linux-kernel - [PATCH 1/3] kbuild: remove unnecessary "obj- := dummy.o" trick

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Date:	Tue,  9 Sep 2014 19:26:19 +0900
From:	Masahiro Yamada <yamada.m@...panasonic.com>
To:	linux-kbuild@...r.kernel.org
Cc:	Masahiro Yamada <yamada.m@...panasonic.com>,
	Ben Dooks <ben-linux@...ff.org>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Russell King <linux@....linux.org.uk>,
	Mike Turquette <mturquette@...aro.org>,
	Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
	Simon Horman <horms+renesas@...ge.net.au>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Wolfram Sang <wsa@...g-engineering.com>,
	Takashi Yoshii <takasi-y@....dti.ne.jp>,
	Ulrich Hecht <ulrich.hecht@...il.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: [PATCH 1/3] kbuild: remove unnecessary "obj- := dummy.o" trick

In these Makefiles, at least one of "obj-y" and "obj-" is non-empty,
hence built-in.o is always created without such a trick.

Signed-off-by: Masahiro Yamada <yamada.m@...panasonic.com>
---

 arch/arm/plat-samsung/Makefile | 1 -
 drivers/clk/shmobile/Makefile  | 2 --
 drivers/net/wimax/Makefile     | 4 ----
 3 files changed, 7 deletions(-)

diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile
index 5fe1750..a402262 100644
--- a/arch/arm/plat-samsung/Makefile
+++ b/arch/arm/plat-samsung/Makefile
@@ -8,7 +8,6 @@ ccflags-$(CONFIG_ARCH_MULTI_V7) += -I$(srctree)/$(src)/include
 
 obj-y				:=
 obj-m				:=
-obj-n				:= dummy.o
 obj-				:=
 
 # Objects we always build independent of SoC choice
diff --git a/drivers/clk/shmobile/Makefile b/drivers/clk/shmobile/Makefile
index e002923..9aab51c8 100644
--- a/drivers/clk/shmobile/Makefile
+++ b/drivers/clk/shmobile/Makefile
@@ -6,5 +6,3 @@ obj-$(CONFIG_ARCH_R8A7790)		+= clk-rcar-gen2.o
 obj-$(CONFIG_ARCH_R8A7791)		+= clk-rcar-gen2.o
 obj-$(CONFIG_ARCH_SHMOBILE_MULTI)	+= clk-div6.o
 obj-$(CONFIG_ARCH_SHMOBILE_MULTI)	+= clk-mstp.o
-# for emply built-in.o
-obj-n	:= dummy
diff --git a/drivers/net/wimax/Makefile b/drivers/net/wimax/Makefile
index 992bc02..692184d 100644
--- a/drivers/net/wimax/Makefile
+++ b/drivers/net/wimax/Makefile
@@ -1,5 +1 @@
-
 obj-$(CONFIG_WIMAX_I2400M)	+= i2400m/
-
-# (from Sam Ravnborg) force kbuild to create built-in.o
-obj- := dummy.o
-- 
1.9.1

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