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SubjectRE: [patch] x86, ptrace: void dopiness
Date
From
>-----Original Message-----
>From: Ingo Molnar [mailto:mingo@elte.hu]
>Sent: Montag, 22. September 2008 13:51
>To: Metzger, Markus T
>Cc: markus.t.metzger@gmail.com; linux-kernel@vger.kernel.org;
>akpm@linux-foundation.org; Roland McGrath
>Subject: Re: [patch] x86, ptrace: void dopiness
>
>
>* Markus Metzger <markus.t.metzger@intel.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?

The void-cast is intentional in both cases.

I thought it a question of style, i.e. that we don't want void casts
just like we want NULL instead of 0.

regards,
markus.

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