From: Avri Altman <Avri.Altman@wdc.com>
To: Asutosh Das <asutoshd@codeaurora.org>,
"cang@codeaurora.org" <cang@codeaurora.org>,
"martin.petersen@oracle.com" <martin.petersen@oracle.com>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>
Cc: "linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
"stern@rowland.harvard.edu" <stern@rowland.harvard.edu>
Subject: RE: [RFC PATCH v2 0/2] Fix deadlock in ufs
Date: Thu, 28 Jan 2021 09:33:21 +0000 [thread overview]
Message-ID: <DM6PR04MB657580F21E8474678D27D88FFCBA9@DM6PR04MB6575.namprd04.prod.outlook.com> (raw)
In-Reply-To: <cover.1611719814.git.asutoshd@codeaurora.org>
Hi,
Asking again:
Following your 1/2 patch, shouldn't this series revert commit 74e5e468b664d as well?
Thanks,
Avri
> v1 -> v2
> Use pm_runtime_get/put APIs.
> Assuming that all bsg devices are scsi devices may break.
>
> This patchset attempts to fix a deadlock in ufs.
> This deadlock occurs because the ufs host driver tries to resume
> its child (wlun scsi device) to send SSU to it during its suspend.
>
> Asutosh Das (2):
> block: bsg: resume scsi device before accessing
> scsi: ufs: Fix deadlock while suspending ufs host
>
> block/bsg.c | 8 ++++++++
> drivers/scsi/ufs/ufshcd.c | 18 ++----------------
> 2 files changed, 10 insertions(+), 16 deletions(-)
>
> --
> Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux
> Foundation Collaborative Project.
next prev parent reply other threads:[~2021-01-28 9:36 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-27 4:00 [RFC PATCH v1 0/2] Fix deadlock in ufs Asutosh Das
2021-01-28 3:26 ` [RFC PATCH v2 " Asutosh Das
2021-01-27 4:00 ` [RFC PATCH v1 1/2] block: bsg: resume scsi device before accessing Asutosh Das
2021-01-27 7:09 ` Avri Altman
2021-01-27 7:59 ` Can Guo
2021-01-27 8:53 ` Can Guo
2021-02-07 2:23 ` Bart Van Assche
2021-01-27 4:00 ` [RFC PATCH v1 2/2] scsi: ufs: Fix deadlock while suspending ufs host Asutosh Das
2021-01-27 15:22 ` [RFC PATCH v1 0/2] Fix deadlock in ufs Bjorn Andersson
2021-01-27 16:16 ` Asutosh Das
2021-01-27 19:36 ` Bjorn Andersson
2021-01-28 2:47 ` Can Guo
2021-01-28 3:26 ` [RFC PATCH v2 1/2] block: bsg: resume platform device before accessing Asutosh Das
2021-01-28 3:26 ` [RFC PATCH v2 2/2] scsi: ufs: Fix deadlock while suspending ufs host Asutosh Das
2021-01-28 12:21 ` Avri Altman
2021-01-28 16:39 ` Asutosh Das
2021-01-28 9:33 ` Avri Altman [this message]
2021-01-28 17:19 ` [RFC PATCH v2 0/2] Fix deadlock in ufs Asutosh Das
2021-02-01 20:11 ` Asutosh Das (asd)
2021-02-01 20:27 ` Bart Van Assche
2021-02-01 21:48 ` Alan Stern
2021-02-02 20:52 ` Asutosh Das
2021-02-02 22:05 ` Alan Stern
2021-02-04 0:13 ` Asutosh Das
2021-02-04 19:48 ` Alan Stern
2021-02-04 21:14 ` Asutosh Das
2021-02-05 7:56 ` Avri Altman
2021-02-05 16:11 ` Asutosh Das
2021-02-06 2:37 ` Asutosh Das
2021-02-06 19:24 ` Avri Altman
2021-02-08 16:24 ` Asutosh Das
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