[alsa-devel] [RESEND PATCH v3 1/2] device property: Add function to search for named child of device

[Mika Westerberg]

On Tue, Jun 21, 2016 at 11:50:01AM +0000, Opensource [Adam Thomson] wrote:
> 21 June 2016 12:42, Rafael J. Wysocki wrote:
> 
> > > > +static inline bool acpi_data_node_match(struct fwnode_handle *fwnode,
> > > > +					const char *name)
> > > > +{
> > > > +	return is_acpi_data_node(fwnode) ?
> > > > +		(!strcasecmp(to_acpi_data_node(fwnode)->name, name)) : false;
> > > > +}
> > >
> > > Looks fine to me.
> > >
> > > One question - is it expected that matching ACPI data nodes is always
> > > case insensitive?
> > 
> > That would not be a correct expectation in theory, although I don't think it
> > really matters in practice.
> 
> From my reading of the Hierarchical Data Extension and ACPI Spec, I thought
> that was the case (section 19.3.1 ASL Names - ASL names are not case-sensitive
> and will be converted to upper case). Am I misreading the documents/missing
> something else?

Those are names in the ASL code itself.

What we are talking here are actually just string values (name of the
data node).