linux-kernel - RE: [PATCH 2/2] mmc: block: add CMD13 polling for ioctl() cmd with R1B response

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Date:   Thu, 5 Sep 2019 06:21:07 +0000
From:   Avri Altman <Avri.Altman@....com>
To:     Chaotian Jing <chaotian.jing@...iatek.com>
CC:     Ulf Hansson <ulf.hansson@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Jens Axboe <axboe@...nel.dk>, Hannes Reinecke <hare@...e.de>,
        YueHaibing <yuehaibing@...wei.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Ming Lei <ming.lei@...hat.com>, Chris Boot <bootc@...tc.net>,
        Zachary Hays <zhays@...mark.com>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        "srv_heupstream@...iatek.com" <srv_heupstream@...iatek.com>
Subject: RE: [PATCH 2/2] mmc: block: add CMD13 polling for ioctl() cmd with
 R1B response

 
> On Wed, 2019-09-04 at 14:11 +0000, Avri Altman wrote:
> > >  static int __mmc_blk_ioctl_cmd(struct mmc_card *card, struct
> > > mmc_blk_data *md,
> > >                                struct mmc_blk_ioc_data *idata)
> > >  {
> > > @@ -623,6 +675,9 @@ static int __mmc_blk_ioctl_cmd(struct
> mmc_card
> > > *card, struct mmc_blk_data *md,
> > >                                         __func__, status, err);
> > >         }
> > >
> > > +       if (!err && (cmd.flags & MMC_RSP_R1B))
> > > +               err = card_busy_detect(card, MMC_BLK_TIMEOUT_MS,
> NULL);
> > > +
> > >         return err;
> > >  }
> > You have both the R1B flag check, and status poll (for rpmb) few line
> above.
> > Maybe you could re-use it.
> > It will both simplify this patch, and save the tad optimization of your
> first patch.
> >
> > Thanks,
> > Avri
> 
> So that we can drop the ioctl_rpmb_card_status_poll() as it do almost
> the same thing with card_busy_detect().
> 
right