linux-kernel - RE: [RFC PATCH v2 2/2] scsi: ufs: Fix deadlock while suspending ufs host

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Date:   Thu, 28 Jan 2021 12:21:32 +0000
From:   Avri Altman <Avri.Altman@....com>
To:     Asutosh Das <asutoshd@...eaurora.org>,
        "cang@...eaurora.org" <cang@...eaurora.org>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>
CC:     "linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
        "stern@...land.harvard.edu" <stern@...land.harvard.edu>,
        "Bao D . Nguyen" <nguyenb@...eaurora.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Stanley Chu <stanley.chu@...iatek.com>,
        Bean Huo <beanhuo@...ron.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: RE: [RFC PATCH v2 2/2] scsi: ufs: Fix deadlock while suspending ufs
 host

> 
> During runtime-suspend of ufs host, the scsi devices are
> already suspended and so are the queues associated with them.
> But the ufs host sends SSU to wlun during its runtime-suspend.
Do you possible meant: "sends request-sense while clearing UAC to...."

Thanks,
Avri