Problem serial.c on module

Tom Rini trini at kernel.crashing.org
Sat Sep 29 04:05:58 EST 2001


On Fri, Sep 28, 2001 at 10:41:23AM -0700, David A. Gatwood wrote:
> On Friday, September 28, 2001, at 08:15 AM, Tom Rini wrote:
>
> >On Fri, Sep 28, 2001 at 02:33:01PM +0900, KOBAYASHI R. Taizo wrote:
> >
> >>I examined this problem and had a question.
> >>Dose it need following branch?
> >>================L5375==
> >>#ifdef CONFIG_ALL_PPC
> >>        /* early PowerMacs would machine check */
> >>        if (_machine == _MACH_Pmac) {
> >>                printk(KERN_INFO "serial.c: nothing to do on
> >>PowerMacs.\n");
> >>                return 0;
> >>        }
> >>#endif
> >>=======================
> >
> >Some older machines apparently do.  The current 'workaround' in 2_4 is
> >#if defined(CONFIG_ALL_PPC) && !defined(MODULE).
>
> That's disgusting.  This should be doing the Linux equivalent of setjmp
> and trapping the machine check and returning 0.  Hardware probes
> shouldn't need hacks like this.  Just my $0.02.

Thats what should be happening.  But apparently it still doesn't on a few
older machines.   Or it didn't the last time I got an answer out of Olaf at SuSE.

--
Tom Rini (TR1265)
http://gate.crashing.org/~trini/

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/





More information about the Linuxppc-dev mailing list