linux-kernel - RE: [PATCH 2/3] scsi: ufs: Keep device power on only fWriteBoosterBufferFlushDuringHibernate == 1

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Date:   Thu, 3 Dec 2020 07:27:28 +0000
From:   Avri Altman <Avri.Altman@....com>
To:     "alim.akhtar@...sung.com" <alim.akhtar@...sung.com>,
        "asutoshd@...eaurora.org" <asutoshd@...eaurora.org>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "stanley.chu@...iatek.com" <stanley.chu@...iatek.com>,
        "beanhuo@...ron.com" <beanhuo@...ron.com>,
        "bvanassche@....org" <bvanassche@....org>,
        "tomas.winkler@...el.com" <tomas.winkler@...el.com>,
        "cang@...eaurora.org" <cang@...eaurora.org>
CC:     "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 2/3] scsi: ufs: Keep device power on only
 fWriteBoosterBufferFlushDuringHibernate == 1

> 
> From: Bean Huo <beanhuo@...ron.com>
> 
> Keep device power mode as active power mode and VCC supply only if
> fWriteBoosterBufferFlushDuringHibernate setting 1 is successful.
Why would it fail?
Since UFSHCD_CAP_WB_EN is toggled off on ufshcd_wb_probe If the device doesn't support wb,
The check ufshcd_is_wb_allowed should suffice, isn't it?

Thanks,
Avri