case IPC_POSITION_CHANGED:
                trace_ipc_notification("DSP stream position changed for",
                        stream->reply.stream_hw_id);
-               sst_dsp_inbox_read(hsw->dsp, pos, sizeof(pos));
+               sst_dsp_inbox_read(hsw->dsp, pos, sizeof(*pos));
 
                if (stream->notify_position)
                        stream->notify_position(stream, stream->pdata);
        trace_ipc_request("PM enter Dx state", state);
 
        ret = ipc_tx_message_wait(hsw, header, &state_, sizeof(state_),
-               dx, sizeof(dx));
+               dx, sizeof(*dx));
        if (ret < 0) {
                dev_err(hsw->dev, "ipc: error set dx state %d failed\n", state);
                return ret;