linux-kernel - [patch] dynamic_debug: small clean up in ddebug_proc

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Date:	Sat, 6 Mar 2010 13:59:34 +0300
From:	Dan Carpenter <error27@...il.com>
To:	Jason Baron <jbaron@...hat.com>
Cc:	Greg Kroah-Hartman <gregkh@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Greg Banks <gnb@...bourne.sgi.com>,
	André Goddard Rosa <andre.goddard@...il.com>,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [patch] dynamic_debug: small clean up in ddebug_proc_write()

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@...il.com>

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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