linux-kernel - Re: [PATCH v3 2/2] siox: Make remove callback return void

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Date:   Wed, 25 Nov 2020 15:42:57 +0100
From:   Thorsten Scherer <thorsten.scherer@...elmann.de>
To:     Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
CC:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <linux-kernel@...r.kernel.org>,
        Pengutronix Kernel Team <kernel@...gutronix.de>
Subject: Re: [PATCH v3 2/2] siox: Make remove callback return void

Hello,

On Wed, Nov 25, 2020 at 10:31:06AM +0100, Uwe Kleine-König wrote:
> The driver core ignores the return value of the remove callback, so
> don't give siox drivers the chance to provide a value.
> 
> All siox drivers only allocate devm-managed resources in
> .probe, so there is no .remove callback to fix.
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

Acked-by: Thorsten Scherer <t.scherer@...elmann.de>

> ---
>  drivers/siox/siox-core.c | 5 ++---
>  include/linux/siox.h     | 2 +-
>  2 files changed, 3 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/siox/siox-core.c b/drivers/siox/siox-core.c
> index b56cdcb52967..1794ff0106bc 100644
> --- a/drivers/siox/siox-core.c
> +++ b/drivers/siox/siox-core.c
> @@ -525,12 +525,11 @@ static int siox_remove(struct device *dev)
>  	struct siox_driver *sdriver =
>  		container_of(dev->driver, struct siox_driver, driver);
>  	struct siox_device *sdevice = to_siox_device(dev);
> -	int ret = 0;
>  
>  	if (sdriver->remove)
> -		ret = sdriver->remove(sdevice);
> +		sdriver->remove(sdevice);
>  
> -	return ret;
> +	return 0;
>  }
>  
>  static void siox_shutdown(struct device *dev)
> diff --git a/include/linux/siox.h b/include/linux/siox.h
> index da7225bf1877..6bfbda3f634c 100644
> --- a/include/linux/siox.h
> +++ b/include/linux/siox.h
> @@ -36,7 +36,7 @@ bool siox_device_connected(struct siox_device *sdevice);
>  
>  struct siox_driver {
>  	int (*probe)(struct siox_device *sdevice);
> -	int (*remove)(struct siox_device *sdevice);
> +	void (*remove)(struct siox_device *sdevice);
>  	void (*shutdown)(struct siox_device *sdevice);
>  
>  	/*
> -- 
> 2.29.2
> 

Kind regards
Thorsten

--
Thorsten Scherer | Eckelmann AG | www.eckelmann.de |