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Date:   Sat, 5 Aug 2023 15:42:48 +0900
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Subject: Re: [PATCH] extcon: cht_wc: add POWER_SUPPLY dependency
To:     Arnd Bergmann <arnd@kernel.org>,
        MyungJoo Ham <myungjoo.ham@samsung.com>,
        Chanwoo Choi <cw00.choi@samsung.com>,
        Sebastian Reichel <sebastian.reichel@collabora.com>,
        Hans de Goede <hdegoede@redhat.com>
Cc:     Arnd Bergmann <arnd@arndb.de>,
        =?UTF-8?Q?Alvin_=c5=a0ipraga?= <alsi@bang-olufsen.dk>,
        Heikki Krogerus <heikki.krogerus@linux.intel.com>,
        Marek Vasut <marex@denx.de>, linux-kernel@vger.kernel.org
References: <20230804132853.2300155-1-arnd@kernel.org>
From:   Chanwoo Choi <chanwoo@kernel.org>
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In-Reply-To: <20230804132853.2300155-1-arnd@kernel.org>
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On 23. 8. 4. 22:28, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> The driver fails to link when CONFIG_POWER_SUPPLY is disabled:
> 
> x86_64-linux-ld: vmlinux.o: in function `cht_wc_extcon_psy_get_prop':
> extcon-intel-cht-wc.c:(.text+0x15ccda7): undefined reference to `power_supply_get_drvdata'
> x86_64-linux-ld: vmlinux.o: in function `cht_wc_extcon_pwrsrc_event':
> extcon-intel-cht-wc.c:(.text+0x15cd3e9): undefined reference to `power_supply_changed'
> x86_64-linux-ld: vmlinux.o: in function `cht_wc_extcon_probe':
> extcon-intel-cht-wc.c:(.text+0x15cd596): undefined reference to `devm_power_supply_register'
> 
> It should be possible to change the driver to not require this at
> compile time and still provide other functions, but adding a hard
> Kconfig dependency does not seem to have any practical downsides
> and is simpler since the option is normally enabled anyway.
> 
> Fixes: 66e31186cd2aa ("extcon: intel-cht-wc: Add support for registering a power_supply class-device")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>  drivers/extcon/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
> index 0ef1971d22bb0..8de9023c2a387 100644
> --- a/drivers/extcon/Kconfig
> +++ b/drivers/extcon/Kconfig
> @@ -62,6 +62,7 @@ config EXTCON_INTEL_CHT_WC
>  	tristate "Intel Cherrytrail Whiskey Cove PMIC extcon driver"
>  	depends on INTEL_SOC_PMIC_CHTWC
>  	depends on USB_SUPPORT
> +	depends on POWER_SUPPLY
>  	select USB_ROLE_SWITCH
>  	help
>  	  Say Y here to enable extcon support for charger detection / control

Applied it. Thanks.

-- 
Best Regards,
Samsung Electronics
Chanwoo Choi