diff mbox series

[next] mlxfw: Replace zero-length array with DECLARE_FLEX_ARRAY() helper

Message ID ZGKGiBxP0zHo6XSK@work
State New
Headers
Series [next] mlxfw: Replace zero-length array with DECLARE_FLEX_ARRAY() helper |

Commit Message

Gustavo A. R. Silva May 15, 2023, 7:22 p.m. UTC 
  Zero-length arrays are deprecated and we are moving towards adopting
C99 flexible-array members, instead. So, replace zero-length arrays
declarations alone in structs with the new DECLARE_FLEX_ARRAY()
helper macro.

This helper allows for flexible-array members alone in structs.

Link: https://github.com/KSPP/linux/issues/193
Link: https://github.com/KSPP/linux/issues/285
Link: https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
 drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2_format.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Ido Schimmel May 16, 2023, 7:23 a.m. UTC | #1 
On Mon, May 15, 2023 at 01:22:48PM -0600, Gustavo A. R. Silva wrote:
> Zero-length arrays are deprecated and we are moving towards adopting
> C99 flexible-array members, instead. So, replace zero-length arrays
> declarations alone in structs with the new DECLARE_FLEX_ARRAY()
> helper macro.
> 
> This helper allows for flexible-array members alone in structs.
> 
> Link: https://github.com/KSPP/linux/issues/193
> Link: https://github.com/KSPP/linux/issues/285
> Link: https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>

Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Kees Cook May 16, 2023, 6:18 p.m. UTC | #2 
On Mon, May 15, 2023 at 01:22:48PM -0600, Gustavo A. R. Silva wrote:
> Zero-length arrays are deprecated and we are moving towards adopting
> C99 flexible-array members, instead. So, replace zero-length arrays
> declarations alone in structs with the new DECLARE_FLEX_ARRAY()
> helper macro.
> 
> This helper allows for flexible-array members alone in structs.
> 
> Link: https://github.com/KSPP/linux/issues/193
> Link: https://github.com/KSPP/linux/issues/285
> Link: https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>

Reviewed-by: Kees Cook <keescook@chromium.org>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2_format.h b/drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2_format.h
index b001e5258091..47f6cc0401c3 100644
--- a/drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2_format.h
+++ b/drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2_format.h
@@ -44,7 +44,7 @@  MLXFW_MFA2_TLV(multi, struct mlxfw_mfa2_tlv_multi,
 	       MLXFW_MFA2_TLV_MULTI_PART);
 
 struct mlxfw_mfa2_tlv_psid {
-	u8 psid[0];
+	DECLARE_FLEX_ARRAY(u8, psid);
 } __packed;
 
 MLXFW_MFA2_TLV_VARSIZE(psid, struct mlxfw_mfa2_tlv_psid,