diff mbox series

[V5,03/16] scsi: lpfc: use sg helper to operate scatterlist

Message ID 20190618013757.22401-4-ming.lei@redhat.com (mailing list archive)
State Accepted
Headers show
Series use sg helper to operate scatterlist | expand

Commit Message

Ming Lei June 18, 2019, 1:37 a.m. UTC 
Use the scatterlist iterators and remove direct indexing of the
scatterlist array.

This way allows us to pre-allocate one small scatterlist, which can be
chained with one runtime allocated scatterlist if the pre-allocated one isn't
enough for the whole request.

Reviewed by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
 drivers/scsi/lpfc/lpfc_nvmet.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/scsi/lpfc/lpfc_nvmet.c b/drivers/scsi/lpfc/lpfc_nvmet.c
index f3d9a5545164..3f803982bd1e 100644
--- a/drivers/scsi/lpfc/lpfc_nvmet.c
+++ b/drivers/scsi/lpfc/lpfc_nvmet.c
@@ -2887,8 +2887,7 @@  lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba,
 	nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT;
 	nvmewqe->context1 = ndlp;
 
-	for (i = 0; i < rsp->sg_cnt; i++) {
-		sgel = &rsp->sg[i];
+	for_each_sg(rsp->sg, sgel, rsp->sg_cnt, i) {
 		physaddr = sg_dma_address(sgel);
 		cnt = sg_dma_len(sgel);
 		sgl->addr_hi = putPaddrHigh(physaddr);