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Date: Mon, 25 Oct 2010 09:03:15 -0700 (PDT)
From: Alex Dubov <oakad@yahoo.com>
Subject: Re: [PATCH 19/29] memstick: jmb38x_ms: add register read/write functions
To: Maxim Levitsky <maximlevitsky@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Maxim Levitsky <maximlevitsky@gmail.com>
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--- On Fri, 22/10/10, Maxim Levitsky <maximlevitsky@gmail.com> wrote:

> From: Maxim Levitsky <maximlevitsky@gmail.com>
> Subject: [PATCH 19/29] memstick: jmb38x_ms: add register read/write functions
> To: "Alex Dubov" <oakad@yahoo.com>
> Cc: "Andrew Morton" <akpm@linux-foundation.org>, "LKML" <linux-kernel@vger.kernel.org>, "Maxim Levitsky" <maximlevitsky@gmail.com>
> Received: Friday, 22 October, 2010, 4:53 PM
> All over the code it is a bit easier
> to see the
> register access with this patch. Also set/clear mask
> helpers refactor code a bit, but the biggest reason
> for this patch is to make it possible to trace register
> read/writes with a flip of a module param.
> 
> Currently these functions are unused, but will be by later
> code
> 
> Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>

This looks like a case of:
1. You've run into a technical difficulty.
2. You used some temporary code to resolve and document it.
3. Now this temporary code is forever here to stay.