From patchwork Sat Jan 9 13:20:11 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antonio Quartulli X-Patchwork-Id: 4899 Return-Path: Received-SPF: Permerror (SPF Permanent Error: Two or more type TXT spf records found.) identity=mailfrom; client-ip=5.148.176.57; helo=s1.neomailbox.net; envelope-from=a@unstable.cc; receiver=b.a.t.m.a.n@lists.open-mesh.org Authentication-Results: open-mesh.org; dmarc=none header.from=unstable.cc Received: from s1.neomailbox.net (s1.neomailbox.net [5.148.176.57]) by open-mesh.org (Postfix) with ESMTPS id 5EE0281AB4 for ; Sat, 9 Jan 2016 14:22:35 +0100 (CET) From: Antonio Quartulli To: davem@davemloft.net Date: Sat, 9 Jan 2016 21:20:11 +0800 Message-Id: <1452345621-15908-7-git-send-email-a@unstable.cc> In-Reply-To: <1452345621-15908-1-git-send-email-a@unstable.cc> References: <1452345621-15908-1-git-send-email-a@unstable.cc> Cc: netdev@vger.kernel.org, Simon Wunderlich , b.a.t.m.a.n@lists.open-mesh.org, Antonio Quartulli , Marek Lindner Subject: [B.A.T.M.A.N.] [PATCH 06/16] batman-adv: only call post function if something changed X-BeenThere: b.a.t.m.a.n@lists.open-mesh.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: The list for a Better Approach To Mobile Ad-hoc Networking List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 09 Jan 2016 13:22:35 -0000 From: Simon Wunderlich Currently, the post function is also called on errors or if there were no changes, which is redundant for the functions currently using these facilities. Signed-off-by: Simon Wunderlich Signed-off-by: Marek Lindner Signed-off-by: Antonio Quartulli --- net/batman-adv/sysfs.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c index 48e2aaddda49..fe87777fda8a 100644 --- a/net/batman-adv/sysfs.c +++ b/net/batman-adv/sysfs.c @@ -242,10 +242,13 @@ ssize_t batadv_show_vlan_##_name(struct kobject *kobj, \ static int batadv_store_bool_attr(char *buff, size_t count, struct net_device *net_dev, - const char *attr_name, atomic_t *attr) + const char *attr_name, atomic_t *attr, + bool *changed) { int enabled = -1; + *changed = false; + if (buff[count - 1] == '\n') buff[count - 1] = '\0'; @@ -272,6 +275,8 @@ static int batadv_store_bool_attr(char *buff, size_t count, atomic_read(attr) == 1 ? "enabled" : "disabled", enabled == 1 ? "enabled" : "disabled"); + *changed = true; + atomic_set(attr, (unsigned int)enabled); return count; } @@ -282,11 +287,12 @@ __batadv_store_bool_attr(char *buff, size_t count, struct attribute *attr, atomic_t *attr_store, struct net_device *net_dev) { + bool changed; int ret; ret = batadv_store_bool_attr(buff, count, net_dev, attr->name, - attr_store); - if (post_func && ret) + attr_store, &changed); + if (post_func && changed) post_func(net_dev); return ret;