linux-kernel - Re: [RFC 01/23] gpio/omap: raw read and write endian fix

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Message-ID: <20131119154353.GC10317@atomide.com>
Date:	Tue, 19 Nov 2013 07:43:53 -0800
From:	Tony Lindgren <tony@...mide.com>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	Taras Kondratiuk <taras.kondratiuk@...aro.org>,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
	Linux-OMAP <linux-omap@...r.kernel.org>,
	linaro-networking@...aro.org,
	Victor Kamensky <victor.kamensky@...aro.org>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Kevin Hilman <khilman@...prootsystems.com>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC 01/23] gpio/omap: raw read and write endian fix

* Linus Walleij <linus.walleij@...aro.org> [131119 01:29]:
> On Sat, Nov 16, 2013 at 1:01 AM, Taras Kondratiuk
> <taras.kondratiuk@...aro.org> wrote:
> 
> > From: Victor Kamensky <victor.kamensky@...aro.org>
> >
> > All OMAP IP blocks expect LE data, but CPU may operate in BE mode.
> > Need to use endian neutral functions to read/write h/w registers.
> > I.e instead of __raw_read[lw] and __raw_write[lw] functions code
> > need to use read[lw]_relaxed and write[lw]_relaxed functions.
> > If the first simply reads/writes register, the second will byteswap
> > it if host operates in BE mode.
> >
> > Changes are trivial sed like replacement of __raw_xxx functions
> > with xxx_relaxed variant.
> >
> > Signed-off-by: Victor Kamensky <victor.kamensky@...aro.org>
> > Signed-off-by: Taras Kondratiuk <taras.kondratiuk@...aro.org>
> 
> Since I generally just dislike __raw accessors I went and applied
> this. If it collides with any of Tony's fixup work I might need to
> take the patch out again, no big deal.

Thanks, this should not conflict with what I have. I just had few
fixes for the twl4030-gpio for older omaps and I doubt that I have
further driver dependencies beyond that for my clean-up work.
 
> Some ACKs would be nice, but unless there are major objections
> this stays merged.

Acked-by: Tony Lindgren <tony@...mide.com>
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