arm qemu test failures due to 'driver-core: platform: probe of-devices only using list of compatibles'
Russell King - ARM Linux
linux at arm.linux.org.uk
Mon Feb 15 00:58:18 PST 2016
On Mon, Feb 15, 2016 at 09:17:50AM +0100, Uwe Kleine-König wrote:
> Hello Russell,
>
> On Sun, Feb 14, 2016 at 08:07:55PM +0000, Russell King - ARM Linux wrote:
> > On Sun, Feb 14, 2016 at 08:55:01PM +0100, Uwe Kleine-König wrote:
> > > So the unexpected abnormality here is that even though this device is
> > > instantiated by dt, the driver doesn't provide any compatibles.
> > > Either my expectation is wrong, then 67d02a1bbb33455 should be reverted
> >
> > Your expectation is wrong. AMBA primecell devices have hardware IDs
> > and are matched to their drivers by those IDs. Just like PCI.
>
> pci devices don't appear in dt, do they? I don't see the connection
> between amba devices and platform devices, see my other mail in this
> thread for some more details.
They both have hardware IDs, and they are both matched via those hardware
IDs.
Your change has introduced a regression and is therefore wrong.
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