Re: Christmas list for the kernel

Jon Smirl
2005-11-23T15:31:17Z

On 11/23/05, Russell King <rmk+lkml@arm.linux.org.uk> wrote:
> > This is confusing...
> >
> > Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled
> > serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
> > serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
> > serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
> > serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A

Could this be the source of the four port versus the two port
confusion in the higher layers? It says 4 ports and list four ports,
but two are duplicates.

>
> Yes it is, but it's down to the way folk want things to operate. The
> first two come from the legacy table in include/asm-*/serial.h. The
> second two come from something-that-I-have-no-clue-about but is probably
> ACPI related. Dunno. We're back to the far-too-many-complex-ways-to-
> initialise-serial problem again that I've given up really caring how
> many lines of serial printk junk folk end up with. I can't fight it
> all.

--
Jon Smirl
jonsmirl@gmail.com