linux-kernel - [PATCH] mmc: rtsx: usb backend needs LED support

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Date:	Tue, 29 Apr 2014 11:45:59 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	micky_ching@...lsil.com.cn
Cc:	chris@...ntf.net, ulf.hansson@...aro.org, lee.jones@...aro.org,
	sameo@...ux.intel.com, gregkh@...uxfoundation.org,
	dan.carpenter@...cle.com, devel@...uxdriverproject.org,
	linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org,
	rogerable@...ltek.com, wei_wang@...lsil.com.cn
Subject: [PATCH] mmc: rtsx: usb backend needs LED support

[hijacking the thread since it has the right Cc list already, sorry]

I stumbled over this doing randconfig builds on linux-next

8<----------

>From c11f54f1e5ea0557e076867ca31c90bcb20e3e0c Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@...db.de>
Date: Tue, 29 Apr 2014 11:41:40 +0200
Subject: [PATCH] mmc: rtsx: usb backend needs LED support

Building the rtsx USB driver requires the LED classdev base
support, otherwise we get this build error:

drivers/built-in.o: In function `rtsx_usb_sdmmc_drv_remove':
:(.text+0x806480): undefined reference to `led_classdev_unregister'
drivers/built-in.o: In function `rtsx_usb_sdmmc_drv_probe':
:(.text+0x806708): undefined reference to `led_classdev_register'

This adds an explicit dependency in Kconfig

Signed-off-by: Arnd Bergmann <arnd@...db.de>

diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 92d91fe..66aedf3 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -696,6 +696,7 @@ config MMC_REALTEK_PCI
 config MMC_REALTEK_USB
 	tristate "Realtek USB SD/MMC Card Interface Driver"
 	depends on MFD_RTSX_USB
+	depends on LEDS_CLASS
 	help
 	  Say Y here to include driver code to support SD/MMC card interface
 	  of Realtek RTS5129/39 series card reader

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