Problem serial.c on module

[David A. Gatwood]

On Friday, September 28, 2001, at 11:05 AM, Tom Rini wrote:

> 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.

Sounds like a lowmem_vectors problem or similar.  What machine and
processor?


David


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