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Message-ID: <9d34efb1-21a7-3e66-1115-8ddf6fae40af@infradead.org>
Date:   Tue, 17 Jan 2023 09:25:39 -0800
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Subject: Re: [PATCH] hid: stop drivers from selecting CONFIG_HID
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To:     Arnd Bergmann <arnd@kernel.org>,
        Basavaraj Natikar <basavaraj.natikar@amd.com>,
        Jiri Kosina <jikos@kernel.org>,
        Benjamin Tissoires <benjamin.tissoires@redhat.com>,
        Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     Arnd Bergmann <arnd@arndb.de>,
        Douglas Anderson <dianders@chromium.org>,
        Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
References: <20230117172121.2715953-1-arnd@kernel.org>
From:   Randy Dunlap <rdunlap@infradead.org>
In-Reply-To: <20230117172121.2715953-1-arnd@kernel.org>
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On 1/17/23 09:20, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> There is a mix of drivers using either 'depends on HID' or 'select HID',
> which causes both circular dependencies and missed dependencies for
> a 'select':
> 
> WARNING: unment direct dependencies for HID
>   Depends on [m]: HID_SUPPORT [=y] && INPUT [=m]
>   Selected by [y]:
>   - AMD_SFH_HID [=y] && HID_SUPPORT [=y] && (X86_64 || COMPILE_TEST [=y]) && PCI [=y]
>   Selected by [m]:
>   - I2C_HID_CORE [=m] && HID_SUPPORT [=y]
> 
> WARNING: unmet direct dependencies detected for INPUT_FF_MEMLESS
>   Depends on [m]: INPUT [=m]
>   Selected by [y]:
>   - DRAGONRISE_FF [=y] && HID_SUPPORT [=y] && HID [=y] && HID_DRAGONRISE [=y]
>   - HID_MICROSOFT [=y] && HID_SUPPORT [=y] && HID [=y]
>   - GREENASIA_FF [=y] && HID_SUPPORT [=y] && HID [=y] && HID_GREENASIA [=y]
>   Selected by [m]:
>   - INPUT_ARIZONA_HAPTICS [=m] && INPUT [=m] && INPUT_MISC [=y] && MFD_ARIZONA [=y] && SND_SOC [=m]
>   - INPUT_PM8XXX_VIBRATOR [=m] && INPUT [=m] && INPUT_MISC [=y] && (MFD_PM8XXX [=m] || MFD_SPMI_PMIC [=n])
>   - INPUT_MAX8997_HAPTIC [=m] && INPUT [=m] && INPUT_MISC [=y] && PWM [=y] && MFD_MAX8997 [=y]
>   - INPUT_GPIO_VIBRA [=m] && INPUT [=m] && INPUT_MISC [=y] && (GPIOLIB [=y] || COMPILE_TEST [=y])
>   - INPUT_REGULATOR_HAPTIC [=m] && INPUT [=m] && INPUT_MISC [=y] && REGULATOR [=y]
>   - INPUT_TWL6040_VIBRA [=m] && INPUT [=m] && INPUT_MISC [=y] && TWL6040_CORE [=y]
>   - INPUT_PWM_VIBRA [=m] && INPUT [=m] && INPUT_MISC [=y] && PWM [=y]
>   - INPUT_DRV260X_HAPTICS [=m] && INPUT_MISC [=y] && INPUT [=m] && I2C [=y] && (GPIOLIB [=y] || COMPILE_TEST [=y])
>   - INPUT_DRV2665_HAPTICS [=m] && INPUT_MISC [=y] && INPUT [=m] && I2C [=y]
>   - INPUT_DRV2667_HAPTICS [=m] && INPUT_MISC [=y] && INPUT [=m] && I2C [=y]
>   - INPUT_SC27XX_VIBRA [=m] && INPUT [=m] && INPUT_MISC [=y] && (MFD_SC27XX_PMIC [=y] || COMPILE_TEST [=y])
>   - HID_MAYFLASH [=m] && HID_SUPPORT [=y] && HID [=y]
> 
> Avoid this by changing all HID client drivers to use 'depends on HID'.
> For I2C_HID, this requires a larger rework of the Kconfig description,
> but it hopefully becomes easier to understand without the complex
> I2C_HID_CORE definition.
> 
> Fixes: 25621bcc8976 ("HID: Kconfig: split HID support and hid-core compilation")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>


Acked-by: Randy Dunlap <rdunlap@infradead.org>

Thanks.

