linux-kernel - Re: [PATCH 2/3] staging: erofs: unzip_vle.c: Constant in comparison on right side

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Date:   Tue, 13 Nov 2018 08:02:40 +0800
From:   Gao Xiang <gaoxiang25@...wei.com>
To:     Cristian Sicilia <sicilia.cristian@...il.com>,
        Chao Yu <yuchao0@...wei.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <linux-erofs@...ts.ozlabs.org>
CC:     <devel@...verdev.osuosl.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] staging: erofs: unzip_vle.c: Constant in comparison
 on right side



On 2018/11/13 4:43, Cristian Sicilia wrote:
> Comparisons should place the constant
> on the right side of the test.
> 
> Signed-off-by: Cristian Sicilia <sicilia.cristian@...il.com>

Reviewed-by: Gao Xiang <gaoxiang25@...wei.com>

Thanks,
Gao Xiang

> ---
>  drivers/staging/erofs/unzip_vle.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/staging/erofs/unzip_vle.c b/drivers/staging/erofs/unzip_vle.c
> index 1ffeeaa..35add4e 100644
> --- a/drivers/staging/erofs/unzip_vle.c
> +++ b/drivers/staging/erofs/unzip_vle.c
> @@ -250,8 +250,8 @@ static inline bool try_to_claim_workgroup(
>  retry:
>  	if (grp->next == Z_EROFS_VLE_WORKGRP_NIL) {
>  		/* type 1, nil workgroup */
> -		if (Z_EROFS_VLE_WORKGRP_NIL != cmpxchg(&grp->next,
> -			Z_EROFS_VLE_WORKGRP_NIL, *owned_head))
> +		if (cmpxchg(&grp->next, Z_EROFS_VLE_WORKGRP_NIL,
> +			    *owned_head) != Z_EROFS_VLE_WORKGRP_NIL)
>  			goto retry;
>  
>  		*owned_head = grp;
> @@ -262,8 +262,8 @@ static inline bool try_to_claim_workgroup(
>  		 * be careful that its submission itself is governed
>  		 * by the original owned chain.
>  		 */
> -		if (Z_EROFS_VLE_WORKGRP_TAIL != cmpxchg(&grp->next,
> -			Z_EROFS_VLE_WORKGRP_TAIL, *owned_head))
> +		if (cmpxchg(&grp->next, Z_EROFS_VLE_WORKGRP_TAIL,
> +			    *owned_head) != Z_EROFS_VLE_WORKGRP_TAIL)
>  			goto retry;
>  
>  		*owned_head = Z_EROFS_VLE_WORKGRP_TAIL;
>