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| author |   Gustavo A. R. Silva <gustavoars@kernel.org> | 2021-05-25 18:00:38 -0500 |
|---|---|---|
| committer |   Tony Nguyen <anthony.l.nguyen@intel.com> | 2021-05-26 16:16:17 -0700 |
| commit | 125217e0967fc905be35a3b2c9ba4db9a8616b92 (patch) | |
| tree | 87b52e4b4dc330e01723b76fb5d2f8fa7c7116b6 | |
| parent | Linux 5.13-rc1 (diff) | |
| download | linux-dev-125217e0967fc905be35a3b2c9ba4db9a8616b92.tar.xz linux-dev-125217e0967fc905be35a3b2c9ba4db9a8616b92.zip | |
i40e: Replace one-element array with flexible-array member
There is a regular need in the kernel to provide a way to declare having a
dynamically sized set of trailing elements in a structure. Kernel code
should always use “flexible array members”[1] for these cases. The older
style of one-element or zero-length arrays should no longer be used[2].
Refactor the code according to the use of a flexible-array member in struct
i40e_qvlist_info instead of one-element array, and use the struct_size()
helper.
[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.10/process/deprecated.html#zero-length-and-one-element-arrays
Link: https://github.com/KSPP/linux/issues/79
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
| -rw-r--r-- | drivers/infiniband/hw/i40iw/i40iw_main.c | 5 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_client.c | 2 | ||||
| -rw-r--r-- | include/linux/net/intel/i40e_client.h | 2 |
3 files changed, 4 insertions, 5 deletions
diff --git a/drivers/infiniband/hw/i40iw/i40iw_main.c b/drivers/infiniband/hw/i40iw/i40iw_main.c index b496f30ce066..364f69cd620f 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_main.c +++ b/drivers/infiniband/hw/i40iw/i40iw_main.c @@ -1423,7 +1423,7 @@ static enum i40iw_status_code i40iw_save_msix_info(struct i40iw_device *iwdev, struct i40e_qv_info *iw_qvinfo; u32 ceq_idx; u32 i; - u32 size; + size_t size; if (!ldev->msix_count) { i40iw_pr_err("No MSI-X vectors\n"); @@ -1433,8 +1433,7 @@ static enum i40iw_status_code i40iw_save_msix_info(struct i40iw_device *iwdev, iwdev->msix_count = ldev->msix_count; size = sizeof(struct i40iw_msix_vector) * iwdev->msix_count; - size += sizeof(struct i40e_qvlist_info); - size += sizeof(struct i40e_qv_info) * iwdev->msix_count - 1; + size += struct_size(iw_qvlist, qv_info, iwdev->msix_count); iwdev->iw_msixtbl = kzalloc(size, GFP_KERNEL); if (!iwdev->iw_msixtbl) diff --git a/drivers/net/ethernet/intel/i40e/i40e_client.c b/drivers/net/ethernet/intel/i40e/i40e_client.c index 32f3facbed1a..63eab14a26df 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_client.c +++ b/drivers/net/ethernet/intel/i40e/i40e_client.c @@ -579,7 +579,7 @@ static int i40e_client_setup_qvlist(struct i40e_info *ldev, u32 v_idx, i, reg_idx, reg; ldev->qvlist_info = kzalloc(struct_size(ldev->qvlist_info, qv_info, - qvlist_info->num_vectors - 1), GFP_KERNEL); + qvlist_info->num_vectors), GFP_KERNEL); if (!ldev->qvlist_info) return -ENOMEM; ldev->qvlist_info->num_vectors = qvlist_info->num_vectors; diff --git a/include/linux/net/intel/i40e_client.h b/include/linux/net/intel/i40e_client.h index f41387a8969f..fd7bc860a241 100644 --- a/include/linux/net/intel/i40e_client.h +++ b/include/linux/net/intel/i40e_client.h @@ -48,7 +48,7 @@ struct i40e_qv_info { struct i40e_qvlist_info { u32 num_vectors; - struct i40e_qv_info qv_info[1]; + struct i40e_qv_info qv_info[]; }; |