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authorGustavo A. R. Silva <gustavoars@kernel.org>2022-09-22 18:55:33 +0200
committerMartin K. Petersen <martin.petersen@oracle.com>2022-09-25 19:02:23 +0200
commit5b12a568cc6f69bfd9f7286d6e9c3e47392d240b (patch)
treefb5866719342e3b6814fb6492e9e91837fbbda72 /drivers/scsi
parentscsi: hptiop: Replace one-element array with flexible-array member (diff)
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scsi: hptiop: Use struct_size() helper in code related to struct hpt_iop_request_scsi_command
Prefer struct_size() over open-coded versions of idiom: sizeof(struct-with-flex-array) + sizeof(typeof-flex-array-elements) * count where count is the max number of items the flexible array is supposed to contain. Link: https://github.com/KSPP/linux/issues/160 Link: https://lore.kernel.org/r/54e2bb1e39b21394c5a90cacbadfb6136b012788.1663865333.git.gustavoars@kernel.org Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/hptiop.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/scsi/hptiop.c b/drivers/scsi/hptiop.c
index cfc6546e35a6..7e8903718245 100644
--- a/drivers/scsi/hptiop.c
+++ b/drivers/scsi/hptiop.c
@@ -1044,9 +1044,7 @@ static int hptiop_queuecommand_lck(struct scsi_cmnd *scp)
req->channel = scp->device->channel;
req->target = scp->device->id;
req->lun = scp->device->lun;
- req->header.size = cpu_to_le32(
- sizeof(struct hpt_iop_request_scsi_command)
- + sg_count * sizeof(struct hpt_iopsg));
+ req->header.size = cpu_to_le32(struct_size(req, sg_list, sg_count));
memcpy(req->cdb, scp->cmnd, sizeof(req->cdb));
hba->ops->post_req(hba, _req);
@@ -1396,8 +1394,8 @@ static int hptiop_probe(struct pci_dev *pcidev, const struct pci_device_id *id)
host->cmd_per_lun = le32_to_cpu(iop_config.max_requests);
host->max_cmd_len = 16;
- req_size = sizeof(struct hpt_iop_request_scsi_command)
- + sizeof(struct hpt_iopsg) * hba->max_sg_descriptors;
+ req_size = struct_size((struct hpt_iop_request_scsi_command *)0,
+ sg_list, hba->max_sg_descriptors);
if ((req_size & 0x1f) != 0)
req_size = (req_size + 0x1f) & ~0x1f;