Re: IDE driver assined IRQ for disabled IDE channel

[Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>]

On Wednesday 30 July 2008, TAKADA Yoshihito wrote:
> From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
> Subject: Re: IDE driver assined IRQ for disabled IDE channel
> Date: Sun, 27 Jul 2008 15:56:52 +0200
> 
> > ide_generic has no enablebits checking but 'ide_generic.probe_mask=1'
> > kernel parameter can be used to limit probing to the first port only.
> 
> Ok, I understood.
> 
> > However shouldn't a designated IDE PCI host driver be used instead?
> 
> I feel drivers/ide/cs5520 is unstable with TuxOnIce. So I use ide_generic
> instead of cs5520 and looked at the state

This may be because cs5520 lacks proper PCI Power Management support
(which will be addressed really soon - 2.6.27-rc1 has the needed
infrastructure and I will post the follow up patch addding it today).

> > [ if this is Cx5520 PCI IDE, the cs5520 host driver misses enablebits
> >   checking, untested fix attached ]
> 
> Yes, My little box has cs5520. I applied the patch, it works fine.
> dmesg says:
> 
> Uniform Multi-Platform E-IDE driver
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> Cyrix 5520: IDE controller (0x1078:0x0002 rev 0x00) at  PCI slot 0000:00:12.0
> PCI: Setting latency timer of device 0000:00:12.0 to 64
> Cyrix 5520: IDE port disabled
>     ide0: BM-DMA at 0x5000-0x5007
> Probing IDE interface ide0...
> hda: IC25N030ATCS04-0, ATA DISK drive

Thanks, for testing it.

I'll push the fix to Linus and once it is in I'll ping the -stable
team to merge 2.6.26 version.

Thanks,
Bart