sctp: Allow regular C expression in 4th argument for SCTP_DEBUG_PRINTK_IPADDR macro.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Acked-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 4 deletions

diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index b2c2366676a7..0037e28e80e5 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -285,20 +285,21 @@ do {							\
                 pr_cont(fmt, ##args);                   \
 } while (0)
 #define SCTP_DEBUG_PRINTK_IPADDR(fmt_lead, fmt_trail,                   \
-                                 args_lead, saddr, args_trail...)       \
+                                 args_lead, addr, args_trail...)        \
 do {                                                                    \
+        const union sctp_addr *_addr = (addr);                          \
         if (sctp_debug_flag) {                                          \
-                if (saddr->sa.sa_family == AF_INET6) {                  \
+                if (_addr->sa.sa_family == AF_INET6) {                  \
                         printk(KERN_DEBUG                               \
                                pr_fmt(fmt_lead "%pI6" fmt_trail),       \
                                args_lead,                               \
-                               &saddr->v6.sin6_addr,                    \
+                               &_addr->v6.sin6_addr,                    \
                                args_trail);                             \
                 } else {                                                \
                         printk(KERN_DEBUG                               \
                                pr_fmt(fmt_lead "%pI4" fmt_trail),       \
                                args_lead,                               \
-                               &saddr->v4.sin_addr.s_addr,              \
+                               &_addr->v4.sin_addr.s_addr,              \
                                args_trail);                             \
                 }                                                       \
         }                                                               \