From: Emese Revfy <re.emese@gmail.com>

Constify struct kgdb_arch with some exceptions.

Signed-off-by: Emese Revfy <re.emese@gmail.com>
---
 arch/arm/kernel/kgdb.c      |    2 +-
 arch/blackfin/kernel/kgdb.c |    2 +-
 arch/mips/kernel/kgdb.c     |    1 +
 arch/powerpc/kernel/kgdb.c  |    4 ++--
 arch/sh/kernel/kgdb.c       |    2 +-
 arch/sparc/kernel/kgdb_32.c |    2 +-
 arch/sparc/kernel/kgdb_64.c |    2 +-
 arch/x86/kernel/kgdb.c      |    2 +-
 include/linux/kgdb.h        |    2 +-
 9 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/arch/arm/kernel/kgdb.c b/arch/arm/kernel/kgdb.c
index ba8ccfe..2dc34dc 100644
--- a/arch/arm/kernel/kgdb.c
+++ b/arch/arm/kernel/kgdb.c
@@ -190,7 +190,7 @@ void kgdb_arch_exit(void)
  * and we handle the normal undef case within the do_undefinstr
  * handler.
  */
-struct kgdb_arch arch_kgdb_ops = {
+const struct kgdb_arch arch_kgdb_ops = {
 #ifndef __ARMEB__
 	.gdb_bpt_instr		= {0xfe, 0xde, 0xff, 0xe7}
 #else /* ! __ARMEB__ */
diff --git a/arch/blackfin/kernel/kgdb.c b/arch/blackfin/kernel/kgdb.c
index cce79d0..c406c85 100644
--- a/arch/blackfin/kernel/kgdb.c
+++ b/arch/blackfin/kernel/kgdb.c
@@ -428,7 +428,7 @@ int kgdb_arch_handle_exception(int vector, int signo,
 	return -1;		/* this means that we do not want to exit from the handler */
 }
 
-struct kgdb_arch arch_kgdb_ops = {
+const struct kgdb_arch arch_kgdb_ops = {
 	.gdb_bpt_instr = {0xa1},
 #ifdef CONFIG_SMP
 	.flags = KGDB_HW_BREAKPOINT|KGDB_THR_PROC_SWAP,
diff --git a/arch/mips/kernel/kgdb.c b/arch/mips/kernel/kgdb.c
index 50c9bb8..efdd5f8 100644
--- a/arch/mips/kernel/kgdb.c
+++ b/arch/mips/kernel/kgdb.c
@@ -245,6 +245,7 @@ int kgdb_arch_handle_exception(int vector, int signo, int err_code,
 	return -1;
 }
 
+/* cannot be const */
 struct kgdb_arch arch_kgdb_ops;
 
 /*
diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c
index 641c74b..8339ad7 100644
--- a/arch/powerpc/kernel/kgdb.c
+++ b/arch/powerpc/kernel/kgdb.c
@@ -126,7 +126,7 @@ static int kgdb_handle_breakpoint(struct pt_regs *regs)
 	if (kgdb_handle_exception(0, SIGTRAP, 0, regs) != 0)
 		return 0;
 
-	if (*(u32 *) (regs->nip) == *(u32 *) (&arch_kgdb_ops.gdb_bpt_instr))
+	if (*(u32 *) (regs->nip) == *(const u32 *) (&arch_kgdb_ops.gdb_bpt_instr))
 		regs->nip += 4;
 
 	return 1;
@@ -353,7 +353,7 @@ int kgdb_arch_handle_exception(int vector, int signo, int err_code,
 /*
  * Global data
  */
-struct kgdb_arch arch_kgdb_ops = {
+const struct kgdb_arch arch_kgdb_ops = {
 	.gdb_bpt_instr = {0x7d, 0x82, 0x10, 0x08},
 };
 
diff --git a/arch/sh/kernel/kgdb.c b/arch/sh/kernel/kgdb.c
index 3e532d0..9faa306 100644
--- a/arch/sh/kernel/kgdb.c
+++ b/arch/sh/kernel/kgdb.c
@@ -271,7 +271,7 @@ void kgdb_arch_exit(void)
 {
 }
 
-struct kgdb_arch arch_kgdb_ops = {
+const struct kgdb_arch arch_kgdb_ops = {
 	/* Breakpoint instruction: trapa #0x3c */
 #ifdef CONFIG_CPU_LITTLE_ENDIAN
 	.gdb_bpt_instr		= { 0x3c, 0xc3 },
diff --git a/arch/sparc/kernel/kgdb_32.c b/arch/sparc/kernel/kgdb_32.c
index 04df4ed..55c4b6e 100644
--- a/arch/sparc/kernel/kgdb_32.c
+++ b/arch/sparc/kernel/kgdb_32.c
@@ -158,7 +158,7 @@ void kgdb_arch_exit(void)
 {
 }
 
-struct kgdb_arch arch_kgdb_ops = {
+const struct kgdb_arch arch_kgdb_ops = {
 	/* Breakpoint instruction: ta 0x7d */
 	.gdb_bpt_instr		= { 0x91, 0xd0, 0x20, 0x7d },
 };
diff --git a/arch/sparc/kernel/kgdb_64.c b/arch/sparc/kernel/kgdb_64.c
index f5a0fd4..d886f71 100644
--- a/arch/sparc/kernel/kgdb_64.c
+++ b/arch/sparc/kernel/kgdb_64.c
@@ -180,7 +180,7 @@ void kgdb_arch_exit(void)
 {
 }
 
-struct kgdb_arch arch_kgdb_ops = {
+const struct kgdb_arch arch_kgdb_ops = {
 	/* Breakpoint instruction: ta 0x72 */
 	.gdb_bpt_instr		= { 0x91, 0xd0, 0x20, 0x72 },
 };
diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index 8d82a77..92e532c 100644
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -573,7 +573,7 @@ unsigned long kgdb_arch_pc(int exception, struct pt_regs *regs)
 	return instruction_pointer(regs);
 }
 
-struct kgdb_arch arch_kgdb_ops = {
+const struct kgdb_arch arch_kgdb_ops = {
 	/* Breakpoint instruction: */
 	.gdb_bpt_instr		= { 0xcc },
 	.flags			= KGDB_HW_BREAKPOINT,
diff --git a/include/linux/kgdb.h b/include/linux/kgdb.h
index 6adcc29..360613c 100644
--- a/include/linux/kgdb.h
+++ b/include/linux/kgdb.h
@@ -259,7 +259,7 @@ struct kgdb_io {
 	void			(*post_exception) (void);
 };
 
-extern struct kgdb_arch		arch_kgdb_ops;
+extern const struct kgdb_arch arch_kgdb_ops;
 
 extern unsigned long __weak kgdb_arch_pc(int exception, struct pt_regs *regs);