[PATCH 1/6] ARM: ux500: don't select LEDS_GPIO for snowball

On Wednesday 22 August 2012, Arnd Bergmann wrote:

The gpio leds driver can only be built if the generic LED code is
also enabled. Snowball selects LEDS_GPIO for an unknown reason
but it does not select LEDS_CLASS and also does not really require
the LED support at all, so we can just drop this dependency.

Without this patch, building without LEDS_CLASS esults in:

drivers/built-in.o: In function `create_gpio_led.part.2':
governor_userspace.c:(.devinit.text+0x5a58): undefined reference to `led_classdev_register'
drivers/built-in.o: In function `gpio_led_remove':
governor_userspace.c:(.devexit.text+0x6b8): undefined reference to `led_classdev_unregister'

This reverts 8733f53c6 "ARM: ux500: Kconfig: Compile in leds-gpio
support for Snowball", which was not completely thought through.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Linus Walleij <redacted>
Cc: Lee Jones <redacted>

I discussed this with Lee on IRC, he really wants to keep the LED enabled for snowball
for his own convenience. How is this version instead?

	Arnd

From 53c4e002b7ebd70ad9dcfa7a97c0ae58e874e643 Mon Sep 17 00:00:00 2001

From: Arnd Bergmann <arnd@arndb.de>
Date: Wed, 15 Aug 2012 20:34:48 +0000
Subject: [PATCH] ARM: ux500: don't select LEDS_GPIO for snowball

The gpio leds driver can only be built if the generic LED code is
also enabled. Snowball selects LEDS_GPIO for an unknown reason
but it does not select LEDS_CLASS and also does not really require
the LED support at all, so we can just drop this dependency.

Without this patch, building without LEDS_CLASS esults in:

drivers/built-in.o: In function `create_gpio_led.part.2':
governor_userspace.c:(.devinit.text+0x5a58): undefined reference to `led_classdev_register'
drivers/built-in.o: In function `gpio_led_remove':
governor_userspace.c:(.devexit.text+0x6b8): undefined reference to `led_classdev_unregister'

This reverts 8733f53c6 "ARM: ux500: Kconfig: Compile in leds-gpio
support for Snowball", which was not completely thought through.

In order to leave the GPIO LED code still present in normal
builds, this also enables the symbol in u8500_defconfig, in addition
to the other LED drivers that are already selected there.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Linus Walleij <redacted>
Cc: Lee Jones <redacted>

diff --git a/arch/arm/configs/u8500_defconfig b/arch/arm/configs/u8500_defconfig
index 2d4f661..da68454 100644
--- a/arch/arm/configs/u8500_defconfig
+++ b/arch/arm/configs/u8500_defconfig

@@ -86,6 +86,7 @@ CONFIG_NEW_LEDS=y
 CONFIG_LEDS_CLASS=y
 CONFIG_LEDS_LM3530=y
 CONFIG_LEDS_LP5521=y
+CONFIG_LEDS_GPIO=y
 CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_AB8500=y
 CONFIG_RTC_DRV_PL031=y

diff --git a/arch/arm/mach-ux500/Kconfig b/arch/arm/mach-ux500/Kconfig
index c013bbf..53d3d46 100644
--- a/arch/arm/mach-ux500/Kconfig
+++ b/arch/arm/mach-ux500/Kconfig

@@ -41,7 +41,6 @@ config MACH_HREFV60
 config MACH_SNOWBALL
 	bool "U8500 Snowball platform"
 	select MACH_MOP500
-	select LEDS_GPIO
 	help
 	  Include support for the snowball development platform.