-receive_buf() - Hand buffers of bytes from the driver to the ldisc
- for processing. Semantics currently rather
- mysterious 8(
+receive_buf() - (optional) Called by the low-level driver to hand
+ a buffer of received bytes to the ldisc for
+ processing. The number of bytes is guaranteed not
+ to exceed the current value of tty->receive_room.
+ All bytes must be processed.
+
+receive_buf2() - (optional) Called by the low-level driver to hand
+ a buffer of received bytes to the ldisc for
+ processing. Returns the number of bytes processed.
+
+ If both receive_buf() and receive_buf2() are
+ defined, receive_buf2() should be preferred.