linux-kernel - Re: [PATCHv10 2/4] mailbox: Introduce framework for mailbox

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Date:	Sat, 2 Aug 2014 13:20:16 +0530
From:	Jassi Brar <jaswinder.singh@...aro.org>
To:	Mark Brown <broonie@...nel.org>
Cc:	Devicetree List <devicetree@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	"ks.giri@...sung.com" <ks.giri@...sung.com>,
	Arnd Bergmann <arnd@...db.de>,
	"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
	Mark Rutland <mark.rutland@....com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Courtney Cavin <courtney.cavin@...ymobile.com>,
	Matt Porter <mporter@...aro.org>,
	Craig McGeachie <slapdau@...oo.com.au>,
	LeyFoon Tan <lftan.linux@...il.com>,
	Loic Pallardy <loic.pallardy@...com>,
	"Anna, Suman" <s-anna@...com>,
	Ashwin Chaugule <ashwin.chaugule@...aro.org>,
	Bjorn Andersson <bjorn@...o.se>,
	Patch Tracking <patches@...aro.org>,
	Mollie Wu <mollie.wu@...aro.org>,
	Tetsuya Takinishi <t.takinishi@...fujitsu.com>,
	Kevin Hilman <khilman@...aro.org>,
	Lee Jones <lee.jones@...aro.org>,
	Andy Green <andy.green@...aro.org>
Subject: Re: [PATCHv10 2/4] mailbox: Introduce framework for mailbox

On 2 August 2014 00:07, Mark Brown <broonie@...nel.org> wrote:
> On Fri, Aug 01, 2014 at 06:01:36PM +0530, Jassi Brar wrote:
>> Introduce common framework for client/protocol drivers and
>> controller drivers of Inter-Processor-Communication (IPC).
>>
>> Client driver developers should have a look at
>>  include/linux/mailbox_client.h to understand the part of
>> the API exposed to client drivers.
>> Similarly controller driver developers should have a look
>> at include/linux/mailbox_controller.h
>
> Reviewed-by: Mark Brown <broonie@...aro.org>
>
> One very minor thing:
>
>> +     t = add_to_rbuf(chan, mssg);
>> +     if (t < 0) {
>> +             pr_err("Try increasing MBOX_TX_QUEUE_LEN\n");
>> +             return t;
>> +     }
>
> In this and the other error messages it's probably worth doing something
> like a dev_ print with the device in the mbox_controller - if there's
> more than one mailbox controller in the system it may well make
> someone's life easier to get a hint about which one is running into
> trouble.  Similarly if there were some identification for the channels
> that might be useful to display that (perhaps add a name field people
> can initialize if they like in the struct?).
>
> This is clearly not a blocker for merge though.
>
OK will do.

Thanks,
Jassi


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