linux-kernel - Re: [RFC PATCH 01/11] dma: amba-pl08x: Use bitmap to pass variant specific quirks

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Message-ID: <12368941.dQe8bcScGj@flatron>
Date:	Mon, 17 Jun 2013 20:56:06 +0200
From:	Tomasz Figa <tomasz.figa@...il.com>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-spi@...r.kernel.org, alsa-devel@...a-project.org,
	Kukjin Kim <kgene.kim@...sung.com>,
	Vinod Koul <vinod.koul@...el.com>, Dan Williams <djbw@...com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Alessandro Rubini <rubini@...dd.com>,
	Giancarlo Asnaghi <giancarlo.asnaghi@...com>,
	Mark Brown <broonie@...nel.org>,
	Grant Likely <grant.likely@...aro.org>,
	Sangbeom Kim <sbkim73@...sung.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	Padmavathi Venna <padma.v@...sung.com>,
	Thomas Abraham <thomas.abraham@...aro.org>,
	Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
	Heiko Stübner <heiko@...ech.de>,
	Sylwester Nawrocki <sylvester.nawrocki@...il.com>,
	Alban Bedel <alban.bedel@...onic-design.de>
Subject: Re: [RFC PATCH 01/11] dma: amba-pl08x: Use bitmap to pass variant specific quirks

On Monday 17 of June 2013 19:48:56 Russell King - ARM Linux wrote:
> On Sun, Jun 16, 2013 at 10:54:08PM +0200, Tomasz Figa wrote:
> > Instead of defining new bool field in vendor_data struct for each
> > quirk, it is more reasonable to use a single flags field and make
> > each quirk use single bits.
> 
> Please explain why this is better over the existing system, and why it
> is not just churn for code modification's sake.

It isn't anything important. I just thought that this is a better solution 
to store more than just two flags. Initially I had more of them added in 
further patches, but final version ended with just one, so this can be 
dropped.

Best regards,
Tomasz

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