linux-kernel - Re: [PATCH v7 1/4] Documentation: dt: add common bindings for hwspinlock

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Date:	Thu, 5 Feb 2015 16:34:06 -0800
From:	Bjorn Andersson <bjorn@...o.se>
To:	Suman Anna <s-anna@...com>
Cc:	Ohad Ben-Cohen <ohad@...ery.com>,
	Mark Rutland <mark.rutland@....com>,
	Rob Herring <robherring2@...il.com>,
	Kumar Gala <galak@...eaurora.org>,
	Josh Cartwright <joshc@...eaurora.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH v7 1/4] Documentation: dt: add common bindings for hwspinlock

On Thu, Feb 5, 2015 at 4:11 PM, Suman Anna <s-anna@...com> wrote:
> Hi Bjorn,
>
> On 02/05/2015 05:01 PM, Bjorn Andersson wrote:
[..]
>> Will you send out a new revision of the binding? I would love to get
>> this integrated so I can move on with the dependents.
>
> Yep, will do as soon as I hear from Ohad on what to do with the patch
> "hwspinlock/core: maintain a list of registered hwspinlock banks" that I
> dropped from v7. Without that and dropping hwlock-base-id, I can't get
> the translations done.
>

My suggestion is to replace the global id-tree with a list of hwlocks
and iterate over these if we ever get more than one driver registered.
As long as #hwlock-drivers < log(#total-hwlocks) this should be
faster.

I would however argue that clients that would notice any kind of
difference are using the API incorrectly.


Unfortunately this is a somewhat larger change than just slapping DT
support on the framework :/

Regards,
Bjorn
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