linux-kernel - Re: [patch] x86, ptrace: void dopiness

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Date:	Mon, 22 Sep 2008 13:50:58 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Markus Metzger <markus.t.metzger@...el.com>
Cc:	markus.t.metzger@...il.com, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, Roland McGrath <roland@...hat.com>
Subject: Re: [patch] x86, ptrace: void dopiness


* Markus Metzger <markus.t.metzger@...el.com> wrote:

> +++ gits.x86/arch/x86/kernel/ptrace.c	2008-09-19 13:53:02.%N +0200
> @@ -738,7 +738,7 @@
>  		unsigned int sig = 0;
>  
>  		/* we ignore the error in case we were not tracing child */
> -		(void)ds_release_bts(child);
> +		ds_release_bts(child);

hm, here the cast is OK because we actually ignore the return value.

> @@ -947,7 +947,7 @@
>  	clear_tsk_thread_flag(child, TIF_SYSCALL_EMU);
>  #endif
>  #ifdef CONFIG_X86_PTRACE_BTS
> -	(void)ds_release_bts(child);
> +	ds_release_bts(child);

is it right/intentional here?

	Ingo
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