linux-kernel - RE: [PATCH v7 05/10] scsi: ufs: add quirk to fix abnormal ocs fatal error

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Date:   Mon, 27 Apr 2020 07:54:03 +0000
From:   Avri Altman <Avri.Altman@....com>
To:     Alim Akhtar <alim.akhtar@...sung.com>,
        "robh@...nel.org" <robh@...nel.org>
CC:     "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "krzk@...nel.org" <krzk@...nel.org>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "kwmad.kim@...sung.com" <kwmad.kim@...sung.com>,
        "stanley.chu@...iatek.com" <stanley.chu@...iatek.com>,
        "cang@...eaurora.org" <cang@...eaurora.org>,
        "linux-samsung-soc@...r.kernel.org" 
        <linux-samsung-soc@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v7 05/10] scsi: ufs: add quirk to fix abnormal ocs fatal
 error

 
> From: Kiwoong Kim <kwmad.kim@...sung.com>
> 
> Some controller like Exynos determines if FATAL ERROR (0x7)
> in OCS field in UTRD occurs for values other than GOOD (0x0)
> in STATUS field in response upiu as well as errors that a
> host controller can't cover.
> This patch is to prevent from reporting command results in
> those cases.
> 
> Signed-off-by: Kiwoong Kim <kwmad.kim@...sung.com>
> Signed-off-by: Alim Akhtar <alim.akhtar@...sung.com>
Reviewed-by: Avri Altman <avri.altman@....com>