linux-kernel - Re: [PATCH v7 01/10] ARM: davinci: move private EDMA API to arm/common

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Message-ID: <CACRpkdaUQ60W8Vmg3MpvP5uV+3jD3y4+9V2et4Ni+z-7k=aFTg@mail.gmail.com>
Date:	Tue, 5 Feb 2013 16:30:45 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Cyril Chemparathy <cyril@...com>
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>, balbi@...com,
	Sergei Shtylyov <sshtylyov@...sta.com>,
	Linux Documentation List <linux-doc@...r.kernel.org>,
	Lindgren <tony@...mide.com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Vinod Koul <vinod.koul@...el.com>,
	"Nair, Sandeep" <sandeep_n@...com>, Chris Ball <cjb@...top.org>,
	Matt Porter <mporter@...com>, Arnd Bergmann <arnd@...db.de>,
	Devicetree Discuss <devicetree-discuss@...ts.ozlabs.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Linux OMAP List <linux-omap@...r.kernel.org>,
	ARM Kernel List <linux-arm-kernel@...ts.infradead.org>,
	Linux DaVinci Kernel List 
	<davinci-linux-open-source@...ux.davincidsp.com>,
	"Cousson, Benoit" <b-cousson@...com>,
	Linux MMC List <linux-mmc@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Landley <rob@...dley.net>, Dan Williams <djbw@...com>,
	Linux SPI Devel List 
	<spi-devel-general@...ts.sourceforge.net>
Subject: Re: [PATCH v7 01/10] ARM: davinci: move private EDMA API to arm/common

On Mon, Feb 4, 2013 at 10:54 PM, Cyril Chemparathy <cyril@...com> wrote:
> On 02/04/2013 04:11 PM, Linus Walleij wrote:

>> Cyril, just stack up the cookies and take a sweep over them to see
>> which ones are baked when the NAPI poll comes in -> problem
>> solved.
>
> You're assuming that cookies complete in order.  That is not necessarily
> true.

So put them on a wait list? Surely you will have a list of pending
cookies and pick from the front of the queue if there isn't a hole on
queue position 0.

Yours,
Linus Walleij
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