linux-kernel - Re: [PATCH] HID: wacom: Add LED selector control for Wacom Intuos4 WL

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Date:	Sat, 19 May 2012 19:11:55 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Jiri Kosina <jkosina@...e.cz>
cc:	Przemo Firszt <przemo@...szt.eu>, pinglinux@...il.com,
	linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
	linuxwacom-devel@...ts.sourceforge.net
Subject: Re: [PATCH] HID: wacom: Add LED selector control for Wacom Intuos4
 WL

On Fri, 11 May 2012, Jiri Kosina wrote:

> > Add sysfs attribute to control LED selector on Wacom Intuos4. 
> 
> Applied, thanks.
> 

This results in a build failure if you've enabled CONFIG_HID_WACOM without 
CONFIG_NEW_LEDS, which is required for CONFIG_LEDS_CLASS.

drivers/built-in.o: In function `led_classdev_unregister':
(.text+0x3ff685): undefined reference to `led_brightness_set'
drivers/built-in.o: In function `led_classdev_unregister':
(.text+0x3ff695): undefined reference to `leds_list_lock'
drivers/built-in.o: In function `led_classdev_unregister':
(.text+0x3ff6ab): undefined reference to `leds_list_lock'
drivers/built-in.o: In function `led_classdev_register':
(.text+0x3ff6e9): undefined reference to `leds_list_lock'
drivers/built-in.o: In function `led_classdev_register':
(.text+0x3ff6f5): undefined reference to `leds_list'
drivers/built-in.o: In function `led_classdev_register':
(.text+0x3ff700): undefined reference to `leds_list'
drivers/built-in.o: In function `led_classdev_register':
(.text+0x3ff70c): undefined reference to `leds_list_lock'

Please apply the patch below.


hid, wacom: fix build breakage without CONFIG_LEDS_CLASS

CONFIG_HID_WACOM must depend on CONFIG_LEDS_CLASS, otherwise 
CONFIG_NEW_LEDS may be disabled.

Signed-off-by: David Rientjes <rientjes@...gle.com>
---
 drivers/hid/Kconfig |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -613,8 +613,8 @@ config THRUSTMASTER_FF
 config HID_WACOM
 	tristate "Wacom Bluetooth devices support"
 	depends on BT_HIDP
+	depends on LEDS_CLASS
 	select POWER_SUPPLY
-	select LEDS_CLASS
 	---help---
 	Support for Wacom Graphire Bluetooth and Intuos4 WL tablets.
 
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