From: Kiwoong Kim <kwmad.kim@samsung.com>
To: adrian.hunter@intel.com
Cc: alim.akhtar@samsung.com, asutoshd@codeaurora.org,
avri.altman@wdc.com, bvanassche@acm.org, cang@codeaurora.org,
huobean@gmail.com, jejb@linux.ibm.com,
linux-scsi@vger.kernel.org, liwei213@huawei.com,
manivannan.sadhasivam@linaro.org, martin.petersen@oracle.com,
Kiwoong Kim <kwmad.kim@samsung.com>
Subject: Re: [PATCH V5 1/3] scsi: ufs: Fix error handler clear ua deadlock
Date: Wed, 29 Sep 2021 14:01:31 +0900 [thread overview]
Message-ID: <1632891691-17109-1-git-send-email-kwmad.kim@samsung.com> (raw)
In-Reply-To: <20210922093842.18025-2-adrian.hunter@intel.com>
(I post this again because this isn't attached to the mail thread)
UFSHCI specifies Data Byte Count (DBC) like this:
A '0' based value that indicates the length, in bytes, of the data
block. A maximum of length of 256KB may exist for any entry. Bits 1:0 of this
field shall be 11b to indicate Dword granularity.
A value of '3' indicates 4 bytes, '7' indicates 8 bytes, etc.
That means the size value should be aligned with 4. And as I know it's 18.
Yes, its buffer is enough but if a host doesn't access memory with four-byte
alignment, it could cause problems.
Thanks.
Kiwoong Kim
next prev parent reply other threads:[~2021-09-29 5:18 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-22 9:38 [PATCH V5 0/3] scsi: ufs: Let devices remain runtime suspended during system suspend Adrian Hunter
2021-09-22 9:38 ` [PATCH V5 1/3] scsi: ufs: Fix error handler clear ua deadlock Adrian Hunter
[not found] ` <CGME20210928071133epcas2p28e00e20bbebbb5c1920933204f91743b@epcas2p2.samsung.com>
2021-09-28 6:55 ` Kiwoong Kim
2021-09-30 12:44 ` Adrian Hunter
[not found] ` <CGME20210929051745epcas2p1024eb171d57dca361d2d3d522683770d@epcas2p1.samsung.com>
2021-09-29 5:01 ` Kiwoong Kim [this message]
2021-09-30 12:43 ` Adrian Hunter
2021-09-22 9:38 ` [PATCH V5 2/3] scsi: ufs: Fix runtime PM dependencies getting broken Adrian Hunter
2021-09-22 9:38 ` [PATCH V5 3/3] scsi: ufs: Let devices remain runtime suspended during system suspend Adrian Hunter
2021-09-22 16:15 ` Asutosh Das (asd)
[not found] <CGME20210928064756epcas2p3975b89e0cecd0ca1807b354bafadccd3@epcas2p3.samsung.com>
2021-09-28 6:47 ` [PATCH V5 1/3] scsi: ufs: Fix error handler clear ua deadlock Kiwoong Kim
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