From: Joe Perches <joe@perches.com>
To: Simon Wunderlich <sw@simonwunderlich.de>, davem@davemloft.net
Cc: netdev@vger.kernel.org, b.a.t.m.a.n@lists.open-mesh.org
Subject: Re: [B.A.T.M.A.N.] [PATCH 17/17] batman-adv: Avoid precedence issues in macros
Date: Fri, 28 Oct 2016 14:13:06 -0700 [thread overview]
Message-ID: <1477689186.23018.1.camel@perches.com> (raw)
In-Reply-To: <20161027190150.7880-18-sw@simonwunderlich.de>
On Thu, 2016-10-27 at 21:01 +0200, Simon Wunderlich wrote:
> From: Sven Eckelmann <sven@narfation.org>
>
> 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?
next prev parent reply other threads:[~2016-10-28 21:13 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-27 19:01 [B.A.T.M.A.N.] [PATCH 00/17] pull request for net-next: batman-adv 2016-10-27 Simon Wunderlich
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 01/17] batman-adv: Start new development cycle Simon Wunderlich
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 02/17] batman-adv: Add B.A.T.M.A.N. V sysfs files to README Simon Wunderlich
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 03/17] batman-adv: Add network_coding and mcast " Simon Wunderlich
2016-10-29 10:33 ` Jiri Pirko
2016-10-29 10:37 ` Sven Eckelmann
2016-10-29 10:56 ` Jiri Pirko
2016-10-29 11:46 ` Sven Eckelmann
2016-10-29 13:51 ` Jiri Pirko
2018-03-27 15:43 ` Linus Lüssing
2018-05-07 6:34 ` Sven Eckelmann
2018-05-20 4:37 ` Sven Eckelmann
2018-05-20 6:19 ` Jiri Pirko
2018-08-04 9:24 ` Antonio Quartulli
2018-08-04 9:36 ` Jiri Pirko
2018-08-04 11:19 ` Antonio Quartulli
2018-08-04 11:52 ` Jiri Pirko
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 04/17] batman-adv: Add dat, mcast, nc and neighbor debugfs " Simon Wunderlich
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 05/17] batman-adv: Document new nc, mcast and tpmeter log levels Simon Wunderlich
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 06/17] batman-adv: Remove unused function batadv_hash_delete Simon Wunderlich
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 07/17] batman-adv: Move batadv_sum_counter to soft-interface.c Simon Wunderlich
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 08/17] batman-adv: Remove unused batadv_icmp_user_cmd_type Simon Wunderlich
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 09/17] batman-adv: fix batadv_forw_packet kerneldoc for list attribute Simon Wunderlich
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 10/17] batman-adv: remove unsed argument from batadv_dbg_arp() function Simon Wunderlich
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 11/17] batman-adv: Allow selecting BATMAN V if CFG80211 is not built Simon Wunderlich
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 12/17] batman-adv: Less function calls in batadv_is_ap_isolated() after error detection Simon Wunderlich
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 13/17] batman-adv: Remove needless init of variables on stack Simon Wunderlich
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 14/17] batman-adv: Use proper name for fragments list head Simon Wunderlich
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 15/17] batman-adv: Use proper name for gateway " Simon Wunderlich
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 16/17] batman-adv: Use octal permissions instead of macros Simon Wunderlich
2016-10-27 19:01 ` [B.A.T.M.A.N.] [PATCH 17/17] batman-adv: Avoid precedence issues in macros Simon Wunderlich
2016-10-28 21:13 ` Joe Perches [this message]
2016-10-28 21:27 ` Sven Eckelmann
2016-10-29 1:56 ` Joe Perches
2016-10-29 6:52 ` Sven Eckelmann
2016-10-29 20:28 ` [B.A.T.M.A.N.] [PATCH 00/17] pull request for net-next: batman-adv 2016-10-27 David Miller
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