The uniform structure filter_arg sets its union based on the difference
of enum filter_arg_type, However, some functions use implicit type
conversion obviously.
warning: implicit conversion from enumeration type 'enum filter_exp_type'
	 to different enumeration type 'enum filter_op_type'
warning: implicit conversion from enumeration type 'enum filter_cmp_type'
	 to different enumeration type 'enum filter_exp_type'
Link: http://lkml.kernel.org/r/1509938415-113825-1-git-send-email-cj.chengjian@huawei.com
Signed-off-by: Cheng Jian <cj.chengjian@huawei.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Xie XiuQi <xiexiuqi@huawei.com>
Cc: Li Bin <huawei.libin@huawei.com>
Cc: Steven Rostedt (Red Hat) <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
                return NULL;
 
        arg->type = FILTER_ARG_EXP;
-       arg->op.type = etype;
+       arg->exp.type = etype;
 
        return arg;
 }
 
 static struct filter_arg *
-create_arg_cmp(enum filter_exp_type etype)
+create_arg_cmp(enum filter_cmp_type ctype)
 {
        struct filter_arg *arg;
 
 
        /* Use NUM and change if necessary */
        arg->type = FILTER_ARG_NUM;
-       arg->op.type = etype;
+       arg->num.type = ctype;
 
        return arg;
 }