linux-kernel - Re: [PATCH v2] ata: libata-scsi: Fix get identity data failed

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Date:   Sat, 6 May 2023 17:49:00 +0800
From:   yangxingui <yangxingui@...wei.com>
To:     Jason Yan <yanaijie@...wei.com>,
        John Garry <john.g.garry@...cle.com>,
        Damien Le Moal <dlemoal@...nel.org>, <jejb@...ux.ibm.com>,
        <martin.petersen@...cle.com>, <damien.lemoal@...nsource.wdc.com>
CC:     <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linuxarm@...wei.com>, <prime.zeng@...ilicon.com>,
        <kangfenglong@...wei.com>
Subject: Re: [PATCH v2] ata: libata-scsi: Fix get identity data failed



On 2023/5/6 10:11, Jason Yan wrote:
> On 2023/5/5 17:14, yangxingui wrote:
>>
>>
>> On 2023/5/5 16:25, John Garry wrote:
>>> On 05/05/2023 09:17, Damien Le Moal wrote:
>>>>> --- a/drivers/ata/libata-scsi.c
>>>>> +++ b/drivers/ata/libata-scsi.c
>>>>> @@ -26,6 +26,7 @@
>>>>>   #include <scsi/scsi_device.h>
>>>>>   #include <scsi/scsi_tcq.h>
>>>>>   #include <scsi/scsi_transport.h>
>>>>> +#include <scsi/libsas.h>
>>>
>>> hmmm... is it really acceptable that libata is referencing libsas? I 
>>> didn't think that it would be. libsas uses libata, not the other way 
>>> around.
>> Yeah, I didn't expect that either. Is there any other way? If so, is 
>> patch v1 OK?
> 
> Hi Xingui,
> 
> Libsas should follow the standard way of libata to manage the ata 
> structures. Not the opposite way. So what you should do is to find a way 
> for libsas to behave as a normal ata driver. It's not good to make 
> libata aware of libsas or referencing libsas.
> 
> If you have detailed questions you can ask me internally(which will be 
> faster) or publicly through the maillist(which may have some delay).
> 
ok

Thanks,
Xingui
.
> Thanks,
> Jason
> .