ARM: provide a late_initcall hook for platform initialization

This allows platforms to set up things that need to be done at
late_initcall time.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Robert Lee <rob.lee@linaro.org>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>

2 files changed, 9 insertions, 0 deletions

diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h
index d7692cafde7f..0b1c94b8c652 100644
--- a/arch/arm/include/asm/mach/arch.h
+++ b/arch/arm/include/asm/mach/arch.h
@@ -43,6 +43,7 @@ struct machine_desc {
         void                    (*init_irq)(void);
         struct sys_timer        *timer;         /* system tick timer    */
         void                    (*init_machine)(void);
+        void                    (*init_late)(void);
 #ifdef CONFIG_MULTI_IRQ_HANDLER
         void                    (*handle_irq)(struct pt_regs *);
 #endif
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index ebfac782593f..549f036a5cf8 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -800,6 +800,14 @@ static int __init customize_machine(void)
 }
 arch_initcall(customize_machine);
 
+static int __init init_machine_late(void)
+{
+        if (machine_desc->init_late)
+                machine_desc->init_late();
+        return 0;
+}
+late_initcall(init_machine_late);
+
 #ifdef CONFIG_KEXEC
 static inline unsigned long long get_total_mem(void)
 {