Disregard my patch: x86, vsyscall: Fix sparse warning: Using plain integer as NULL

[Emil Goode <emilgoode@gmail.com>]

Please disregard my previous patch. 
I missed the comment saying "0 is a valid user pointer".

Best regards,
Emil Goode

On Sun, 2012-04-01 at 01:59 +0200, Emil Goode wrote:
> This patch silences the following sparse warning:
> arch/x86/kernel/vsyscall_64.c:250:34:
>        warning: Using plain integer as NULL pointer
> 
> Signed-off-by: Emil Goode <emilgoode@gmail.com>
> ---
>  arch/x86/kernel/vsyscall_64.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c
> index f386dc4..6170ff9 100644
> --- a/arch/x86/kernel/vsyscall_64.c
> +++ b/arch/x86/kernel/vsyscall_64.c
> @@ -247,7 +247,7 @@ bool emulate_vsyscall(struct pt_regs *regs, unsigned long address)
>  
>  		ret = sys_getcpu((unsigned __user *)regs->di,
>  				 (unsigned __user *)regs->si,
> -				 0);
> +				 NULL);
>  		break;
>  	}
>