linux-kernel - Re: [PATCH] tools: Strong conversion of void type pointer could be removed

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Date:   Mon, 27 Jun 2022 13:57:47 -0600
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     Li kunyu <kunyu@...china.com>, shuah@...nel.org
Cc:     linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH] tools: Strong conversion of void type pointer could be
 removed

On 6/27/22 2:56 AM, Li kunyu wrote:
> The void pointer argument does not require a cast assignment because it
> is the address passed.
> 

Please include information on you found this problem with output
from the tool if any used. Send v2 with that information included
in the commit log.

> Signed-off-by: Li kunyu <kunyu@...china.com>
> ---
>   tools/testing/selftests/x86/fsgsbase.c      | 2 +-
>   tools/testing/selftests/x86/test_vsyscall.c | 2 +-
>   2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/testing/selftests/x86/fsgsbase.c b/tools/testing/selftests/x86/fsgsbase.c
> index 8c780cce941d..5d99261317e1 100644
> --- a/tools/testing/selftests/x86/fsgsbase.c
> +++ b/tools/testing/selftests/x86/fsgsbase.c
> @@ -63,7 +63,7 @@ static void clearhandler(int sig)
>   
>   static void sigsegv(int sig, siginfo_t *si, void *ctx_void)
>   {
> -	ucontext_t *ctx = (ucontext_t*)ctx_void;
> +	ucontext_t *ctx = ctx_void;
>   
>   	if (!want_segv) {
>   		clearhandler(SIGSEGV);
> diff --git a/tools/testing/selftests/x86/test_vsyscall.c b/tools/testing/selftests/x86/test_vsyscall.c
> index 5b45e6986aea..2416941a0952 100644
> --- a/tools/testing/selftests/x86/test_vsyscall.c
> +++ b/tools/testing/selftests/x86/test_vsyscall.c
> @@ -184,7 +184,7 @@ static volatile unsigned long segv_err;
>   
>   static void sigsegv(int sig, siginfo_t *info, void *ctx_void)
>   {
> -	ucontext_t *ctx = (ucontext_t *)ctx_void;
> +	ucontext_t *ctx = ctx_void;
>   
>   	segv_err =  ctx->uc_mcontext.gregs[REG_ERR];
>   	siglongjmp(jmpbuf, 1);
> 

thanks,
-- Shuah