linux-kernel - RE: [PATCH v2 3/3] mmc: core: Add discard support to sd

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Date:   Sun, 24 Feb 2019 07:08:00 +0000
From:   Avri Altman <Avri.Altman@....com>
To:     Ulf Hansson <ulf.hansson@...aro.org>
CC:     "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Jaehoon Chung <jh80.chung@...sung.com>,
        Shawn Lin <shawn.lin@...k-chips.com>,
        Avi Shchislowski <Avi.Shchislowski@....com>,
        Alex Lemberg <Alex.Lemberg@....com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2 3/3] mmc: core: Add discard support to sd

> >
> > On Wed, 6 Feb 2019 at 12:29, Avri Altman <avri.altman@....com> wrote:
> > >
> > > SD spec v5.1 adds discard support. The flows and commands are similar
> to
> > > mmc, so just set the discard arg in CMD38.
> > >
> > > Actually, there is no need to check for the spec version like we are
> > > doing, as it is assured that the reserved bits in earlier versions are
> > > null. Do that anyway to document the spec version that introduce it.
> > >
> > > Signed-off-by: Avri Altman <avri.altman@....com>
> >
> > Deferring this a bit, need some more time to review.
> A kind reminder.
A gentle ping.

Thanks,
Avri

> Thanks,
> Avri