linux-kernel - Re: [PATCH] scsi: ufs: Fix NOP OUT timeout value

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Message-ID: <yq15z8e37e7.fsf@ca-mkp.ca.oracle.com>
Date:   Tue, 15 Sep 2020 20:14:15 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Daejun Park <daejun7.park@...sung.com>
Cc:     "avri.altman@....com" <avri.altman@....com>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "asutoshd@...eaurora.org" <asutoshd@...eaurora.org>,
        "beanhuo@...ron.com" <beanhuo@...ron.com>,
        "stanley.chu@...iatek.com" <stanley.chu@...iatek.com>,
        "cang@...eaurora.org" <cang@...eaurora.org>,
        "bvanassche@....org" <bvanassche@....org>,
        ALIM AKHTAR <alim.akhtar@...sung.com>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Sang-yoon Oh <sangyoon.oh@...sung.com>,
        Sung-Jun Park <sungjun07.park@...sung.com>,
        yongmyung lee <ymhungry.lee@...sung.com>,
        Jinyoung CHOI <j-young.choi@...sung.com>,
        Adel Choi <adel.choi@...sung.com>,
        SEUNGUK SHIN <seunguk.shin@...sung.com>
Subject: Re: [PATCH] scsi: ufs: Fix NOP OUT timeout value


Daejun,

> In some Samsung UFS devices, there is some booting fail issue with
> low-power UFS device. The reason of this issue is the UFS device has a
> little bit longer latency for NOP OUT response. It causes booting fail
> because NOP OUT command is issued during initialization to check whether
> the device transport protocol is ready or not. This issue is resolved by
> releasing NOP_OUT_TIMEOUT value.

Applied to 5.10/scsi-staging, thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering