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 Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx> --- drivers/scsi/hptiop.c | 8 +++----- 1 file 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; -- 2.34.1
