From: Gustavo A. R. Silva Date: Tue, 9 Sep 2025 12:13:35 +0000 (+0200) Subject: Bluetooth: Avoid a couple dozen -Wflex-array-member-not-at-end warnings X-Git-Tag: v6.18-rc1~132^2~26^2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=be812ace0378a9db86344ad637c5ed2a5d11f216;p=thirdparty%2Fkernel%2Fstable.git Bluetooth: Avoid a couple dozen -Wflex-array-member-not-at-end warnings -Wflex-array-member-not-at-end was introduced in GCC-14, and we are getting ready to enable it, globally. Use the __struct_group() helper to fix 31 instances of the following type of warnings: 30 net/bluetooth/mgmt_config.c:16:33: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] 1 net/bluetooth/mgmt_config.c:22:33: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] Signed-off-by: Gustavo A. R. Silva Reviewed-by: Simon Horman Signed-off-by: Luiz Augusto von Dentz --- diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h index 3575cd16049a8..74edea06985bf 100644 --- a/include/net/bluetooth/mgmt.h +++ b/include/net/bluetooth/mgmt.h @@ -53,10 +53,15 @@ struct mgmt_hdr { } __packed; struct mgmt_tlv { - __le16 type; - __u8 length; + /* New members MUST be added within the __struct_group() macro below. */ + __struct_group(mgmt_tlv_hdr, __hdr, __packed, + __le16 type; + __u8 length; + ); __u8 value[]; } __packed; +static_assert(offsetof(struct mgmt_tlv, value) == sizeof(struct mgmt_tlv_hdr), + "struct member likely outside of __struct_group()"); struct mgmt_addr_info { bdaddr_t bdaddr; diff --git a/net/bluetooth/mgmt_config.c b/net/bluetooth/mgmt_config.c index 6ef701c27da48..c4063d200c0a6 100644 --- a/net/bluetooth/mgmt_config.c +++ b/net/bluetooth/mgmt_config.c @@ -13,13 +13,13 @@ #define HDEV_PARAM_U16(_param_name_) \ struct {\ - struct mgmt_tlv entry; \ + struct mgmt_tlv_hdr entry; \ __le16 value; \ } __packed _param_name_ #define HDEV_PARAM_U8(_param_name_) \ struct {\ - struct mgmt_tlv entry; \ + struct mgmt_tlv_hdr entry; \ __u8 value; \ } __packed _param_name_