* 0xff is invalid, so they must not be used. Initialization
* fills up those two in the bitmap so they are not allocated.
*
- * We spread the allocation around to reduce the posiblity of two
+ * We spread the allocation around to reduce the possibility of two
* consecutive opened @neh's getting the same context ID assigned (to
* avoid surprises with late events that timed out long time ago). So
* first we search from where @rc->ctx_roll is, if not found, we