Date:   Wed, 1 Mar 2023 20:21:09 -0600
From:   Bjorn Andersson <andersson@kernel.org>
To:     Asutosh Das <quic_asutoshd@quicinc.com>
Cc:     quic_cang@quicinc.com, martin.petersen@oracle.com,
        linux-scsi@vger.kernel.org, quic_nguyenb@quicinc.com,
        quic_xiaosenh@quicinc.com, stanley.chu@mediatek.com,
        adrian.hunter@intel.com, bvanassche@acm.org, avri.altman@wdc.com,
        mani@kernel.org, beanhuo@micron.com, linux-arm-msm@vger.kernel.org,
        Andy Gross <agross@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        "James E.J. Bottomley" <jejb@linux.ibm.com>,
        open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 1/1] ufs: mcq: qcom: Fix passing zero to PTR_ERR
Message-ID: <20230302022109.uhmwbscg4mtofydd@baldur>
References: <94ca99b327af634799ce5f25d0112c28cd00970d.1677721072.git.quic_asutoshd@quicinc.com>
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On Wed, Mar 01, 2023 at 05:41:06PM -0800, Asutosh Das wrote:
> Fix an error case in ufs_qcom_mcq_config_resource(), where the
> return value is set to 0 before passing it to PTR_ERR.
> 
> This led to Smatch warning:
> drivers/ufs/host/ufs-qcom.c:1455 ufs_qcom_mcq_config_resource() warn:
> passing zero to 'PTR_ERR'
> 
> Fixes: c263b4ef737e ("scsi: ufs: core: mcq: Configure resource regions")
> Reported-by: Dan Carpenter <error27@gmail.com>
> Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>

Reviewed-by: Bjorn Andersson <andersson@kernel.org>

> 
> --
> v1 -> v2
> - Split to 2 patches
> - Addressed Mani's comments
> --
> ---
>  drivers/ufs/host/ufs-qcom.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
> index 34fc453f3eb1..43b1fc1ad33e 100644
> --- a/drivers/ufs/host/ufs-qcom.c
> +++ b/drivers/ufs/host/ufs-qcom.c
> @@ -1451,8 +1451,8 @@ static int ufs_qcom_mcq_config_resource(struct ufs_hba *hba)
>  		if (IS_ERR(res->base)) {
>  			dev_err(hba->dev, "Failed to map res %s, err=%d\n",
>  					 res->name, (int)PTR_ERR(res->base));
> -			res->base = NULL;
>  			ret = PTR_ERR(res->base);
> +			res->base = NULL;
>  			return ret;
>  		}
>  	}
> -- 
> 2.7.4
>