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From: Hannes Reinecke <hare@suse.de>
To: Christoph Hellwig <hch@lst.de>, John Garry <john.garry@huawei.com>
Cc: martin.petersen@oracle.com, brking@us.ibm.com,
	jinpu.wang@cloud.ionos.com, mpe@ellerman.id.au,
	linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org
Subject: Re: fix ATAPI support for libsas drivers
Date: Mon, 22 Jun 2020 08:28:14 +0200	[thread overview]
Message-ID: <bed58e53-2019-cbb6-2ebe-93d0e404c90a@suse.de> (raw)
In-Reply-To: <20200618152848.GA30919@lst.de>

On 6/18/20 5:28 PM, Christoph Hellwig wrote:
> On Thu, Jun 18, 2020 at 10:02:58AM +0100, John Garry wrote:
>> On 15/06/2020 07:46, Christoph Hellwig wrote:
>>> Hi all,
>>>
>>> this series fixes the ATAPI DMA drain refactoring for SAS HBAs that
>>> use libsas.
>>> .
>>>
>>
>> Something I meant to ask before and was curious about, specifically since
>> ipr doesn't actually use libsas: Why not wire up other SAS HBAs, like
>> megaraid_sas?
> 
> megaraid_sas and mpt3sas don't use the libata code at all.  ipr actually
> is a special case and uses libata directly instead of libsas (something
> I hadn't realized, but which doesn't change anything for the patches
> itself, just possibly the commit log).
> 
More to the point, megaraid_sas and mpt3sas have their own SATL in 
firmware so there is no need to use libata here.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke            Teamlead Storage & Networking
hare@suse.de                               +49 911 74053 688
SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer

  reply	other threads:[~2020-06-22 14:26 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-15  6:46 fix ATAPI support for libsas drivers Christoph Hellwig
2020-06-15  6:46 ` [PATCH 1/2] libata: provide a ata_scsi_dma_need_drain stub for !CONFIG_ATA Christoph Hellwig
2020-06-16  3:46   ` Martin K. Petersen
2020-06-15  6:46 ` [PATCH 2/2] scsi: wire up ata_scsi_dma_need_drain for SAS HBA drivers Christoph Hellwig
2020-06-18  9:02 ` fix ATAPI support for libsas drivers John Garry
2020-06-18 15:28   ` Christoph Hellwig
2020-06-22  6:28     ` Hannes Reinecke [this message]
2020-06-23 11:44       ` John Garry

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