linux-kernel - Re: [PATCH] drivers/mmc/core/bus: Remove redundant driver match function

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Message-ID: <CAPDyKFqRsKAo7YtxQxmieMcWRQpxs1vMkFZ9VXWocpH9xneXPw@mail.gmail.com>
Date:   Thu, 9 Dec 2021 13:56:26 +0100
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     lizhe <sensor1010@....com>
Cc:     u.kleine-koenig@...gutronix.de,
        srinivas.pandruvada@...ux.intel.com, pali@...nel.org,
        TheSven73@...il.com, lznuaa@...il.com, linux-mmc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers/mmc/core/bus: Remove redundant driver match function

On Thu, 9 Dec 2021 at 13:02, lizhe <sensor1010@....com> wrote:
>
> If there is no driver match function, the driver core assumes
> that each candidate pair (driver, device) matches. See function
> driver_match_device().
>
> Drop the mmc bus's match function that always returned 1 and
> so implements the same behaviour as when there is no match
> function.
>
> Signed-off-by: lizhe <sensor1010@....com>

I have already applied your previous version. Or is there a change in
this version?

Future wise, please bump the version number between each submission
and highlight what you have changed. See
Documentation/SubmittingPatches.

Kind regards
Uffe


> ---
>  drivers/mmc/core/bus.c | 11 -----------
>  1 file changed, 11 deletions(-)
>
> diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
> index f6b7a9c5bbff..096ae624be9a 100644
> --- a/drivers/mmc/core/bus.c
> +++ b/drivers/mmc/core/bus.c
> @@ -53,16 +53,6 @@ static struct attribute *mmc_dev_attrs[] = {
>  };
>  ATTRIBUTE_GROUPS(mmc_dev);
>
> -/*
> - * This currently matches any MMC driver to any MMC card - drivers
> - * themselves make the decision whether to drive this card in their
> - * probe method.
> - */
> -static int mmc_bus_match(struct device *dev, struct device_driver *drv)
> -{
> -       return 1;
> -}
> -
>  static int
>  mmc_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
>  {
> @@ -226,7 +216,6 @@ static const struct dev_pm_ops mmc_bus_pm_ops = {
>  static struct bus_type mmc_bus_type = {
>         .name           = "mmc",
>         .dev_groups     = mmc_dev_groups,
> -       .match          = mmc_bus_match,
>         .uevent         = mmc_bus_uevent,
>         .probe          = mmc_bus_probe,
>         .remove         = mmc_bus_remove,
> --
> 2.25.1
>
>