[PATCH 001/001 Updated] PMAC HD runtime blinking control

Benjamin Herrenschmidt benh at kernel.crashing.org
Tue Jan 24 10:10:26 EST 2006

On Tue, 2006-01-24 at 07:31 +1000, Cedric Pradalier wrote:
> According to Benjamin Herrenschmidt, on Tue, 24 Jan 2006
> 00:47:16 +1100, 
> >> The key I could not understand was that hwif->gendev is
> >> only initialised in the probe. So I had to move the
> >> device creation after that.
> >> 
> >> Currently, it is blinking by default. Should it be that
> >> way? I guess so, since it is activated by a kernel config
> >> option. It is easy to change if required.
> >
> >Yes. In fact, by enabled default for ATA disks and by disabled for ATAPI
> >would make sense...
> How do I tell the difference?. There is a 'kind' in pmif,
> and also a atapi_dma flag in hwif. Which is more sensible?

You need to check drive->media ... Which is a bit annoying since it mans
it's per drive, not per-HWIF... you may want to move your sysfs entry
down one more level :) (Each HWIF has an array of 2 drives, though check
drive->present before expecting a useful struct device there)

> >Also, we should think a bit about the file name... "blinking_led" isn't
> >terrific for something that will end up in a non-ppc specific location.
> >Or maybe on the contrary it's good ... what about "activity_led"
> >rather ?
> >
> I'm open to any suggestion. I'll wait a bit to see if
> someone else has a comment, then I'll change to
> "activity_led". 
> --
> Cedric

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