#include <linux/uaccess.h>
#include <linux/dynamic_debug.h>
#include <linux/debugfs.h>
+#include <linux/slab.h>
extern struct _ddebug __start___verbose[];
extern struct _ddebug __stop___verbose[];
__func__, (int)len);
nwords = ddebug_tokenize(tmpbuf, words, MAXWORDS);
- if (nwords < 0)
+ if (nwords <= 0)
return -EINVAL;
if (ddebug_parse_query(words, nwords-1, &query))
return -EINVAL;