On Mon, Jun 29, 2015 at 12:12:01PM +0200, Andreas Färber wrote: > Am 29.06.2015 um 07:36 schrieb David Gibson: > > At present, the core device model code for 8250-like serial ports > > (serial.c) and the code for serial ports attached to ISA-style legacy IO > > (serial-isa.c) are both controlled by the CONFIG_SERIAL variable. > > > > There are lots and lots of embedded platforms that have 8250-like serial > > ports but have never had anything resembling ISA legacy IO. Therefore, > > split serial-isa into its own CONFIG_SERIAL_ISA option so it can be > > disabled for platforms where it's not appropriate. > > > > For now, I enabled CONFIG_SERIAL_ISA in every default-config where > > CONFIG_SERIAL is enabled, excepting microblaze, xtensa and or32. Those > > platforms have technically lost functionality, but since they have no > > other PCI or ISA devices, it's fairly clear they never actually used > > leagacy IO stuff. > > I think we can add moxie to that list, I'd be very surprised if it uses > ISA. Applies also to 2/4. CC'ing the maintainer.
Right. I'm being deliberately conservative in what I removed here.
With this patch in place it's easy for boards to remove ISA serial
support in future, but that seems like a change best made by the
people who actually know the boards.
> Which arm machines use ISA?
I don't know, but the point was I couldn't quickly convince myself
that none did.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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