linux-kernel - Re: [PATCH 1/8] ipmi: ASPEED_BT_IPMI_BMC: select REGMAP

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Message-ID: <Y/vkOCLCeubl6B34@minyard.net>
Date:   Sun, 26 Feb 2023 16:59:04 -0600
From:   Corey Minyard <minyard@....org>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     linux-kernel@...r.kernel.org, Andrew Jeffery <andrew@...id.au>,
        openipmi-developer@...ts.sourceforge.net,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH 1/8] ipmi: ASPEED_BT_IPMI_BMC: select REGMAP_MMIO instead
 of depending on it

On Sat, Feb 25, 2023 at 09:39:46PM -0800, Randy Dunlap wrote:
> REGMAP is a hidden (not user visible) symbol. Users cannot set it
> directly thru "make *config", so drivers should select it instead of
> depending on it if they need it.
> 
> Consistently using "select" or "depends on" can also help reduce
> Kconfig circular dependency issues.
> 
> Therefore, change the use of "depends on REGMAP_MMIO" to
> "select REGMAP_MMIO", which will also set REGMAP.

This seems reasonable.  I can take it into my tree, or..

Acked-by: Corey Minyard <cminyard@...sta.com>

> 
> Fixes: eb994594bc22 ("ipmi: bt-bmc: Use a regmap for register access")
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: Andrew Jeffery <andrew@...id.au>
> Cc: Corey Minyard <minyard@....org>
> Cc: openipmi-developer@...ts.sourceforge.net
> Cc: Arnd Bergmann <arnd@...db.de>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> ---
>  drivers/char/ipmi/Kconfig |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff -- a/drivers/char/ipmi/Kconfig b/drivers/char/ipmi/Kconfig
> --- a/drivers/char/ipmi/Kconfig
> +++ b/drivers/char/ipmi/Kconfig
> @@ -162,7 +162,8 @@ config IPMI_KCS_BMC_SERIO
>  
>  config ASPEED_BT_IPMI_BMC
>  	depends on ARCH_ASPEED || COMPILE_TEST
> -	depends on REGMAP && REGMAP_MMIO && MFD_SYSCON
> +	depends on MFD_SYSCON
> +	select REGMAP_MMIO
>  	tristate "BT IPMI bmc driver"
>  	help
>  	  Provides a driver for the BT (Block Transfer) IPMI interface