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From:   Arnd Bergmann <arnd@kernel.org>
To:     Jiri Kosina <jikos@kernel.org>,
        Benjamin Tissoires <benjamin.tissoires@redhat.com>,
        Douglas Anderson <dianders@chromium.org>,
        Maxime Ripard <mripard@kernel.org>
Cc:     Arnd Bergmann <arnd@arndb.de>, Hans de Goede <hdegoede@redhat.com>,
        linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] HID: i2c-hid: add more DRM dependencies
Date:   Wed,  2 Aug 2023 14:49:40 +0200
Message-Id: <20230802124947.1355415-1-arnd@kernel.org>
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From: Arnd Bergmann <arnd@arndb.de>

When a symbol is selected that has extra dependencies,
anything that selects it must have the same dependencies.
With the added CONFIG_DRM reference from I2C_HID_CORE,
this broke a couple of drivers that now also depend
on DRM:

WARNING: unmet direct dependencies detected for I2C_HID_CORE
  Depends on [m]: HID_SUPPORT [=y] && I2C_HID [=y] && (DRM [=m] || !DRM [=m])
  Selected by [y]:
  - I2C_HID_OF [=y] && HID_SUPPORT [=y] && I2C_HID [=y]
  - I2C_HID_ACPI [=y] && HID_SUPPORT [=y] && I2C_HID [=y] && ACPI [=y]
  - I2C_HID_OF_GOODIX [=y] && HID_SUPPORT [=y] && I2C_HID [=y] && OF [=y]
x86_64-linux-ld: vmlinux.o: in function `i2c_hid_core_remove':
(.text+0xfc8826): undefined reference to `drm_panel_remove_follower'
x86_64-linux-ld: vmlinux.o: in function `i2c_hid_core_probe':
(.text+0xfc8da0): undefined reference to `drm_is_panel_follower'

Add the corresponding DRM||!DRM dependencies on each one that
is affected.

Fixes: 96a37bfd232ae ("HID: i2c-hid: Support being a panel follower")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/hid/i2c-hid/Kconfig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/hid/i2c-hid/Kconfig b/drivers/hid/i2c-hid/Kconfig
index 2bdb55203104b..ef7c595c9403c 100644
--- a/drivers/hid/i2c-hid/Kconfig
+++ b/drivers/hid/i2c-hid/Kconfig
@@ -9,6 +9,7 @@ if I2C_HID
 config I2C_HID_ACPI
 	tristate "HID over I2C transport layer ACPI driver"
 	depends on ACPI
+	depends on DRM || !DRM
 	select I2C_HID_CORE
 	help
 	  Say Y here if you use a keyboard, a touchpad, a touchscreen, or any
@@ -25,6 +26,7 @@ config I2C_HID_OF
 	tristate "HID over I2C transport layer Open Firmware driver"
 	# No "depends on OF" because this can also be used for manually
 	# (board-file) instantiated "hid-over-i2c" type i2c-clients.
+	depends on DRM || !DRM
 	select I2C_HID_CORE
 	help
 	  Say Y here if you use a keyboard, a touchpad, a touchscreen, or any
@@ -41,6 +43,7 @@ config I2C_HID_OF
 config I2C_HID_OF_ELAN
 	tristate "Driver for Elan hid-i2c based devices on OF systems"
 	depends on OF
+	depends on DRM || !DRM
 	select I2C_HID_CORE
 	help
 	  Say Y here if you want support for Elan i2c devices that use
@@ -56,6 +59,7 @@ config I2C_HID_OF_ELAN
 config I2C_HID_OF_GOODIX
 	tristate "Driver for Goodix hid-i2c based devices on OF systems"
 	depends on OF
+	depends on DRM || !DRM
 	select I2C_HID_CORE
 	help
 	  Say Y here if you want support for Goodix i2c devices that use
-- 
2.39.2