fix "modules: make module_address_lookup() safe"

Get the constness right, avoid nasty cast.

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/kernel/module.c b/kernel/module.c
index 676c023c831b..4202da97a1da 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2253,7 +2253,7 @@ static const char *get_ksymbol(struct module *mod,
 
 /* For kallsyms to ask for address resolution.  NULL means not found.  Careful
  * not to lock to avoid deadlock on oopses, simply disable preemption. */
-char *module_address_lookup(unsigned long addr,
+const char *module_address_lookup(unsigned long addr,
                             unsigned long *size,
                             unsigned long *offset,
                             char **modname,
@@ -2278,7 +2278,7 @@ char *module_address_lookup(unsigned long addr,
                 ret = namebuf;
         }
         preempt_enable();
-        return (char *)ret;
+        return ret;
 }
 
 int lookup_module_symbol_name(unsigned long addr, char *symname)