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Date:	Wed, 19 Dec 2012 22:12:40 +0900 (JST)
From:	Atsushi Nemoto <anemo@....ocn.ne.jp>
To:	axel.lin@...ics.com
Cc:	akpm@...ux-foundation.org, a.zummo@...ertech.it,
	rtc-linux@...glegroups.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rtc: tx4939: Kill get_tx4939rtc_plat_data() function

On Wed, 19 Dec 2012 17:29:04 +0800, Axel Lin <axel.lin@...ics.com> wrote:
> Simply use dev_get_drvdata() instead.
> 
> Signed-off-by: Axel Lin <axel.lin@...ics.com>
> ---
>  drivers/rtc/rtc-tx4939.c |   21 ++++++++-------------
>  1 file changed, 8 insertions(+), 13 deletions(-)

Hi Axel,

Thank you for cleanup, but, a platform driver should use
platform_get_drvdata / platform_set_drvdata, no?

I think using dev_get_drvdata() in platform_get_drvdata() is an
implementation detail of the platform device framework, so we should
not depends on such an internal detail.

If there was any reason to use dev_get_drvdata, please convert all
platform_get_drvdata and platform_set_drvdata to dev_get_drvdata and
dev_set_drvdata.  We should avoid mixing two APIs.

---
Atsushi Nemoto
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