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From: Arnd Bergmann <arnd@kernel.org>
To: Jiri Kosina <jikos@kernel.org>,
	Benjamin Tissoires <bentiss@kernel.org>,
	"Derek J. Clark" <derekjohn.clark@gmail.com>,
	Mark Pearson <mpearson-lenovo@squebb.ca>,
	Mario Limonciello <mario.limonciello@amd.com>,
	Ethan Tidmore <ethantidmore06@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
	Aditya Garg <gargaditya08@live.com>,
	Jonathan Denose <jdenose@google.com>,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] HID: hid-lenovo-go: fix LEDS dependencies
Date: Tue, 24 Mar 2026 20:20:28 +0100	[thread overview]
Message-ID: <20260324192045.2895560-1-arnd@kernel.org> (raw)

From: Arnd Bergmann <arnd@arndb.de>

The newly added hid-lenovo-go and hid-lenovo-go-s drivers attempt to
'select LEDS_CLASS', which has a dependency on NEW_LEDS, causing a build
failure when NEW_LEDS itself it disabled:

WARNING: unmet direct dependencies detected for LEDS_CLASS
  Depends on [n]: NEW_LEDS [=n]
  Selected by [m]:
  - HID_LENOVO_GO [=m] && HID_SUPPORT [=y] && HID [=m] && USB_HID [=m]
  - HID_LENOVO_GO_S [=m] && HID_SUPPORT [=y] && HID [=m] && USB_HID [=m]

WARNING: unmet direct dependencies detected for LEDS_CLASS_MULTICOLOR
  Depends on [n]: NEW_LEDS [=n] && LEDS_CLASS [=m]
  Selected by [m]:
  - HID_LENOVO_GO [=m] && HID_SUPPORT [=y] && HID [=m] && USB_HID [=m]
  - HID_LENOVO_GO_S [=m] && HID_SUPPORT [=y] && HID [=m] && USB_HID [=m]
ERROR: modpost: "led_set_brightness_nopm" [drivers/leds/led-class.ko] undefined!
ERROR: modpost: "led_set_brightness" [drivers/leds/led-class.ko] undefined!
ERROR: modpost: "led_get_color_name" [drivers/leds/led-class-multicolor.ko] undefined!
ERROR: modpost: "led_set_brightness" [drivers/leds/led-class-multicolor.ko] undefined!

Device drivers generally should not select other subsystems like this, as
that tends to cause dependency problems including loops in the dependency
graph.

Change these two and the older hid-lenovo driver to behave the same way as all
other HID drivers and use 'depends on LEDS_CLASS' or 'depends on LEDS_CLASS_MULTICOLOR'
instead, which itself has NEW_LEDS and LEDS_CLASS as dependencies.

Fixes: a23f3497bf20 ("HID: hid-lenovo-go-s: Add Lenovo Legion Go S Series HID Driver")
Fixes: d69ccfcbc955 ("HID: hid-lenovo-go: Add Lenovo Legion Go Series HID Driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/hid/Kconfig | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 10c12d8e6557..f658ed0168ea 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -610,8 +610,7 @@ config HID_LED
 
 config HID_LENOVO
 	tristate "Lenovo / Thinkpad devices"
-	select NEW_LEDS
-	select LEDS_CLASS
+	depends on LEDS_CLASS
 	help
 	Support for IBM/Lenovo devices that are not fully compliant with HID standard.
 
@@ -626,8 +625,7 @@ config HID_LENOVO
 config HID_LENOVO_GO
 	tristate "HID Driver for Lenovo Legion Go Series Controllers"
 	depends on USB_HID
-	select LEDS_CLASS
-	select LEDS_CLASS_MULTICOLOR
+	depends on LEDS_CLASS_MULTICOLOR
 	help
 	Support for Lenovo Legion Go devices with detachable controllers.
 
@@ -638,8 +636,7 @@ config HID_LENOVO_GO
 config HID_LENOVO_GO_S
 	tristate "HID Driver for Lenovo Legion Go S Controller"
 	depends on USB_HID
-	select LEDS_CLASS
-	select LEDS_CLASS_MULTICOLOR
+	depends on LEDS_CLASS_MULTICOLOR
 	help
 	Support for Lenovo Legion Go S Handheld Console Controller.
 
-- 
2.39.5


             reply	other threads:[~2026-03-24 19:20 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-24 19:20 Arnd Bergmann [this message]
2026-03-25 14:46 ` [PATCH] HID: hid-lenovo-go: fix LEDS dependencies Mark Pearson
2026-03-27 10:55 ` Jiri Kosina

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