[PATCH] fix create_write_pipe() error check

The return value of create_write_pipe()/create_read_pipe() should be
checked by IS_ERR().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/kernel/kmod.c b/kernel/kmod.c
index bb4e29d924e4ff29567a962e7b643e0c1c875896..2b76dee284964c82ca42a81b2ddd1463f72d001d 100644 (file)
--- a/kernel/kmod.c
+++ b/kernel/kmod.c
@@ -307,14 +307,14 @@ int call_usermodehelper_pipe(char *path, char **argv, char **envp,
                return 0;
 
        f = create_write_pipe();
-       if (!f)
-               return -ENOMEM;
+       if (IS_ERR(f))
+               return PTR_ERR(f);
        *filp = f;
 
        f = create_read_pipe(f);
-       if (!f) {
+       if (IS_ERR(f)) {
                free_write_pipe(*filp);
-               return -ENOMEM;
+               return PTR_ERR(f);
        }
        sub_info.stdin = f;