linux-kernel - Re: [PATCH] clk: mediatek: remove unnecessary include header from reset.c

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Message-ID: <20171227173846.GB7997@codeaurora.org>
Date:   Wed, 27 Dec 2017 09:38:46 -0800
From:   Stephen Boyd <sboyd@...eaurora.org>
To:     Sean Wang <sean.wang@...iatek.com>
Cc:     mturquette@...libre.com, matthias.bgg@...il.com, jdelvare@...e.de,
        jamesjj.liao@...iatek.com, weiyi.lu@...iatek.com, arnd@...db.de,
        linux-mediatek@...ts.infradead.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] clk: mediatek: remove unnecessary include header from
 reset.c

On 12/27, Sean Wang wrote:
> On Tue, 2017-12-26 at 17:10 -0800, Stephen Boyd wrote:
> > On 12/25, sean.wang@...iatek.com wrote:
> > > From: Sean Wang <sean.wang@...iatek.com>
> > > 
> > > In fact, the clk-mtk.h header is indeed not needed for reset.c and thus
> > > it's safe and good change to remove it from the file.
> > > 
> > > Signed-off-by: Sean Wang <sean.wang@...iatek.com>
> > > Reviewed-by: Jean Delvare <jdelvare@...e.de>
> > > Cc: Jean Delvare <jdelvare@...e.de>
> > > ---
> > >  drivers/clk/mediatek/reset.c | 2 --
> > >  1 file changed, 2 deletions(-)
> > > 
> > > diff --git a/drivers/clk/mediatek/reset.c b/drivers/clk/mediatek/reset.c
> > > index d3551d5..70ebb2e 100644
> > > --- a/drivers/clk/mediatek/reset.c
> > > +++ b/drivers/clk/mediatek/reset.c
> > > @@ -19,8 +19,6 @@
> > >  #include <linux/reset-controller.h>
> > >  #include <linux/slab.h>
> > >  
> > > -#include "clk-mtk.h"
> > > -
> > 
> > drivers/clk/mediatek/reset.c:64:6: warning: symbol 'mtk_register_reset_controller' was not declared. Should it be static?
> > 
> 
> It cannot be static since the function would be referenced in other
> files under the same folder
> 
> 
> One point I felt confused which is I didn't see the warning complains
> when I did these build test, even I also added -Werror and -Wall to
> build all files under driver/clk/mediatek. My toolchain is based on gcc
> version 5.2.0 (GCC).
> 
> 
> If the warning still is, the include "clk-mtk.h" should be good to stay
> there because the declaration it needs is in the clk-mtk.h
> 

The warning is from sparse. I built the file with C=2 on the
commandline.

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