scsi: lpfc: Use memset_startat() helper

Use memset_startat() helper to simplify the code, no functional changes in
this patch.

Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Link: https://lore.kernel.org/r/20221111074310.132125-1-xiujianfeng@huawei.com
Reviewed-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index d25afc9dde142b6c2edb6eade043eee1f3cddda9..35c9404d5e49dba1fd52df0e240370e261882f9d 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -1373,7 +1373,6 @@ static void
 __lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
 {
        struct lpfc_sglq *sglq;
-       size_t start_clean = offsetof(struct lpfc_iocbq, wqe);
        unsigned long iflag = 0;
        struct lpfc_sli_ring *pring;
 
@@ -1430,7 +1429,7 @@ out:
        /*
         * Clean all volatile data fields, preserve iotag and node struct.
         */
-       memset((char *)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
+       memset_startat(iocbq, 0, wqe);
        iocbq->sli4_lxritag = NO_XRI;
        iocbq->sli4_xritag = NO_XRI;
        iocbq->cmd_flag &= ~(LPFC_IO_NVME | LPFC_IO_NVMET | LPFC_IO_CMF |
@@ -1453,12 +1452,11 @@ out:
 static void
 __lpfc_sli_release_iocbq_s3(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
 {
-       size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
 
        /*
         * Clean all volatile data fields, preserve iotag and node struct.
         */
-       memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
+       memset_startat(iocbq, 0, iocb);
        iocbq->sli4_xritag = NO_XRI;
        list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
 }