On Tue, Feb 16, 2021 at 11:31:33AM +0800, Tianjia Zhang wrote:
> In this scenario, there is no case where va_page is NULL, and
> the error has been checked. The if-condition statement here is
> redundant, so remove the condition detection.
> 
> Signed-off-by: Tianjia Zhang <tianjia.zh...@linux.alibaba.com>
> Acked-by: Jarkko Sakkinen <jar...@kernel.org>
> ---
>  arch/x86/kernel/cpu/sgx/ioctl.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/x86/kernel/cpu/sgx/ioctl.c b/arch/x86/kernel/cpu/sgx/ioctl.c
> index 1c6ecf9fbeff..719c21cca569 100644
> --- a/arch/x86/kernel/cpu/sgx/ioctl.c
> +++ b/arch/x86/kernel/cpu/sgx/ioctl.c
> @@ -66,9 +66,10 @@ static int sgx_encl_create(struct sgx_encl *encl, struct 
> sgx_secs *secs)
>       va_page = sgx_encl_grow(encl);
>       if (IS_ERR(va_page))
>               return PTR_ERR(va_page);
> -     else if (va_page)
> -             list_add(&va_page->list, &encl->va_pages);
> -     /* else the tail page of the VA page list had free slots. */
> +     if (!va_page)
> +             return -EIO;

Why this check?

> +
> +     list_add(&va_page->list, &encl->va_pages);
>  
>       /* The extra page goes to SECS. */
>       encl_size = secs->size + PAGE_SIZE;
> -- 
> 2.19.1.3.ge56e4f7
> 
> 

/Jarkko

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