* H. Peter Anvin <hpa@xxxxxxxxx> wrote:
> On 09/12/2013 11:53 AM, Mark Salter wrote:
> >
> > diff --git a/drivers/parport/Kconfig b/drivers/parport/Kconfig
> > index 70694ce..fa005a9 100644
> > --- a/drivers/parport/Kconfig
> > +++ b/drivers/parport/Kconfig
> > @@ -35,9 +35,7 @@ if PARPORT
> >
> > config PARPORT_PC
> > tristate "PC-style hardware"
> > - depends on (!SPARC64 || PCI) && !SPARC32 && !M32R && !FRV && !S390 && \
> > - (!M68K || ISA) && !MN10300 && !AVR32 && !BLACKFIN && \
> > - !XTENSA && !CRIS && !H8300
> > + depends on ARCH_MAY_HAVE_PC_PARPORT
> >
> > ---help---
> > You should say Y here if you have a PC-style parallel port. All
> >
>
> I'm somewhat astonished that this driver is that problematic. It is
> really just a very basic PIO interface, at least in the absence of
> EPP/ECP.
>
> It is, of course, also largely a dead interface at this point so it
> probably doesn't matter.
So, my collection of 'randconfig kernel crashers' has this exclusion and
comment:
--- linux.orig/drivers/block/Kconfig
+++ linux/drivers/block/Kconfig
@@ -77,6 +77,11 @@ config GDROM
config PARIDE
tristate "Parallel port IDE device support"
depends on PARPORT_PC
+
+ # the probe can hang during bootup on non-PARIDE boxes
+ depends on BROKEN_BOOT_ALLOWED
+ select BROKEN_BOOT if PARIDE = y
+
So at least some uses of PARPORT_PC are unsafe. (might easily be a bug in
PARIDE)
Thanks,
Ingo
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