linux-kernel - Re: [PATCH -tip] x86: e820.h fix various signedness issues in setup.c and e820.c

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Date:	Sun, 22 Mar 2009 21:09:37 +0100
From:	Sam Ravnborg <sam@...nborg.org>
To:	Jaswinder Singh Rajput <jaswinder@...nel.org>
Cc:	Ingo Molnar <mingo@...e.hu>, x86 maintainers <x86@...nel.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Yinghai Lu <yinghai@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -tip] x86: e820.h fix various signedness issues in setup.c and e820.c

On Mon, Mar 23, 2009 at 12:53:51AM +0530, Jaswinder Singh Rajput wrote:
> 
> From: Jaswinder Singh Rajput <jaswinderrajput@...il.com>
> Date: Mon, 23 Mar 2009 00:27:11 +0530
> Subject: [PATCH] x86: e820.h fix various signedness issues in setup.c and e820.c
> 
> Impact: cleanup
> 
> This fixed various signedness issues in setup.c and e820.c:
> arch/x86/kernel/setup.c:455:53: warning: incorrect type in argument 3 (different signedness)
> arch/x86/kernel/setup.c:455:53:    expected int *pnr_map
> arch/x86/kernel/setup.c:455:53:    got unsigned int extern [toplevel] *<noident>
> arch/x86/kernel/setup.c:639:53: warning: incorrect type in argument 3 (different signedness)
> arch/x86/kernel/setup.c:639:53:    expected int *pnr_map
> arch/x86/kernel/setup.c:639:53:    got unsigned int extern [toplevel] *<noident>
> arch/x86/kernel/setup.c:820:54: warning: incorrect type in argument 3 (different signedness)
> arch/x86/kernel/setup.c:820:54:    expected int *pnr_map
> arch/x86/kernel/setup.c:820:54:    got unsigned int extern [toplevel] *<noident>
> 
> arch/x86/kernel/e820.c:670:53: warning: incorrect type in argument 3 (different signedness)
> arch/x86/kernel/e820.c:670:53:    expected int *pnr_map
> arch/x86/kernel/e820.c:670:53:    got unsigned int [toplevel] *<noident>
> 
> Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@...il.com>
> ---
>  arch/x86/include/asm/e820.h |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h
> index 00d41ce..a1e1c54 100644
> --- a/arch/x86/include/asm/e820.h
> +++ b/arch/x86/include/asm/e820.h
> @@ -57,7 +57,7 @@ struct e820entry {
>  } __attribute__((packed));
>  
>  struct e820map {
> -	__u32 nr_map;
> +	int nr_map;
>  	struct e820entry map[E820_X_MAX];
>  };

but that header is exported so use of plain int looks wrong.

	Sam
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