From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: John Garry <john.garry@huawei.com>
Cc: <jejb@linux.vnet.ibm.com>, <martin.petersen@oracle.com>,
<linux-scsi@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linuxarm@huawei.com>
Subject: Re: [PATCH] scsi: libsas: fix ata xfer length
Date: Sun, 19 Mar 2017 13:21:52 -0400 [thread overview]
Message-ID: <yq160j5ji6n.fsf@oracle.com> (raw)
In-Reply-To: <1489676848-103256-1-git-send-email-john.garry@huawei.com> (John Garry's message of "Thu, 16 Mar 2017 23:07:28 +0800")
John Garry <john.garry@huawei.com> writes:
John,
> The total ata xfer length may not be calculated properly,
> in that we do not use the proper method to get an sg element
> dma length.
>
> According to the code comment, sg_dma_len() should be used
> after dma_map_sg() is called.
>
> This issue was found by turning on the SMMUv3 in front of
> the hisi_sas controller in hip07. Multiple sg elements
> were being combined into a single element, but the original
> first element length was being use as the total xfer length.
Applied to 4.11/scsi-fixes.
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2017-03-19 17:22 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-16 15:07 [PATCH] scsi: libsas: fix ata xfer length John Garry
2017-03-19 17:21 ` Martin K. Petersen [this message]
2017-03-20 8:59 ` John Garry
2017-03-20 14:21 ` Martin K. Petersen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=yq160j5ji6n.fsf@oracle.com \
--to=martin.petersen@oracle.com \
--cc=jejb@linux.vnet.ibm.com \
--cc=john.garry@huawei.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=linuxarm@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).