ARM: imx6q: build pm code only when CONFIG_PM selected

Signed-off-by: Eric Miao <eric.miao@linaro.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/mach-imx/Kconfig

@@ -595,6 +595,7 @@ comment "i.MX6 family:"
 
 config SOC_IMX6Q
 	bool "i.MX6 Quad support"
+	select ARM_CPU_SUSPEND if PM
 	select ARM_GIC
 	select CACHE_L2X0
 	select CPU_V7

arch/arm/mach-imx/Makefile

@@ -70,4 +70,8 @@ AFLAGS_head-v7.o :=-Wa,-march=armv7-a
 obj-$(CONFIG_SMP) += platsmp.o
 obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
 obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o
-obj-$(CONFIG_SOC_IMX6Q) += clock-imx6q.o mach-imx6q.o pm-imx6q.o
+obj-$(CONFIG_SOC_IMX6Q) += clock-imx6q.o mach-imx6q.o
+
+ifeq ($(CONFIG_PM),y)
+obj-$(CONFIG_SOC_IMX6Q) += pm-imx6q.o
+endif

arch/arm/mach-imx/head-v7.S

@@ -71,6 +71,7 @@ ENTRY(v7_secondary_startup)
 ENDPROC(v7_secondary_startup)
 #endif
 
+#ifdef CONFIG_PM
 /*
  * The following code is located into the .data section.  This is to
  * allow phys_l2x0_saved_regs to be accessed with a relative load
@@ -97,3 +98,4 @@ ENDPROC(v7_cpu_resume)
 	.globl	phys_l2x0_saved_regs
 phys_l2x0_saved_regs:
         .long   0
+#endif

arch/arm/plat-mxc/include/mach/common.h

@@ -131,6 +131,12 @@ extern void imx53_evk_common_init(void);
 extern void imx53_qsb_common_init(void);
 extern void imx53_smd_common_init(void);
 extern int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode);
-extern void imx6q_pm_init(void);
 extern void imx6q_clock_map_io(void);
+
+#ifdef CONFIG_PM
+extern void imx6q_pm_init(void);
+#else
+static inline void imx6q_pm_init(void) {}
+#endif
+
 #endif