*
* Synchronizes the DMA channel termination to the current context. When this
* function returns it is guaranteed that all transfers for previously issued
- * descriptors have stopped and and it is safe to free the memory associated
+ * descriptors have stopped and it is safe to free the memory associated
* with them. Furthermore it is guaranteed that all complete callback functions
* for a previously submitted descriptor have finished running and it is safe to
* free resources accessed from within the complete callbacks.