7 files changed, 54 insertions, 18 deletions

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 034a94904d69..c81e0674e568 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -312,9 +312,13 @@ $(INSTALL_TARGETS):
         $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
 
 PHONY += dtbs dtbs_install
-dtbs dtbs_install: prepare scripts
+
+dtbs: prepare scripts
         $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $@
 
+dtbs_install:
+        $(Q)$(MAKE) $(dtbinst)=$(boot)/dts MACHINE=$(MACHINE)
+
 # We use MRPROPER_FILES and CLEAN_FILES now
 archclean:
         $(Q)$(MAKE) $(clean)=$(boot)
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 38c89cafa1ab..e0d348b4d1fa 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -527,5 +527,3 @@ dtbs: $(addprefix $(obj)/, $(dtb-y))
         $(Q)rm -f $(obj)/../*.dtb
 
 clean-files := *.dtb
-
-dtbs_install: $(addsuffix _dtbinst_, $(dtb-y))
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index a963b3a8fc34..8e9167a19b6b 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -71,9 +71,13 @@ zinstall install: vmlinux
         $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
 
 PHONY += dtbs dtbs_install
-dtbs dtbs_install: prepare scripts
+
+dtbs: prepare scripts
         $(Q)$(MAKE) $(build)=$(boot)/dts $@
 
+dtbs_install:
+        $(Q)$(MAKE) $(dtbinst)=$(boot)/dts
+
 PHONY += vdso_install
 vdso_install:
         $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@
diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile
index 3a75cdc2d087..29ac5adf50ae 100644
--- a/arch/arm64/boot/dts/Makefile
+++ b/arch/arm64/boot/dts/Makefile
@@ -8,5 +8,3 @@ targets += $(dtb-y)
 dtbs: $(addprefix $(obj)/, $(dtb-y))
 
 clean-files := *.dtb
-
-dtbs_install: $(addsuffix _dtbinst_, $(dtb-y))
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 65e7b08bb2cc..5374b1bdf02f 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -179,6 +179,12 @@ build := -f $(srctree)/scripts/Makefile.build obj
 # $(Q)$(MAKE) $(modbuiltin)=dir
 modbuiltin := -f $(srctree)/scripts/Makefile.modbuiltin obj
 
+###
+# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.dtbinst obj=
+# Usage:
+# $(Q)$(MAKE) $(dtbinst)=dir
+dtbinst := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.dtbinst obj
+
 # Prefix -I with $(srctree) if it is not an absolute path.
 # skip if -I has no parameter
 addtree = $(if $(patsubst -I%,%,$(1)), \
diff --git a/scripts/Makefile.dtbinst b/scripts/Makefile.dtbinst
new file mode 100644
index 000000000000..54286cccc289
--- /dev/null
+++ b/scripts/Makefile.dtbinst
@@ -0,0 +1,38 @@
+# ==========================================================================
+# Installing dtb files
+#
+# Installs all dtb files listed in $(dtb-y) either in the
+# INSTALL_DTBS_PATH directory or the default location:
+#
+#   $INSTALL_PATH/dtbs/$KERNELRELEASE
+#
+# ==========================================================================
+
+src := $(obj)
+
+PHONY := __dtbs_install
+__dtbs_install:
+
+include include/config/auto.conf
+include scripts/Kbuild.include
+include $(srctree)/$(obj)/Makefile
+
+PHONY += __dtbs_install_prep
+__dtbs_install_prep:
+        $(Q)if [ -d $(INSTALL_DTBS_PATH).old ]; then rm -rf $(INSTALL_DTBS_PATH).old; fi
+        $(Q)if [ -d $(INSTALL_DTBS_PATH) ]; then mv $(INSTALL_DTBS_PATH) $(INSTALL_DTBS_PATH).old; fi
+        $(Q)mkdir -p $(INSTALL_DTBS_PATH)
+
+dtbinst-files   := $(dtb-y)
+
+# Helper targets for Installing DTBs into the boot directory
+quiet_cmd_dtb_install = INSTALL $<
+      cmd_dtb_install = cp $< $(2)
+
+$(dtbinst-files): %.dtb: $(obj)/%.dtb | __dtbs_install_prep
+        $(call cmd,dtb_install,$(INSTALL_DTBS_PATH))
+
+PHONY += $(dtbinst-files)
+__dtbs_install: $(dtbinst-files)
+
+.PHONY: $(PHONY)
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 54be19a0fa51..511755200634 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -283,18 +283,6 @@ $(obj)/%.dtb: $(src)/%.dts FORCE
 
 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
 
-# Helper targets for Installing DTBs into the boot directory
-quiet_cmd_dtb_install = INSTALL $<
-      cmd_dtb_install = cp $< $(2)
-
-_dtbinst_pre_:
-        $(Q)if [ -d $(INSTALL_DTBS_PATH).old ]; then rm -rf $(INSTALL_DTBS_PATH).old; fi
-        $(Q)if [ -d $(INSTALL_DTBS_PATH) ]; then mv $(INSTALL_DTBS_PATH) $(INSTALL_DTBS_PATH).old; fi
-        $(Q)mkdir -p $(INSTALL_DTBS_PATH)
-
-%.dtb_dtbinst_: $(obj)/%.dtb _dtbinst_pre_
-        $(call cmd,dtb_install,$(INSTALL_DTBS_PATH))
-
 # Bzip2
 # ---------------------------------------------------------------------------