Re: Boot regression on Mackerel with current mainline

From: Rafael J. Wysocki
Date: Tue Jul 03 2012 - 13:04:51 EST

On Tuesday, July 03, 2012, Guennadi Liakhovetski wrote:
> Hi Rafael
> On Tue, 3 Jul 2012, Rafael J. Wysocki wrote:
> > Hi,
> >
> > We seem to have a functional regression on Mackerel with 3.5-rc5 which
> > seems to be related to SDHI. Namely, the SDHI driver appears to wait forever
> > for the devices to appear and commenting out all of the sdhi devices in the
> > board file works around the problem.
> >
> > I can investigate some more later today if need be.
> Have you checked the logs? Are you seeing any of these in the kernel log:
> genirq: Threaded irq requested with handler=NULL and !ONESHOT for irq

I see this only once per boot, but then sh_mobile_sdhi is saying "timeout
waiting for hardware interrupt" pretty much continuously.

> with an IRQ number at the end? If so, then this is a known problem, which
> I'd hoped would have been long fixed by now:
> We can nommit a fix for it in mmc, or we can try to re-ping Thomas - if
> this is indeed the bug, you're getting...

I guess it is, but having reviewed the above e-mail thread I don't think any
fix from Thomas is going to appear. So, please fix that in MMC, if possible.

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