Re: [3.6-rc3 regression] sata_mv cannot get optional clkdev breakingboot on QNAP TS-119P+

From: Mikael Pettersson
Date: Sat Aug 25 2012 - 11:43:26 EST


Andrew Lunn writes:
> On Sat, Aug 25, 2012 at 03:01:33PM +0200, Mikael Pettersson wrote:
> > My Kirkwood-based QNAP TS-119P+ boots fine with the 3.5 kernel. With
> > 3.6-rc2 and 3.6-rc3 however sata_mv complains:
> >
> > sata_mv sata_mv.0: cannot get optional clkdev
> > sata_mv sata_mv.0: slots 32 ports 2
> >
> > and then the kernel grinds to a halt with no further messages.
> >
> > Full boot log from 3.6-rc3 appended below. .config available upon
> > request, but this is a non-DT kernel.
>
> Hi Mikael
>
> This is a known issue. See:
>
> http://comments.gmane.org/gmane.linux.ports.arm.kernel/181989
>
> There are patches being developed to fix this. I hope we can push them
> to an RC soon.

Thanks for the pointer. Aaro Koskinen's suggestion of passing
coherent_pool=1M to the kernel allowed it to boot successfully.
I'll use that workaround for now.

/Mikael
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