> ---
>  drivers/hid/amd-sfh-hid/Kconfig   |  2 +-
>  drivers/hid/i2c-hid/Kconfig       | 31 ++++++++++++++++---------------
>  drivers/hid/intel-ish-hid/Kconfig |  2 +-
>  3 files changed, 18 insertions(+), 17 deletions(-)
> 
> diff --git a/drivers/hid/amd-sfh-hid/Kconfig b/drivers/hid/amd-sfh-hid/Kconfig
> index 56e473fc3c93..af752dd3a340 100644
> --- a/drivers/hid/amd-sfh-hid/Kconfig
> +++ b/drivers/hid/amd-sfh-hid/Kconfig
> @@ -5,7 +5,7 @@ menu "AMD SFH HID Support"
>  
>  config AMD_SFH_HID
>  	tristate "AMD Sensor Fusion Hub"
> -	select HID
> +	depends on HID
>  	help
>  	  If you say yes to this option, support will be included for the
>  	  AMD Sensor Fusion Hub.
> diff --git a/drivers/hid/i2c-hid/Kconfig b/drivers/hid/i2c-hid/Kconfig
> index d65abe65ce73..b72b7f1ceca8 100644
> --- a/drivers/hid/i2c-hid/Kconfig
> +++ b/drivers/hid/i2c-hid/Kconfig
> @@ -1,11 +1,15 @@
>  # SPDX-License-Identifier: GPL-2.0-only
> -menu "I2C HID support"
> -	depends on I2C
> +menuconfig I2C_HID
> +	tristate "I2C HID support"
> +	default y
> +	depends on I2C && INPUT && HID
> +
> +if I2C_HID
>  
>  config I2C_HID_ACPI
>  	tristate "HID over I2C transport layer ACPI driver"
> -	default n
> -	depends on I2C && INPUT && ACPI
> +	depends on ACPI
> +	select I2C_HID_CORE
>  	help
>  	  Say Y here if you use a keyboard, a touchpad, a touchscreen, or any
>  	  other HID based devices which is connected to your computer via I2C.
> @@ -19,8 +23,8 @@ config I2C_HID_ACPI
>  
>  config I2C_HID_OF
>  	tristate "HID over I2C transport layer Open Firmware driver"
> -	default n
> -	depends on I2C && INPUT && OF
> +	depends on OF
> +	select I2C_HID_CORE
>  	help
>  	  Say Y here if you use a keyboard, a touchpad, a touchscreen, or any
>  	  other HID based devices which is connected to your computer via I2C.
> @@ -34,8 +38,8 @@ config I2C_HID_OF
>  
>  config I2C_HID_OF_ELAN
>  	tristate "Driver for Elan hid-i2c based devices on OF systems"
> -	default n
> -	depends on I2C && INPUT && OF
> +	depends on OF
> +	select I2C_HID_CORE
>  	help
>  	  Say Y here if you want support for Elan i2c devices that use
>  	  the i2c-hid protocol on Open Firmware (Device Tree)-based
> @@ -49,8 +53,8 @@ config I2C_HID_OF_ELAN
>  
>  config I2C_HID_OF_GOODIX
>  	tristate "Driver for Goodix hid-i2c based devices on OF systems"
> -	default n
> -	depends on I2C && INPUT && OF
> +	depends on OF
> +	select I2C_HID_CORE
>  	help
>  	  Say Y here if you want support for Goodix i2c devices that use
>  	  the i2c-hid protocol on Open Firmware (Device Tree)-based
> @@ -62,10 +66,7 @@ config I2C_HID_OF_GOODIX
>  	  will be called i2c-hid-of-goodix.  It will also build/depend on
>  	  the module i2c-hid.
>  
> -endmenu
> -
>  config I2C_HID_CORE
>  	tristate
> -	default y if I2C_HID_ACPI=y || I2C_HID_OF=y || I2C_HID_OF_ELAN=y || I2C_HID_OF_GOODIX=y
> -	default m if I2C_HID_ACPI=m || I2C_HID_OF=m || I2C_HID_OF_ELAN=m || I2C_HID_OF_GOODIX=m
> -	select HID
> +
> +endif
> diff --git a/drivers/hid/intel-ish-hid/Kconfig b/drivers/hid/intel-ish-hid/Kconfig
> index 689da84a520d..253dc10d35ef 100644
> --- a/drivers/hid/intel-ish-hid/Kconfig
> +++ b/drivers/hid/intel-ish-hid/Kconfig
> @@ -6,7 +6,7 @@ config INTEL_ISH_HID
>  	tristate "Intel Integrated Sensor Hub"
>  	default n
>  	depends on X86
> -	select HID
> +	depends on HID
>  	help
>  	  The Integrated Sensor Hub (ISH) enables the ability to offload
>  	  sensor polling and algorithm processing to a dedicated low power

-- 
~Randy