linux-kernel - Re: [PATCH 4/6] isdn/hisax: clean function declaration in hscx.c up

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Date:   Sat, 24 Sep 2016 10:45:14 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Baoyou Xie <baoyou.xie@...aro.org>
Cc:     isdn@...ux-pingi.de, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, xie.baoyou@....com.cn
Subject: Re: [PATCH 4/6] isdn/hisax: clean function declaration in hscx.c up

On Saturday, September 24, 2016 1:24:22 PM CEST Baoyou Xie wrote:
>  }
>  
> -extern int open_hscxstate(struct IsdnCardState *cs, struct BCState *bcs);
>  extern void modehscx(struct BCState *bcs, int mode, int bc);
>  extern void hscx_l2l1(struct PStack *st, int pr, void *arg);
>  

The change makes sense, but I would remove the other two declarations
as well, as extern declarations don't belong into .c files.

As far as I can tell, modehscx() already has a declaration in hscx.h,
while hscx_l2l1() doesn't, and the declaration here should be
moved as well.

> diff --git a/drivers/isdn/hisax/hscx.h b/drivers/isdn/hisax/hscx.h
> index 1148b4b..fa7bf16 100644
> --- a/drivers/isdn/hisax/hscx.h
> +++ b/drivers/isdn/hisax/hscx.h
> @@ -39,3 +39,4 @@ extern void modehscx(struct BCState *bcs, int mode, int bc);
>  extern void clear_pending_hscx_ints(struct IsdnCardState *cs);
>  extern void inithscx(struct IsdnCardState *cs);
>  extern void inithscxisac(struct IsdnCardState *cs, int part);
> +int open_hscxstate(struct IsdnCardState *cs, struct BCState *bcs);

For consistency, I would add 'extern' here. We normally leave that out,
but I think if there are lots of declarations in a header file that all
have it, it's better if they are all the same.

	Arnd