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

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Message-ID: <2E89032DDAA8B9408CB92943514A0337D46442AB@SW-EX-MBX01.diasemi.com>
Date:	Tue, 21 Jun 2016 11:50:01 +0000
From:	"Opensource [Adam Thomson]" <Adam.Thomson.Opensource@...semi.com>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>
CC:	"Opensource [Adam Thomson]" <Adam.Thomson.Opensource@...semi.com>,
	"Robert Moore" <robert.moore@...el.com>,
	Lv Zheng <lv.zheng@...el.com>,
	"Rafael J.Wysocki" <rafael.j.wysocki@...el.com>,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Len Brown <lenb@...nel.org>,
	"Andy Shevchenko" <andriy.shevchenko@...ux.intel.com>,
	Rob Herring <robh+dt@...nel.org>,
	Frank Rowand <frowand.list@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Support Opensource <Support.Opensource@...semi.com>,
	Sathyanarayana Nujella <sathyanarayana.nujella@...el.com>
Subject: RE: [RESEND PATCH v3 1/2] device property: Add function to search
 for named child of device

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?