linux-kernel - Re: [PATCH v3 36/38] watchdog: add HAS

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Date:   Tue, 14 Mar 2023 07:21:38 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Niklas Schnelle <schnelle@...ux.ibm.com>,
        Arnd Bergmann <arnd@...db.de>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Alan Stern <stern@...land.harvard.edu>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-pci@...r.kernel.org, Arnd Bergmann <arnd@...nel.org>,
        linux-watchdog@...r.kernel.org
Subject: Re: [PATCH v3 36/38] watchdog: add HAS_IOPORT dependencies

On 3/14/23 05:12, Niklas Schnelle wrote:
> In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
> not being declared. We thus need to add HAS_IOPORT as dependency for
> those drivers using them.
> 
> Co-developed-by: Arnd Bergmann <arnd@...nel.org>
> Signed-off-by: Niklas Schnelle <schnelle@...ux.ibm.com>

Acked-by: Guenter Roeck <linux@...ck-us.net>

> ---
>   drivers/watchdog/Kconfig | 6 ++++--
>   1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
> index f0872970daf9..e5d6f886e25d 100644
> --- a/drivers/watchdog/Kconfig
> +++ b/drivers/watchdog/Kconfig
> @@ -453,6 +453,7 @@ config 21285_WATCHDOG
>   config 977_WATCHDOG
>   	tristate "NetWinder WB83C977 watchdog"
>   	depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
> +	depends on HAS_IOPORT
>   	help
>   	  Say Y here to include support for the WB977 watchdog included in
>   	  NetWinder machines. Alternatively say M to compile the driver as
> @@ -1271,6 +1272,7 @@ config ITCO_WDT
>   	select WATCHDOG_CORE
>   	depends on I2C || I2C=n
>   	depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
> +	depends on HAS_IOPORT # for I2C_I801
>   	select LPC_ICH if !EXPERT
>   	select I2C_I801 if !EXPERT && I2C
>   	help
> @@ -2148,7 +2150,7 @@ comment "PCI-based Watchdog Cards"
>   
>   config PCIPCWATCHDOG
>   	tristate "Berkshire Products PCI-PC Watchdog"
> -	depends on PCI
> +	depends on PCI && HAS_IOPORT
>   	help
>   	  This is the driver for the Berkshire Products PCI-PC Watchdog card.
>   	  This card simply watches your kernel to make sure it doesn't freeze,
> @@ -2163,7 +2165,7 @@ config PCIPCWATCHDOG
>   
>   config WDTPCI
>   	tristate "PCI-WDT500/501 Watchdog timer"
> -	depends on PCI
> +	depends on PCI && HAS_IOPORT
>   	help
>   	  If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
>