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

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Message-ID: <231786897.01600154101631.JavaMail.epsvc@epcpadp1>
Date:   Tue, 15 Sep 2020 16:08:22 +0900
From:   Daejun Park <daejun7.park@...sung.com>
To:     Avri Altman <Avri.Altman@....com>,
        Daejun Park <daejun7.park@...sung.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>
CC:     "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

Hi Avri,

> > 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.
> > 
> > NOP_OUT_TIMEOUT: 30ms -> 50ms
> > 
> > Signed-off-by: Daejun Park <daejun7.park@...sung.com>
> Acked-by: Avri Altman <avri.altman@....com>

Thanks for the review.

Bart,
Could you review this patch, please?

Thanks,
Daejun