linux-kernel - RE: [PATCH v2 2/2] mmc: block: add CMD13 polling for ioctl() cmd with R1B response

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Message-ID: <MN2PR04MB6991D9707092B671FB129DC0FCBB0@MN2PR04MB6991.namprd04.prod.outlook.com>
Date:   Thu, 5 Sep 2019 08:44:35 +0000
From:   Avri Altman <Avri.Altman@....com>
To:     Chaotian Jing <chaotian.jing@...iatek.com>,
        Ulf Hansson <ulf.hansson@...aro.org>
CC:     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 v2 2/2] mmc: block: add CMD13 polling for ioctl() cmd with
 R1B response


> 
> 
> currently there is no CMD13 polling and other code to wait card
> change to transfer state after R1B command completed. and this
> polling operation cannot do in user space, because other request
> may coming before the CMD13 from user space.
> 
> Signed-off-by: Chaotian Jing <chaotian.jing@...iatek.com>
Reviewed-by: Avri Altman <avri.altman@....com>