libcamera: pipeline: ipu3: frames: Associate buffers with the request

Ensure that the buffers are associated with the request even if they are
used internally to be able to correctly map back to the resources they
are being used to fulfil.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/libcamera/pipeline/ipu3/cio2.cpp

@@ -278,10 +278,9 @@ FrameBuffer *CIO2Device::queueBuffer(Request *request, FrameBuffer *rawBuffer)
 
 		buffer = availableBuffers_.front();
 		availableBuffers_.pop();
+		buffer->setRequest(request);
 	}
 
-	buffer->setRequest(request);
-
 	int ret = output_->queueBuffer(buffer);
 	if (ret)
 		return nullptr;

src/libcamera/pipeline/ipu3/frames.cpp

@@ -58,6 +58,9 @@ IPU3Frames::Info *IPU3Frames::create(Request *request)
 	FrameBuffer *paramBuffer = availableParamBuffers_.front();
 	FrameBuffer *statBuffer = availableStatBuffers_.front();
 
+	paramBuffer->setRequest(request);
+	statBuffer->setRequest(request);
+
 	availableParamBuffers_.pop();
 	availableStatBuffers_.pop();