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- From: Mieczyslaw Nalewaj <[email protected]>
- Date: Wed, 07 Jan 2026 01:30:15 +0100
- Subject: [PATCH] Silence unused-variable warnings in ipv6.h and tcp_input.c
- This patch silences compiler warnings about unused variables by explicitly
- casting them to void where appropriate.
- Signed-off-by: Mieczyslaw Nalewaj <[email protected]>
- ---
- include/net/ipv6.h | 6 ++++++
- net/ipv4/tcp_input.c | 7 +++++++
- 2 files changed, 13 insertions(+)
- --- a/include/net/ipv6.h
- +++ b/include/net/ipv6.h
- @@ -248,6 +248,8 @@ extern int sysctl_mld_qrv;
- struct inet6_dev *_idev = (idev); \
- unsigned long _field = (field); \
- unsigned long _val = (val); \
- + (void)_field; \
- + (void)_val; \
- if (likely(_idev != NULL)) \
- mod##SNMP_ADD_STATS((_idev)->stats.statname, _field, _val); \
- mod##SNMP_ADD_STATS((net)->mib.statname##_statistics, _field, _val);\
- @@ -257,6 +259,7 @@ extern int sysctl_mld_qrv;
- ({ \
- struct inet6_dev *_idev = (idev); \
- unsigned long _val = (val); \
- + (void)_val; \
- if (likely(_idev != NULL)) \
- mod##SNMP_UPD_PO_STATS((_idev)->stats.statname, field, _val); \
- mod##SNMP_UPD_PO_STATS((net)->mib.statname##_statistics, field, _val);\
- --- a/net/ipv4/tcp_input.c
- +++ b/net/ipv4/tcp_input.c
- @@ -3967,6 +3967,12 @@ static u32 tcp_newly_delivered(struct so
- struct tcp_sock *tp = tcp_sk(sk);
- u32 delivered;
-
- + /* ecn_count is only used when FLAG_ECE is set; in some build/config
- + * paths it may be unused and cause a compiler warning. Silence it
- + * explicitly here.
- + */
- + (void)ecn_count;
- +
- delivered = tp->delivered - prior_delivered;
- NET_ADD_STATS(net, LINUX_MIB_TCPDELIVERED, delivered);
-
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