);
-
 // Routine to receive a msg from a service
 // Dequeue is equivalent to hold, copy into client buffer, release
 extern int32_t vchi_msg_dequeue(struct vchi_service_handle *handle,

diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c
index 9a04065..2c2bd7a 100644 (file)
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c
@@ -150,40 +150,6 @@ vchi_queue_kernel_message(struct vchi_service_handle *handle,
 }
 EXPORT_SYMBOL(vchi_queue_kernel_message);
 
-struct vchi_queue_user_message_context {
-       void __user *data;
-};
-
-static ssize_t
-vchi_queue_user_message_callback(void *context,
-                                void *dest,
-                                size_t offset,
-                                size_t maxsize)
-{
-       struct vchi_queue_user_message_context *copycontext = context;
-
-       if (copy_from_user(dest, copycontext->data + offset, maxsize))
-               return -EFAULT;
-
-       return maxsize;
-}
-
-int
-vchi_queue_user_message(struct vchi_service_handle *handle,
-                       void __user *data,
-                       unsigned int size)
-{
-       struct vchi_queue_user_message_context copycontext = {
-               .data = data
-       };
-
-       return vchi_msg_queue(handle,
-                             vchi_queue_user_message_callback,
-                             &copycontext,
-                             size);
-}
-EXPORT_SYMBOL(vchi_queue_user_message);
-
 /***********************************************************
  * Name: vchi_bulk_queue_receive
  *