[patch] dynamic_debug: small clean up in ddebug_proc_write()

[Dan Carpenter]

This the 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@xxxxxxxxx>

diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index f935029..4482f9d 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -455,7 +455,7 @@ 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;
--
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