From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Stanley Chu <stanley.chu@mediatek.com>,
jejb@linux.ibm.com, alim.akhtar@samsung.com, avri.altman@wdc.com,
linux-scsi@vger.kernel.org
Cc: "Martin K . Petersen" <martin.petersen@oracle.com>,
bvanassche@acm.org, cang@codeaurora.org, peter.wang@mediatek.com,
asutoshd@codeaurora.org, chun-hung.wu@mediatek.com,
alice.chao@mediatek.com, matthias.bgg@gmail.com,
chaotian.jing@mediatek.com, linux-kernel@vger.kernel.org,
linux-mediatek@lists.infradead.org, kuohong.wang@mediatek.com,
jiajie.hao@mediatek.com, linux-arm-kernel@lists.infradead.org,
andy.teng@mediatek.com, beanhuo@micron.com, cc.chou@mediatek.com
Subject: Re: [PATCH v1] scsi: ufs: Fix race between shutdown and runtime resume flow
Date: Thu, 19 Nov 2020 22:30:34 -0500 [thread overview]
Message-ID: <160584260540.532.6488395968913616505.b4-ty@oracle.com> (raw)
In-Reply-To: <20201119062916.12931-1-stanley.chu@mediatek.com>
On Thu, 19 Nov 2020 14:29:16 +0800, Stanley Chu wrote:
> If UFS host device is in runtime-suspended state while
> UFS shutdown callback is invoked, UFS device shall be
> resumed for register accesses. Currently only UFS local
> runtime resume function will be invoked to wake up the host.
> This is not enough because if someone triggers runtime
> resume from block layer, then race may happen between
> shutdown and runtime resume flow, and finally lead to
> unlocked register access.
>
> [...]
Applied to 5.10/scsi-fixes, thanks!
[1/1] scsi: ufs: Fix race between shutdown and runtime resume flow
https://git.kernel.org/mkp/scsi/c/e92643db5148
--
Martin K. Petersen Oracle Linux Engineering
WARNING: multiple messages have this Message-ID (diff)
From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Stanley Chu <stanley.chu@mediatek.com>,
jejb@linux.ibm.com, alim.akhtar@samsung.com, avri.altman@wdc.com,
linux-scsi@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org, bvanassche@acm.org,
"Martin K . Petersen" <martin.petersen@oracle.com>,
andy.teng@mediatek.com, beanhuo@micron.com,
chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com,
linux-kernel@vger.kernel.org, jiajie.hao@mediatek.com,
cang@codeaurora.org, linux-mediatek@lists.infradead.org,
peter.wang@mediatek.com, matthias.bgg@gmail.com,
alice.chao@mediatek.com, cc.chou@mediatek.com,
chaotian.jing@mediatek.com, asutoshd@codeaurora.org
Subject: Re: [PATCH v1] scsi: ufs: Fix race between shutdown and runtime resume flow
Date: Thu, 19 Nov 2020 22:30:34 -0500 [thread overview]
Message-ID: <160584260540.532.6488395968913616505.b4-ty@oracle.com> (raw)
In-Reply-To: <20201119062916.12931-1-stanley.chu@mediatek.com>
On Thu, 19 Nov 2020 14:29:16 +0800, Stanley Chu wrote:
> If UFS host device is in runtime-suspended state while
> UFS shutdown callback is invoked, UFS device shall be
> resumed for register accesses. Currently only UFS local
> runtime resume function will be invoked to wake up the host.
> This is not enough because if someone triggers runtime
> resume from block layer, then race may happen between
> shutdown and runtime resume flow, and finally lead to
> unlocked register access.
>
> [...]
Applied to 5.10/scsi-fixes, thanks!
[1/1] scsi: ufs: Fix race between shutdown and runtime resume flow
https://git.kernel.org/mkp/scsi/c/e92643db5148
--
Martin K. Petersen Oracle Linux Engineering
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
WARNING: multiple messages have this Message-ID (diff)
From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Stanley Chu <stanley.chu@mediatek.com>,
jejb@linux.ibm.com, alim.akhtar@samsung.com, avri.altman@wdc.com,
linux-scsi@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org, bvanassche@acm.org,
"Martin K . Petersen" <martin.petersen@oracle.com>,
andy.teng@mediatek.com, beanhuo@micron.com,
chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com,
linux-kernel@vger.kernel.org, jiajie.hao@mediatek.com,
cang@codeaurora.org, linux-mediatek@lists.infradead.org,
peter.wang@mediatek.com, matthias.bgg@gmail.com,
alice.chao@mediatek.com, cc.chou@mediatek.com,
chaotian.jing@mediatek.com, asutoshd@codeaurora.org
Subject: Re: [PATCH v1] scsi: ufs: Fix race between shutdown and runtime resume flow
Date: Thu, 19 Nov 2020 22:30:34 -0500 [thread overview]
Message-ID: <160584260540.532.6488395968913616505.b4-ty@oracle.com> (raw)
In-Reply-To: <20201119062916.12931-1-stanley.chu@mediatek.com>
On Thu, 19 Nov 2020 14:29:16 +0800, Stanley Chu wrote:
> If UFS host device is in runtime-suspended state while
> UFS shutdown callback is invoked, UFS device shall be
> resumed for register accesses. Currently only UFS local
> runtime resume function will be invoked to wake up the host.
> This is not enough because if someone triggers runtime
> resume from block layer, then race may happen between
> shutdown and runtime resume flow, and finally lead to
> unlocked register access.
>
> [...]
Applied to 5.10/scsi-fixes, thanks!
[1/1] scsi: ufs: Fix race between shutdown and runtime resume flow
https://git.kernel.org/mkp/scsi/c/e92643db5148
--
Martin K. Petersen Oracle Linux Engineering
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-11-20 3:31 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-19 6:29 [PATCH v1] scsi: ufs: Fix race between shutdown and runtime resume flow Stanley Chu
2020-11-19 6:29 ` Stanley Chu
2020-11-19 6:29 ` Stanley Chu
2020-11-19 7:14 ` Can Guo
2020-11-19 7:14 ` Can Guo
2020-11-20 3:30 ` Martin K. Petersen [this message]
2020-11-20 3:30 ` Martin K. Petersen
2020-11-20 3:30 ` 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=160584260540.532.6488395968913616505.b4-ty@oracle.com \
--to=martin.petersen@oracle.com \
--cc=alice.chao@mediatek.com \
--cc=alim.akhtar@samsung.com \
--cc=andy.teng@mediatek.com \
--cc=asutoshd@codeaurora.org \
--cc=avri.altman@wdc.com \
--cc=beanhuo@micron.com \
--cc=bvanassche@acm.org \
--cc=cang@codeaurora.org \
--cc=cc.chou@mediatek.com \
--cc=chaotian.jing@mediatek.com \
--cc=chun-hung.wu@mediatek.com \
--cc=jejb@linux.ibm.com \
--cc=jiajie.hao@mediatek.com \
--cc=kuohong.wang@mediatek.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mediatek@lists.infradead.org \
--cc=linux-scsi@vger.kernel.org \
--cc=matthias.bgg@gmail.com \
--cc=peter.wang@mediatek.com \
--cc=stanley.chu@mediatek.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.