[PATCH] Stop pmac_zilog from abusing 8250's device numbers.
tytso at mit.edu
Thu Apr 5 03:41:53 EST 2007
On Wed, Apr 04, 2007 at 09:16:42AM -0700, H. Peter Anvin wrote:
> One option would be to move the 8250-based serial ports, to, say,
> /dev/ttyN* (for National Semiconductors -- the best I could come up
> with) and redefine /dev/ttyS* as a serial port multiplexer which maps in
> all the types, for the ones that really want dynamic mapping.
> Of course, now you have the potential of aliasing, again, which tends to
> cause all kinds of headaches w.r.t. locking.
That would break the 99.9% of the the world using Intel-based systems
which only have 8250's, for very little gain.
Like it or not, /dev/ttySx and 8250 UART's are to serial ports what
the PCI is to system buses....
More information about the Linuxppc-dev