On Sun, 2014-06-29 at 00:06 +0530, Himangi Saraogi wrote:
> kasprintf combines kmalloc and sprintf, and takes care of the size
> calculation itself.
Nice. A small conversion to remove
unnecessary initializations, avoid calling
kfree with known NULL pointers, and save a
few bytes of code space woud be:
---
net/batman-adv/sysfs.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c
index f40cb04..d6fba94 100644
--- a/net/batman-adv/sysfs.c
+++ b/net/batman-adv/sysfs.c
@@ -896,7 +896,7 @@ int batadv_throw_uevent(struct batadv_priv *bat_priv, enum
batadv_uev_type type,
{
int ret = -ENOMEM;
struct kobject *bat_kobj;
- char *uevent_env[4] = { NULL, NULL, NULL, NULL };
+ char *uevent_env[3];
bat_kobj = &bat_priv->soft_iface->dev.kobj;
@@ -910,22 +910,23 @@ int batadv_throw_uevent(struct batadv_priv *bat_priv,
enum batadv_uev_type type,
"%s%s", BATADV_UEV_ACTION_VAR,
batadv_uev_action_str[action]);
if (!uevent_env[1])
- goto out;
+ goto out0;
/* If the event is DEL, ignore the data field */
if (action != BATADV_UEV_DEL) {
uevent_env[2] = kasprintf(GFP_ATOMIC,
"%s%s", BATADV_UEV_DATA_VAR, data);
if (!uevent_env[2])
- goto out;
+ goto out1;
}
ret = kobject_uevent_env(bat_kobj, KOBJ_CHANGE, uevent_env);
-out:
- kfree(uevent_env[0]);
- kfree(uevent_env[1]);
kfree(uevent_env[2]);
-
+out1:
+ kfree(uevent_env[1]);
+out0:
+ kfree(uevent_env[0]);
+out:
if (ret)
batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
"Impossible to send uevent for (%s,%s,%s) event
(err: %d)\n",
--
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