Re: 2.6.3-mm1 and aic7xxx

[Fabio Coatti <cova@ferrara.linux.it>]

Alle 01:39, lunedì 1 marzo 2004, Fabio Coatti ha scritto:
> Alle 00:45, lunedì 1 marzo 2004, Brown, Len ha scritto:
> > To verify with the latest software, please apply the latest ACPI patch
> > to 2.6.4-rc1:
> >
> > http://ftp.kernel.org/pub/linux/kernel/people/lenb/acpi/patches/release/
> > 2.6.4/acpi-20040220-2.6.4.diff.gz
> >
> > If it works, then something else in -mm is causing your problem.  If it
> > fails, then something in the latest ACPI patch (which is included in
> > -mm1) is causing the failure.
>
> Tried, and with the patch all works just fine. So it can be something else,
> applied in -mm tree after 2.6.3-rc3-mm1, tha causes the failure; i'll try
> to have a look at changes, trying to find which one causes the problem.

I've just tried, as suggested by john stultz <johnstul@us.ibm.com> in  thread 
"2.6.3-mm3 hangs on  boot x440 (scsi?)":

>> Index: arch/i386/kernel/acpi/boot.c
>> ===================================================================
>> RCS file: /var/cvs/linux-2.6/arch/i386/kernel/acpi/boot.c,v
>> retrieving revision 1.10
>> diff -u -p -r1.10 boot.c
>> --- a/arch/i386/kernel/acpi/boot.c    17 Feb 2004 12:51:46 -0000      1.10
>> +++ b/arch/i386/kernel/acpi/boot.c    26 Feb 2004 16:34:12 -0000
>> @@ -506,24 +461,17 @@ acpi_boot_init (void)
>>
>>       acpi_lapic = 1;
>>
>> -#endif /*CONFIG_X86_LOCAL_APIC*/
>> +#endif /* CONFIG_X86_LOCAL_APIC */
>>
>>  #if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_ACPI_INTERPRETER)
>>
>>       /*
>>        * I/O APIC
>> -      * --------
>>        */
>>
>> -     /*
>> -      * ACPI interpreter is required to complete interrupt setup,
>> -      * so if it is off, don't enumerate the io-apics with ACPI.
>> -      * If MPS is present, it will handle them,
>> -      * otherwise the system will stay in PIC mode
>> -      */
>> -     if (acpi_disabled || acpi_noirq) {
>> +     if (acpi_noirq) {
>>               return 1;
>> -        }
>> +     }
>>
>>       /*
>>        * if "noapic" boot option, don't look for IO-APICs
>
>
>That chunk shouldn't drop the "if (acpi_disabled ..." bit.
>Adding that check back in fixes it for me.

In fact, this fixes 2.6.4-rc1-mm1 and now I'm writing using that kernel. I 
don't knoe w if this is a quick hack or a definitive solution, but now mmX 
series works again for me, and scsi devices seems to be correctly handled.




-- 
Fabio Coatti       http://www.ferrara.linux.it/members/cova     
Ferrara Linux Users Group           http://ferrara.linux.it
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