linux-kernel - Re: [PATCH -next] scsi: qla2xxx: Use PTR_ERR_OR

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Message-ID: <5693adb3-8f5c-efcc-8e63-38a8311c90b9@acm.org>
Date:   Wed, 6 May 2020 08:42:12 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     Samuel Zou <zou_wei@...wei.com>, njavali@...vell.com,
        GR-QLogic-Storage-Upstream@...vell.com, jejb@...ux.ibm.com,
        martin.petersen@...cle.com
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] scsi: qla2xxx: Use PTR_ERR_OR_ZERO() to simplify
 code

On 2020-05-06 00:54, Samuel Zou wrote:
> Fixes coccicheck warning:
> 
> drivers/scsi/qla2xxx/tcm_qla2xxx.c:1488:1-3: WARNING: PTR_ERR_OR_ZERO can be used
> 
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Samuel Zou <zou_wei@...wei.com>
> ---
>  drivers/scsi/qla2xxx/tcm_qla2xxx.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
> index 1f0a185..7c4157e 100644
> --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
> +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
> @@ -1485,10 +1485,8 @@ static int tcm_qla2xxx_check_initiator_node_acl(
>  				       sizeof(struct qla_tgt_cmd),
>  				       TARGET_PROT_ALL, port_name,
>  				       qlat_sess, tcm_qla2xxx_session_cb);
> -	if (IS_ERR(se_sess))
> -		return PTR_ERR(se_sess);
>  
> -	return 0;
> +	return PTR_ERR_OR_ZERO(se_sess);
>  }

Can the Hulk check that verifies where PTR_ERR_OR_ZERO() can be
introduced be deactivated? I think this patch makes the code less
readable instead of making it more readable.

Thanks,

Bart.