* copy data to/from buffers located outside the DMA region. This
* only works for systems in which DMA memory is at the bottom of
* RAM, the remainder of memory is at the top and the DMA memory
- * can be marked as ZONE_DMA. Anything beyond that such as discontigous
+ * can be marked as ZONE_DMA. Anything beyond that such as discontiguous
* DMA windows will require custom implementations that reserve memory
* areas at early bootup.
*