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Message-Id: <1158016465.15465.2.camel@localhost.localdomain> Date: Tue, 12 Sep 2006 09:14:25 +1000 From: Benjamin Herrenschmidt <benh@...nel.crashing.org> To: Olaf Hering <olaf@...fle.de> Cc: linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org Subject: Re: [PATCH] Prevent legacy io access on pmac On Mon, 2006-09-11 at 13:53 +0200, Olaf Hering wrote: > The ppc32 common config runs also on PReP/CHRP, which uses PC style IO > devices. The probing is bogus, it crashes or floods dmesg. > > ppc can boot one single binary on prep, chrp and pmac boards. > ppc64 can boot one single binary on pseries and G5 boards. > pmac has no legacy io, probing for PC style legacy hardware leads to a > hard crash: > > * add check for parport_pc, exit on pmac. > 32bit chrp has no ->check_legacy_ioport, the probe is always called. > 64bit chrp has check_legacy_ioport, check for a "parallel" node > > * add check for isapnp, only PReP boards may have real ISA slots. > 32bit PReP will have no ->check_legacy_ioport, the probe is always called. > > * update code in i8042_platform_init. Run ->check_legacy_ioport first, always > call request_region. No functional change. Remove whitespace before i8042_reset init. > > > Signed-off-by: Olaf Hering <olaf@...fle.de> Looks good to me. Acked-by: Benjamin Herrenschmidt <benh@...nel.crashing.org> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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