linux-kernel - Re: [PATCH v2-UPDATE2 3/4] resource: Add device-managed insert/remove

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Date:	Tue, 8 Mar 2016 12:05:22 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Toshi Kani <toshi.kani@....com>
Cc:	Ingo Molnar <mingo@...nel.org>, Borislav Petkov <bp@...e.de>,
	Dan Williams <dan.j.williams@...el.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>,
	Linux ACPI <linux-acpi@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2-UPDATE2 3/4] resource: Add device-managed insert/remove_resource()

On Tue, Mar 8, 2016 at 10:08 AM, Toshi Kani <toshi.kani@....com> wrote:
>
> Add device-managed implementaions of insert_resource() and
> remove_resouce() functions.

Can we get an example of the users and show how much this would actually help?

insert_resource() is fairly unusual to begin with, and it should
basically *never* be used by a driver at all (it's more of a bus
thing).

The patch doesn't look _wrong_, but it does look potentially largely
pointless. Adding new interfaces to do things that aren't common
enough to worry about is counter-productive, imho.

                 Linus