Merge pull request torvalds#108 from funman/odroidxu3-3.10.y

backports: Fix out of tree build

Author: mdrjr

arch/arm/configs/odroidxu3_defconfig

@@ -4243,7 +4243,7 @@ CONFIG_AVERAGE=y
 CONFIG_OID_REGISTRY=m
 # CONFIG_VIRTUALIZATION is not set
 CONFIG_BACKPORT_INTEGRATE=y
-CONFIG_BACKPORT_DIR="backports/"
+CONFIG_BACKPORT_DIR="backports"
 CONFIG_BACKPORT_VERSION="backports-20150222-0-g2745ccd"
 CONFIG_BACKPORT_KERNEL_VERSION="next-20150222-0-g53e418f1"
 CONFIG_BACKPORT_KERNEL_NAME="Linux"

backports/Kconfig

@@ -4,7 +4,7 @@ config BACKPORT_INTEGRATE
 
 config BACKPORT_DIR
 	string
-	default "backports/"
+	default "backports"
 
 config BACKPORT_VERSION
 	string

backports/Makefile

@@ -19,7 +19,12 @@ NOSTDINC_FLAGS := \
 
 export backport_srctree = $(M)
 else
-export BACKPORT_DIR = backports/
+ifneq ($(KBUILD_SRC),)
+	ifneq ($(wildcard $(KBUILD_SRC)/$(src)),)
+		TOP_KBUILD_SRC := $(KBUILD_SRC)/
+	endif
+endif
+export BACKPORT_DIR = $(TOP_KBUILD_SRC)backports
 export backport_srctree = $(BACKPORT_DIR)
 NOSTDINC_FLAGS := \
 	-I$(BACKPORT_DIR)/backport-include/ \