linux-kernel - Re: [PATCH 3/4] amba: Make the remove callback return void

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Date:   Tue, 24 Nov 2020 11:56:53 +0100
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
Cc:     Russell King <linux@...linux.org.uk>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh@...nel.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/4] amba: Make the remove callback return void

On Tue, 24 Nov 2020 at 11:33, Uwe Kleine-König
<u.kleine-koenig@...gutronix.de> wrote:
>
> Most amba drivers return 0 in their remove callback. Together with the
> driver core ignoring the return value anyhow, it doesn't make sense to
> return a value here.
>
> So add a warning to the only driver that could return an error code and
> change the remove prototype to return void, which makes it explicit that
> returning an error value doesn't work as expected. This simplifies changing
> the core remove callback to return void, too.
>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

[...]

> diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c
> index 6772f23e5c4b..de71058d131d 100644
> --- a/drivers/hwtracing/coresight/coresight-replicator.c
> +++ b/drivers/hwtracing/coresight/coresight-replicator.c
> @@ -390,7 +390,7 @@ static int dynamic_replicator_probe(struct amba_device *adev,
>
>  static int __exit dynamic_replicator_remove(struct amba_device *adev)

Looks like you missed to convert this to void.

>  {
> -       return replicator_remove(&adev->dev);
> +       replicator_remove(&adev->dev);
>  }

Other the above, feel free to add:

Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>

[...]

Kind regards
Uffe