linux-kernel - Re: [PATCH v3 5/8] scsi: hisi_sas: use sas_find_attathed

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Message-ID: <6654484e-70ce-d34f-ec48-44b0eb2bd0a5@opensource.wdc.com>
Date:   Tue, 27 Sep 2022 11:28:05 +0900
From:   Damien Le Moal <damien.lemoal@...nsource.wdc.com>
To:     Jason Yan <yanaijie@...wei.com>, martin.petersen@...cle.com,
        jejb@...ux.ibm.com
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        hare@...e.com, hch@....de, bvanassche@....org,
        john.garry@...wei.com, jinpu.wang@...ud.ionos.com,
        Jack Wang <jinpu.wang@...os.com>
Subject: Re: [PATCH v3 5/8] scsi: hisi_sas: use sas_find_attathed_phy()
 instead of open coded

On 9/27/22 11:29, Jason Yan wrote:
> The attached phy finding is open coded. Now we can replace it with
> sas_find_attached_phy().
> 
> Signed-off-by: Jason Yan <yanaijie@...wei.com>
> Reviewed-by: Jack Wang <jinpu.wang@...os.com>

Reviewed-by: Damien Le Moal <damien.lemoal@...nsource.wdc.com>

> ---
>  drivers/scsi/hisi_sas/hisi_sas_main.c | 12 ++----------
>  1 file changed, 2 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
> index 33af5b8dede2..995ccb13fb9d 100644
> --- a/drivers/scsi/hisi_sas/hisi_sas_main.c
> +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
> @@ -792,17 +792,9 @@ static int hisi_sas_dev_found(struct domain_device *device)
>  
>  	if (parent_dev && dev_is_expander(parent_dev->dev_type)) {
>  		int phy_no;
> -		u8 phy_num = parent_dev->ex_dev.num_phys;
> -		struct ex_phy *phy;
>  
> -		for (phy_no = 0; phy_no < phy_num; phy_no++) {
> -			phy = &parent_dev->ex_dev.ex_phy[phy_no];
> -			if (SAS_ADDR(phy->attached_sas_addr) ==
> -				SAS_ADDR(device->sas_addr))
> -				break;
> -		}
> -
> -		if (phy_no == phy_num) {
> +		phy_no = sas_find_attached_phy(&parent_dev->ex_dev, device);
> +		if (phy_no == -ENODEV) {
>  			dev_info(dev, "dev found: no attached "
>  				 "dev:%016llx at ex:%016llx\n",
>  				 SAS_ADDR(device->sas_addr),

-- 
Damien Le Moal
Western Digital Research