Messages in this thread | | | Date | Wed, 4 Oct 2023 16:40:16 +0100 | From | Mark Brown <> | Subject | Re: [PATCH] soundwire: fix initializing sysfs for same devices on different buses |
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On Wed, Oct 04, 2023 at 11:16:09AM -0400, Pierre-Louis Bossart wrote:
> > matching the name is fine (if you are matching it against an existing > > name) but expecting the name to be anything specific is not going to > > work as the name is dynamic and can/will change each boot.
> Not following, sorry.
> In the SoundWire context, the device name directly follows the ACPI or > Device Tree information, I don't really see how its name could change on > each boot (assuming no DSDT override or overlays of course). The > platform descriptors are pretty much fixed, aren't they?
> Intel and AMD make such assumptions on names for pretty much all machine > drivers, it's not really something new - probably 15+ years? Adding Mark > Brown in CC: to make sure he's aware of this thread.
FWIW DT is much less affected here since all the inter-device references are explicit in the DT (modulo needing to work around breakage) so we're not hard coding in the way ACPI so unfortunately requires. [unhandled content-type:application/pgp-signature] | |