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From:   Ulf Hansson <ulf.hansson@linaro.org>
Date:   Fri, 17 Apr 2020 13:29:14 +0200
Message-ID: <CAPDyKFqfq_UMNfgdu8HioAa6+qy+JYrNkVDg8ARu1BpNKx9hgw@mail.gmail.com>
Subject: Re: [PATCH v5 0/3] Introduce the request_atomic() for the host
To:     Baolin Wang <baolin.wang7@gmail.com>
Cc:     Adrian Hunter <adrian.hunter@intel.com>,
        Arnd Bergmann <arnd@arndb.de>,
        Orson Zhai <orsonzhai@gmail.com>,
        Chunyan Zhang <zhang.lyra@gmail.com>,
        "linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Mon, 13 Apr 2020 at 04:46, Baolin Wang <baolin.wang7@gmail.com> wrote:
>
> This patch set introduces a new request_atomic() interface for the
> MMC host controller, which is used to submit a request to host in
> the atomic context, such as in the irq hard handler, to reduce the
> request latency.
>
> Note, this patch set is based on Adrian's patch set:
> https://www.spinics.net/lists/linux-mmc/msg58529.html
>
> Any comments are welcome. Thanks.
>
> Changes from v4:
>  - Remove redundant checking when warning the return value of request_atomic().
>  - Add acked tag from Adrian for patch 1.
>  - Re-implement the request_atomic() based on the Adrian's patch set.
>
> Changes from v3:
>  - Move patch 3 of V3 patch set into patch 1.
>  - Add a warning for unexpected return value of request_atomic().
>  - Remove redundant checking of ops->request().
>
> Changes from v2:
>  - Return busy flag if encountering unusual card busy state
>  instead of polling in interrupt context.
>  - Add a work for HSQ to try again in non-atomic context if the host
>  returns busy flag.
>
> Changes from v1:
>  - Re-split the changes to make them more clear suggested by Ulf.
>  - Factor out the auto CMD23 checking into a separate function.
>
> Baolin Wang (3):
>   mmc: host: Introduce the request_atomic() for the host
>   mmc: host: sdhci: Implement the request_atomic() API
>   mmc: host: sdhci-sprd: Implement the request_atomic() API
>
>  drivers/mmc/host/mmc_hsq.c    | 29 ++++++++++++++++++++++++++++-
>  drivers/mmc/host/mmc_hsq.h    |  1 +
>  drivers/mmc/host/sdhci-sprd.c | 23 ++++++++++++++++++++---
>  drivers/mmc/host/sdhci.c      | 34 ++++++++++++++++++++++++++++++++++
>  drivers/mmc/host/sdhci.h      |  1 +
>  include/linux/mmc/host.h      |  3 +++
>  6 files changed, 87 insertions(+), 4 deletions(-)
>
> --
> 2.17.1
>

Applied for next, thanks!

Kind regards
Uffe