linux-kernel - Re: [GIT PULL] omap changes for v2.6.39 merge window

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Date:	Thu, 26 May 2011 15:38:08 +0200
From:	Pavel Machek <pavel@....cz>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Arnd Bergmann <arnd@...db.de>, Nicolas Pitre <nico@...xnic.net>,
	Detlef Vollmann <dv@...lmann.ch>, Ingo Molnar <mingo@...e.hu>,
	david@...g.hm, Tony Lindgren <tony@...mide.com>,
	Catalin Marinas <catalin.marinas@....com>,
	lkml <linux-kernel@...r.kernel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	David Brown <davidb@...eaurora.org>,
	linux-omap@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [GIT PULL] omap changes for v2.6.39 merge window

Hi!

> There's a number of down-counting clocksources using various methods to
> convert to an up-counting value - sometimes -readl(), sometimes
> cs->mask - readl() and sometimes ~readl().
> 
> Then there's those which are either 16-bit or 32-bit, and some of those
> 16-bit implementations must use readw() to avoid bus faults.
> 
> Combining all those together you end up with something pretty disgusting,
> and an initialization function taking 7 arguments (iomem pointer, name,
> rating, tick rate, size, up/down counter, clocksource flags).

Having structure with 7 fields describing the clock source  seems
completely sane...
								Pavel

-- 
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(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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