[PATCH 0/9] mmc: convert to devm_clk_get_enabled() API

Ulf Hansson ulf.hansson at linaro.org
Wed Aug 28 08:11:08 PDT 2024


On Tue, 27 Aug 2024 at 09:34, zhangxirui <xirui.zhang at vivo.com> wrote:
>
> This series use devm_clk_get_enabled() to simplify code
> and avoids the calls to clk_disable_unprepare()

I agree that it simplifies code - but it also changes the behaviour,
in which order clocks are getting unprepared/disabled during the
->remove() phase. In other words, this needs to be thoroughly tested
and not just considered as a trivial cleanup series.

For example, if there is a PM domain attached to the mmc host device,
is it really okay to allow powering-off the PM domain before the
clocks are being gated? This could potentially happen if we apply the
$subject series.

Kind regards
Uffe

>
> zhangxirui (9):
>   mmc: cavium-thunderx: Use devm_clk_get_enabled() helpers
>   mmc: davinci_mmc: Use devm_clk_get_enabled() helpers
>   mmc: dw_mmc-hi3798cv200: Use devm_clk_get_enabled() helpers
>   mmc: mvsdio: Use devm_clk_get_enabled() helpers
>   mmc: mxcmmc: Use devm_clk_get_enabled() helpers
>   mmc: mxs-mmc: Use devm_clk_get_enabled() helpers
>   mmc: sdhci: milbeaut: Use devm_clk_get_enabled() helpers
>   mmc: sdhci-of-arasan: Use devm_clk_get_enabled() helpers
>   mmc: sdhci_f_sdh30: Use devm_clk_get_enabled() helpers
>
>  drivers/mmc/host/cavium-thunderx.c    |  7 +-----
>  drivers/mmc/host/davinci_mmc.c        |  8 +-----
>  drivers/mmc/host/dw_mmc-hi3798cv200.c | 28 +++------------------
>  drivers/mmc/host/mvsdio.c             | 13 +++-------
>  drivers/mmc/host/mxcmmc.c             | 25 +++----------------
>  drivers/mmc/host/mxs-mmc.c            | 13 +++-------
>  drivers/mmc/host/sdhci-milbeaut.c     | 25 +++----------------
>  drivers/mmc/host/sdhci-of-arasan.c    | 31 ++++-------------------
>  drivers/mmc/host/sdhci_f_sdh30.c      | 36 ++++++++-------------------
>  9 files changed, 35 insertions(+), 151 deletions(-)
>
> --
> 2.25.1
>



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