From mboxrd@z Thu Jan  1 00:00:00 1970
From: linux@arm.linux.org.uk (Russell King - ARM Linux)
Date: Mon, 15 Feb 2016 08:58:18 +0000
Subject: arm qemu test failures due to 'driver-core: platform: probe
 of-devices only using list of compatibles'
In-Reply-To: <20160215081750.GD12289@pengutronix.de>
References: <20160214165010.GA3189@roeck-us.net>
 <20160214195501.GA12289@pengutronix.de>
 <20160214200755.GB10826@n2100.arm.linux.org.uk>
 <20160215081750.GD12289@pengutronix.de>
Message-ID: <20160215085818.GC10826@n2100.arm.linux.org.uk>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Mon, Feb 15, 2016 at 09:17:50AM +0100, Uwe Kleine-K?nig 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-K?nig 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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