linux-kernel - RE: [PATCH V1] mmc: core: fix still flush cache when eMMC cache off

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Date:   Wed, 22 Mar 2017 17:31:05 +0000
From:   "Bean Huo (beanhuo)" <beanhuo@...ron.com>
To:     "ulf.hansson@...aro.org" <ulf.hansson@...aro.org>
CC:     "linus.walleij@...aro.org" <linus.walleij@...aro.org>,
        "shawn.lin@...k-chips.com" <shawn.lin@...k-chips.com>,
        "adrian.hunter@...el.com" <adrian.hunter@...el.com>,
        "axboe@...com" <axboe@...com>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Zoltan Szubbocsev (zszubbocsev)" <zszubbocsev@...ron.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: RE: [PATCH V1] mmc: core: fix still flush cache when eMMC cache off

Ping Linux-mmc maintainer...

Tested-by: Shawn Lin <shawn.lin@...k-chips.com>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Reviewed-by: Shawn Lin <shawn.lin@...k-chips.com>

>On Sunday, March 19, 2017 12:45:40 AM Bean Huo wrote:
>> This patch fixes the issue that mmc_blk_issue_rq still flushes cache
>> when eMMC cache has already been off through user space tool, such as
>> mmc-utils.
>> The reason is that card->ext_csd.cache_ctrl isn't reset.
>>
>> Signed-off-by: beanhuo <beanhuo@...ron.com>
>
>
>Best regards,
>--
>Bartlomiej Zolnierkiewicz
>Samsung R&D Institute Poland
>Samsung Electronics
>
>--
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//beanhuo