On Thu, 2016-10-27 at 21:01 +0200, Simon Wunderlich wrote:
> From: Sven Eckelmann <[email protected]>
>
> It must be avoided that arguments to a macro are evaluated ungrouped (which
> enforces normal operator precendence). Otherwise the result of the macro
> is not well defined.
Curiosity:
in net/batman-adv/tp_meter.c
static int batadv_tp_send(void *arg)
{
struct batadv_tp_vars *tp_vars = arg;
struct batadv_priv *bat_priv = tp_vars->bat_priv;
struct batadv_hard_iface *primary_if = NULL;
struct batadv_orig_node *orig_node = NULL;
size_t payload_len, packet_len;
int err = 0;
if (unlikely(tp_vars->role != BATADV_TP_SENDER)) {
err = BATADV_TP_REASON_DST_UNREACHABLE;
tp_vars->reason = err;
goto out;
}
orig_node = batadv_orig_hash_find(bat_priv, tp_vars->other_end);
if (unlikely(!orig_node)) {
err = BATADV_TP_REASON_DST_UNREACHABLE;
tp_vars->reason = err;
goto out;
}
primary_if = batadv_primary_if_get_selected(bat_priv);
if (unlikely(!primary_if)) {
err = BATADV_TP_REASON_DST_UNREACHABLE;
goto out;
}
err is not used in the out block
Is the last if block supposed to set tp_vars->reason to err?
