linux-kernel - Re: [PATCH v5 1/2] scsi: ufs: Do not disable vccq in UFSHC driver

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Message-ID: <yq1ftsad2yi.fsf@oracle.com>
Date:   Tue, 26 Feb 2019 09:44:21 -0500
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Marc Gonzalez <marc.w.gonzalez@...e.fr>
Cc:     SCSI <linux-scsi@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Jeffrey Hugo <jhugo@...eaurora.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Evan Green <evgreen@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        Pedro Sousa <pedrom.sousa@...opsys.com>,
        Joao Pinto <jpinto@...opsys.com>,
        Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Bart Van Assche <bart.vanassche@....com>,
        Stanislav Nijnikov <stanislav.nijnikov@....com>,
        Alex Lemberg <alex.lemberg@....com>,
        Ohad Sharabi <ohad.sharabi@....com>,
        Venkat Gopalakrishnan <venkatg@...eaurora.org>,
        Subhash Jadavani <subhashj@...eaurora.org>,
        Yaniv Gardi <ygardi@...eaurora.org>,
        Gilad Broner <gbroner@...eaurora.org>,
        Raviv Shvili <rshvili@...eaurora.org>,
        Hannes Reinecke <hare@...e.de>, Kyuho Choi <kyuho.choi@...com>,
        Martin Petersen <martin.petersen@...cle.com>
Subject: Re: [PATCH v5 1/2] scsi: ufs: Do not disable vccq in UFSHC driver


Hi Marc,

> Commit 60f0187031c0 ("disable vccq if it's not needed by UFS device")
> introduced a small power optimization as a driver quirk: ignore the
> vccq load specified in the UFSHC DT node when said host controller
> is connected to specific Flash chips (Samsung and Hynix currently).

[...]

> Revert the original patch, and clean up loose ends in the next patch.

This commit isn't a revert. Why not?

-- 
Martin K. Petersen	Oracle Linux Engineering