uml: const and other tidying

This patch also does some improvements for uml code.  Improvements include
dropping unnecessary cast, killing some unnecessary code and still some
constifying for pointers etc..

Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 3 deletions

diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index c7ea7f2a8945..91bd68eaba20 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -60,8 +60,6 @@ unsigned long alloc_stack(int order, int atomic)
         if (atomic)
                 flags = GFP_ATOMIC;
         page = __get_free_pages(flags, order);
-        if (page == 0)
-                return 0;
 
         return page;
 }
@@ -331,7 +329,7 @@ void do_uml_exitcalls(void)
                 (*call)();
 }
 
-char *uml_strdup(char *string)
+char *uml_strdup(const char *string)
 {
         return kstrdup(string, GFP_KERNEL);
 }