linux-kernel - Re: [PATCH 6/7] scsi: pm8001: use dev_and_phy_addr

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Message-ID: <0034eff3-70a5-becb-0821-f9c36371e6d9@huawei.com>
Date:   Thu, 22 Sep 2022 15:24:30 +0100
From:   John Garry <john.garry@...wei.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>,
        <jinpu.wang@...ud.ionos.com>
Subject: Re: [PATCH 6/7] scsi: pm8001: use dev_and_phy_addr_same() instead of
 open coded

On 17/09/2022 11:43, Jason Yan wrote:
> The sas address comparation of domain device and expander phy is open
> coded. Now we can replace it with dev_and_phy_addr_same().
> 
> Signed-off-by: Jason Yan <yanaijie@...wei.com>
> ---
>   drivers/scsi/pm8001/pm8001_sas.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
> index 8e3f2f9ddaac..bb1b1722f3ee 100644
> --- a/drivers/scsi/pm8001/pm8001_sas.c
> +++ b/drivers/scsi/pm8001/pm8001_sas.c
> @@ -649,8 +649,7 @@ static int pm8001_dev_found_notify(struct domain_device *dev)
>   		for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys;

This code seems the same between many libsas LLDDs - could we factor it 
out into libsas? If so, then maybe those new helpers could be put in 
sas_internal.h

Thanks,
John

>   		phy_id++) {
>   			phy = &parent_dev->ex_dev.ex_phy[phy_id];
> -			if (SAS_ADDR(phy->attached_sas_addr)
> -				== SAS_ADDR(dev->sas_addr)) {
> +			if (dev_and_phy_addr_same(dev, phy)) {
>   				pm8001_device->attached_phy = phy_id;
>   				break;
>   			}