From: Guenter Roeck <linux@roeck-us.net>
To: Sachin Kamat <sachin.kamat@linaro.org>
Cc: linux-watchdog@vger.kernel.org, Wim Van Sebroeck <wim@iguana.be>
Subject: Re: [1/3] watchdog: at91rm9200: Remove redundant of_match_ptr
Date: Wed, 2 Oct 2013 08:13:47 -0700 [thread overview]
Message-ID: <20131002151347.GA14121@roeck-us.net> (raw)
In-Reply-To: <CAK9yfHz4vPbiSq+85OegDN4bJ-UWy6RFxhi+4HJnWoCBMxpUNA@mail.gmail.com>
On Wed, Oct 02, 2013 at 12:13:04PM +0530, Sachin Kamat wrote:
> Hi Guenter,
>
> On 2 October 2013 02:18, Guenter Roeck <linux@roeck-us.net> wrote:
> > On Mon, Sep 30, 2013 at 12:42:51PM -0000, Sachin Kamat wrote:
> >> The data structure of_match_ptr() protects is always compiled in.
> >> Hence of_match_ptr() is not needed.
> >>
> >> Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
> >>
> >
> > Hi Sachin,
> >
> > I understand that the driver doesn't currently support to be built as module,
> > so of_match_ptr() is not really necessary. But unless I am missing something,
> > here isn't anything wrong with it either, not does it hurt to have it in place.
> >
> > So what is the benefit of this series ?
>
> of_match_ptr() is a macro used to avoid undefined reference error if
> CONFIG_OF is used to selectively compile in or out the
> data structure. It is defined as follows:
>
> #ifdef CONFIG_OF
> #define of_match_ptr(ptr) ptr
> #else
> #define of_match_ptr(ptr) NULL
> #endif
>
> In the case of this series, none of the drivers use CONFIG_OF macro to
> compile out the data structure (i.e., the data structure is always
> defined).
> Hence the use of of_match_ptr() does not make any sense. Thus removing
> it to make the code look simpler for readability.
>
> Hope this clarifies.
Ok, I'll accept that.
Acked-by: Guenter Roeck <linux@roeck-us.net>
next prev parent reply other threads:[~2013-10-02 15:13 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-30 4:42 [PATCH 1/3] watchdog: at91rm9200: Remove redundant of_match_ptr Sachin Kamat
2013-09-30 4:42 ` [PATCH 2/3] watchdog: orion: " Sachin Kamat
2013-10-02 15:15 ` [2/3] " Guenter Roeck
2013-09-30 4:42 ` [PATCH 3/3] watchdog: sunxi: " Sachin Kamat
2013-10-02 15:16 ` [3/3] " Guenter Roeck
2013-10-01 20:48 ` [1/3] watchdog: at91rm9200: " Guenter Roeck
2013-10-02 6:43 ` Sachin Kamat
2013-10-02 15:13 ` Guenter Roeck [this message]
2013-10-02 16:08 ` Sachin Kamat
2013-10-28 6:27 ` Sachin Kamat
2013-10-29 7:46 ` [PATCH 1/3] " Wim Van Sebroeck
2013-10-29 9:38 ` Sachin Kamat
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