[PATCH v2] parport_pc: Also enable driver for PCI systems

[Maciej W. Rozycki]

On Wed, 2 Mar 2022, Sudip Mukherjee wrote:

> > Make the PARPORT_PC option selectable also for PCI systems then, except
> > for the s390 arch, however limit the availability of PARPORT_PC_SUPERIO
> > to platforms that enable ARCH_MIGHT_HAVE_PC_PARPORT.  Update platforms
> > accordingly for the required <asm/parport.h> header.
> >
> > Signed-off-by: Maciej W. Rozycki <macro at orcam.me.uk>
> 
> Acked-by: Sudip Mukherjee <sudipm.mukherjee at gmail.com>
> 
> Usually parport patches goes via Greg's tree. Adding Greg.

 Thank you.  I have since been able to move my parport card to my RISC-V 
machine, and the result is as follows:

parport_pc 0000:07:00.0: enabling device (0000 -> 0001)
PCI parallel port detected: 1415:c118, I/O at 0x8(0x4), IRQ 38
parport0: PC-style at 0x8 (0x4), irq 38, using FIFO [PCSPP,TRISTATE,COMPAT,EPP,ECP]
lp0: using parport0 (interrupt-driven).

with the patch from:

<https://lore.kernel.org/lkml/alpine.DEB.2.21.2202260044180.25061@angie.orcam.me.uk/>

also applied so as to prevent I/O port 0 from being assigned by PCI code 
that wouldn't actually work (so allocation for the two BARs is at 0x4 and 
0x8 instead).

  Maciej