dynamic_debug: small cleanup in ddebug_proc_write()

This doesn't change behavior at all.  In the original code, if nwords was
zero then ddebug_parse_query() would return -EINVAL, now we just do it
earlier.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index d6b8b9b..3df8eb1 100644 (file)
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -456,7 +456,7 @@ static ssize_t ddebug_proc_write(struct file *file, const char __user *ubuf,
                        __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;