Replace the deprecated one-element array with a modern flexible array member in the struct nvsp_1_message_send_receive_buffer_complete.
Use struct_size_t(,,1) instead of sizeof() to maintain the same size. Compile-tested only. Link: https://github.com/KSPP/linux/issues/79 Signed-off-by: Thorsten Blum <thorsten.b...@linux.dev> --- Changes in v2: - Replace sizeof() with struct_size_t(,,1) to maintain the same size after feedback from Roman Kisel (thanks!) - Link to v1: https://lore.kernel.org/r/20250116201635.47870-2-thorsten.b...@linux.dev/ --- drivers/net/hyperv/hyperv_net.h | 2 +- drivers/net/hyperv/netvsc.c | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h index e690b95b1bbb..234db693cefa 100644 --- a/drivers/net/hyperv/hyperv_net.h +++ b/drivers/net/hyperv/hyperv_net.h @@ -464,7 +464,7 @@ struct nvsp_1_message_send_receive_buffer_complete { * LargeOffset SmallOffset */ - struct nvsp_1_receive_buffer_section sections[1]; + struct nvsp_1_receive_buffer_section sections[]; } __packed; /* diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c index 9afb08dbc350..d6f5b9ea3109 100644 --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -866,7 +866,8 @@ static void netvsc_send_completion(struct net_device *ndev, case NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE: if (msglen < sizeof(struct nvsp_message_header) + - sizeof(struct nvsp_1_message_send_receive_buffer_complete)) { + struct_size_t(struct nvsp_1_message_send_receive_buffer_complete, + sections, 1)) { netdev_err(ndev, "nvsp_msg1 length too small: %u\n", msglen); return; -- 2.48.0
