[PATCH v2] ARM: Add sanity check for dev->periphid in amba_probe()

[Russell King (Oracle)]

On Tue, Aug 30, 2022 at 02:54:13PM +0800, Zhen Lei wrote:
> Commit f2d3b9a46e0e ("ARM: 9220/1: amba: Remove deferred device addition")
> forcibly invokes device_add() even if dev->periphid is not ready. Although
> it will be remedied in amba_match(): dev->periphid will be initialized
> if everything is in place; Otherwise, return -EPROBE_DEFER to block
> __driver_attach() from further execution. But not all drivers have .match
> hook, such as pl031, the dev->bus->probe will be called directly in
> __driver_attach(). Unfortunately, if dev->periphid is still not
> initialized, the following exception will be triggered.

Please check whether 9229/1 fixes this issue for you.

http://www.armlinux.org.uk/developer/patches/download.php?id=9229/1

Thanks.

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