[MIPS] Fix oprofile module unloading

When unloading oprofile module with timer-mode, oprofile_arch_exit
dereferences a NULL pointer.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/oprofile/common.c b/arch/mips/oprofile/common.c
index 935dd851f480c0065c37d4275c71f40b663aab5b..49ef8fd338d62984d1f97066286b03e9b6c17df1 100644 (file)
--- a/arch/mips/oprofile/common.c
+++ b/arch/mips/oprofile/common.c
@@ -114,5 +114,6 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
 
 void oprofile_arch_exit(void)
 {
-       model->exit();
+       if (model)
+               model->exit();
 }