[PATCH] sparseirq: mvoe two weak functions to chip.c

Impact: fix panic

some gcc compiler will remove the weak global blank function
Linus noted that we could move those function to other unit to workaround it.

try to workaround it:
1. one time path: add printk
2. multi time path: move to chip.c

Signed-off-by: Yinghai Lu <yinghai@kernel.org>

diff --git a/init/main.c b/init/main.c
index d0c5e02..6a7a308 100644
--- a/init/main.c
+++ b/init/main.c
@@ -542,14 +542,11 @@ void __init __weak thread_info_cache_init(void)
 {
 }
 
-int __init __weak arch_early_irq_init(void)
-{
-	return 0;
-}
-
 int __init __weak early_irq_init(void)
 {
-	return arch_early_irq_init();
+	printk(KERN_DEBUG "calling __weak early_irq_init()\n");
+
+	return 0;
 }
 
 asmlinkage void __init start_kernel(void)
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index f63c706..2ba0c84 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -18,6 +18,16 @@
 
 #include "internals.h"
 
+int __init __weak arch_early_irq_init(void)
+{
+	return 0;
+}
+
+int __weak arch_init_chip_data(struct irq_desc *desc, int cpu)
+{
+	return 0;
+}
+
 /**
  *	dynamic_irq_init - initialize a dynamically allocated irq
  *	@irq:	irq number to initialize
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 157c04c..c20db0b 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -86,11 +86,6 @@ void init_kstat_irqs(struct irq_desc *desc, int cpu, int nr)
 		desc->kstat_irqs = (unsigned int *)ptr;
 }
 
-int __weak arch_init_chip_data(struct irq_desc *desc, int cpu)
-{
-	return 0;
-}
-
 static void init_one_irq_desc(int irq, struct irq_desc *desc, int cpu)
 {
 	memcpy(desc, &irq_desc_init, sizeof(struct irq_desc));