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From: Antonio Quartulli
To: davem@davemloft.net
Date: Sat, 9 Jan 2016 21:20:11 +0800
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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
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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;