staging: bcm2835-v4l2: Update the driver to the current VCHI API.

49bec49f ("staging: vc04_services: remove vchiq_copy_from_user")
removed the flags/msg_handle arguments, which were unused, and pushed
the implementation of copying using memcpy vs copy_from_user to the
caller.
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/media/platform/bcm2835/mmal-vchiq.c

@@ -378,6 +378,14 @@ static int inline_receive(struct vchiq_mmal_instance *instance,
 	return 0;
 }
 
+static ssize_t mmal_memcpy_wrapper(void *src, void *dst,
+				   size_t offset, size_t size)
+{
+	memcpy(dst + offset, src + offset, size);
+
+	return size;
+}
+
 /* queue the buffer availability with MMAL_MSG_TYPE_BUFFER_FROM_HOST */
 static int
 buffer_from_host(struct vchiq_mmal_instance *instance,
@@ -442,10 +450,9 @@ buffer_from_host(struct vchiq_mmal_instance *instance,
 
 	vchi_service_use(instance->handle);
 
-	ret = vchi_msg_queue(instance->handle, &m,
+	ret = vchi_msg_queue(instance->handle, mmal_memcpy_wrapper, &m,
 			     sizeof(struct mmal_msg_header) +
-			     sizeof(m.u.buffer_from_host),
-			     VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
+			     sizeof(m.u.buffer_from_host));
 
 	if (ret != 0) {
 		release_msg_context(msg_context);
@@ -731,9 +738,9 @@ static int send_synchronous_mmal_msg(struct vchiq_mmal_instance *instance,
 	vchi_service_use(instance->handle);
 
 	ret = vchi_msg_queue(instance->handle,
+			     mmal_memcpy_wrapper,
 			     msg,
-			     sizeof(struct mmal_msg_header) + payload_len,
-			     VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
+			     sizeof(struct mmal_msg_header) + payload_len);
 
 	vchi_service_release(instance->handle);