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",