Re: IDE probe failure in 2.6.25-mm1

[Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>]

On Wednesday 30 April 2008, Andrew Morton wrote:
> On Wed, 30 Apr 2008 23:43:14 +0530
> Balaji Rao <balajirrao@gmail.com> wrote:
> 
> > Hi Andrew,
> > 
> > IDE probe fails in 2.6.25-mm1 on qemu.
> > 
> > [    0.664164] Uniform Multi-Platform E-IDE driver
> > [    1.571508] ide0: DISABLED, NO IRQ
> > [    1.572380] ide0: failed to initialize IDE interface
> > 
> > This is the output with linux-2.6.git
> > 
> > [    1.567368] ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> > [    1.571430] hda: max request size: 512KiB
> > [    1.574302] hda: 10485760 sectors (5368 MB) w/256KiB Cache, CHS=10402/255/63
> > [    1.583896] hda: cache flushes supported
> > [    1.585053]  hda: hda1
> > 
> > This is apparently due to the invasive changes in hwif_t's io_ports member.
> > 
> 
> OK, thanks.
> 
> I _think_ Bart idenfitied a patch which caused this (or something like it)
> and dropped it?

Yep.

Two patches were dropped from IDE tree:

	ide-fix-hwif-s-initialization.patch
	ide-make-ide_hwifs-static.patch

there is also a hot-fix patch available: 

	http://article.gmane.org/gmane.linux.ide/30860

+ for qemu switching to using piix host driver (qemu emulates PIIX3) should
also workaround the issue since it seems to happen only with ide_generic.

Thanks,
Bart