linux-kernel - Re: [PATCH v2] scsi: ipr: Convert ipr_probe_ioa

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Message-ID: <6180bf1d-265e-8e77-c507-967ee103f80a@linux.vnet.ibm.com>
Date:   Tue, 21 Feb 2023 13:40:46 -0600
From:   Brian King <brking@...ux.vnet.ibm.com>
To:     Deepak R Varma <drv@...lo.com>, Brian King <brking@...ibm.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Saurabh Singh Sengar <ssengar@...rosoft.com>,
        Praveen Kumar <kumarpraveen@...ux.microsoft.com>
Subject: Re: [PATCH v2] scsi: ipr: Convert ipr_probe_ioa_part2 as void

On 1/8/23 10:28 AM, Deepak R Varma wrote:
> Convert function ipr_probe_ioa_part2() to return void instead
> of int since the current implementation always returns 0 to the caller.
> The transformation also eliminates the dead code when calling
> ipr_probe_ioa_part2() function.
> Issue identified using returnvar Coccinelle semantic patch.
> 
> Signed-off-by: Deepak R Varma <drv@...lo.com>
> ---
> Changes in v2:
>    - retain and update Return value comment in function documentation
> 
>  drivers/scsi/ipr.c | 13 +++----------
>  1 file changed, 3 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
> index 2022ffb45041..dfb759fbbd87 100644
> --- a/drivers/scsi/ipr.c
> +++ b/drivers/scsi/ipr.c
> @@ -9505,11 +9505,10 @@ static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
>   * This function takes care of initilizing the adapter to the point
>   * where it can accept new commands.
>   * Return value:
> - * 	0 on success / -EIO on failure
> + *     none
>   **/
> -static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
> +static void ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
>  {
> -	int rc = 0;
>  	unsigned long host_lock_flags = 0;
> 
>  	ENTER;
> @@ -9525,7 +9524,6 @@ static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
>  	spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
> 
>  	LEAVE;
> -	return rc;
>  }
> 
>  /**
> @@ -10568,12 +10566,7 @@ static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
>  		return rc;
> 
>  	ioa_cfg = pci_get_drvdata(pdev);
> -	rc = ipr_probe_ioa_part2(ioa_cfg);
> -
> -	if (rc) {
> -		__ipr_remove(pdev);
> -		return rc;
> -	}
> +	ipr_probe_ioa_part2(ioa_cfg);
> 
>  	rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
> 
> --
> 2.34.1

Acked-by: Brian King <brking@...ux.vnet.ibm.com>

-- 
Brian King
Power Linux I/O
IBM Linux Technology Center