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Date:	Sat, 12 May 2012 12:56:14 +0000
From:	Arnd Bergmann <>
To:	Thierry Reding <>
	Linus Walleij <>,
	Grant Likely <>
Subject: Re: [PATCH] gpiolib: Use seq_file's iterator interface

On Thursday 12 April 2012, Thierry Reding wrote:
> When dumping a collection of items via seq_file, it is recommended to
> use the iterator interface. For the gpiolib debugfs interface this can
> be done to dump each GPIO chip in turn.
> Note that for gpiolib this is a little cumbersome because it does not
> provide a list of registered GPIO chips and the only way to iterate is
> over each GPIO individually. Once a chip is found, the number of GPIOs
> it provides can be skipped as a small optimization.
> This patch was requested by Arnd Bergmann here:
> Signed-off-by: Thierry Reding <>
> Cc: Linus Walleij <>
> Cc: Grant Likely <>
> Cc: Arnd Bergmann <>
> Cc:

Reviewed-by: Arnd Bergmann <>
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