[PATCH 1/4][next] i40e: Replace one-element array with flex-array member in struct i40e_package_header

["Gustavo A. R. Silva" <gustavoars@kernel.org>]

One-element and zero-length arrays are deprecated. So, replace
one-element array in struct i40e_package_header with flexible-array
member.

The `+ sizeof(u32)` adjustments ensure that there are no differences
in binary output.

Link: https://github.com/KSPP/linux/issues/335
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
 drivers/net/ethernet/intel/i40e/i40e_ddp.c  | 4 ++--
 drivers/net/ethernet/intel/i40e/i40e_type.h | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_ddp.c b/drivers/net/ethernet/intel/i40e/i40e_ddp.c
index 7e8183762fd9..0db6f5e3cfcc 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_ddp.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_ddp.c
@@ -220,7 +220,7 @@ static bool i40e_ddp_is_pkg_hdr_valid(struct net_device *netdev,
 		netdev_err(netdev, "Invalid DDP profile - size is bigger than 4G");
 		return false;
 	}
-	if (size < (sizeof(struct i40e_package_header) +
+	if (size < (sizeof(struct i40e_package_header) + sizeof(u32) +
 		sizeof(struct i40e_metadata_segment) + sizeof(u32) * 2)) {
 		netdev_err(netdev, "Invalid DDP profile - size is too small.");
 		return false;
@@ -281,7 +281,7 @@ int i40e_ddp_load(struct net_device *netdev, const u8 *data, size_t size,
 	if (!i40e_ddp_is_pkg_hdr_valid(netdev, pkg_hdr, size))
 		return -EINVAL;
 
-	if (size < (sizeof(struct i40e_package_header) +
+	if (size < (sizeof(struct i40e_package_header) + sizeof(u32) +
 		    sizeof(struct i40e_metadata_segment) + sizeof(u32) * 2)) {
 		netdev_err(netdev, "Invalid DDP recipe size.");
 		return -EINVAL;
diff --git a/drivers/net/ethernet/intel/i40e/i40e_type.h b/drivers/net/ethernet/intel/i40e/i40e_type.h
index 388c3d36d96a..c3d5fe12059a 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_type.h
+++ b/drivers/net/ethernet/intel/i40e/i40e_type.h
@@ -1456,7 +1456,7 @@ struct i40e_ddp_version {
 struct i40e_package_header {
 	struct i40e_ddp_version version;
 	u32 segment_count;
-	u32 segment_offset[1];
+	u32 segment_offset[];
 };
 
 /* Generic segment header */
-- 
2.34.1