linux-kernel - Re: [PATCH] ACPI: Add new sysfs interface to export device description

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Date:	Tue, 02 Oct 2012 00:14:45 -0400
From:	Len Brown <lenb@...nel.org>
To:	"Ortiz, Lance E" <lance.oritz@...com>
CC:	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>,
	"rob@...dley.net" <rob@...dley.net>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>
Subject: Re: [PATCH] ACPI: Add new sysfs interface to export device description

> 
> To address your comment, I was trying to differentiate between the existence of the _STR method and the failure to evaluate it.
> If an STR method exists, we create the sysfs file.  If it fails to
evaluate, we will see "No Description" when we read the file.
> This would indicate that something is wrong as opposed to the system not having an _STR.
> If you feel that this is unnecessary, or should be done differently let me know.

This patch looks useful, and I this does seem like a logical place
to export this information.

however, I'd think that an empty attribute instead of "No description"
is sufficient to cover the case of _STR existing, but for some reason
failing to evaluate.

thanks,
Len Brown, Intel Open Source Technology Center

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