[PATCH V3 02/15] scsi: advansys: use sg helper to operate scatterlist

Ming Lei ming.lei at redhat.com
Fri Jun 14 02:53:03 UTC 2019


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 at redhat.com>
Signed-off-by: Ming Lei <ming.lei at redhat.com>
---
 drivers/scsi/advansys.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/advansys.c b/drivers/scsi/advansys.c
index d37584403c33..b87de8d3d844 100644
--- a/drivers/scsi/advansys.c
+++ b/drivers/scsi/advansys.c
@@ -7714,7 +7714,7 @@ adv_get_sglist(struct asc_board *boardp, adv_req_t *reqp,
 				sg_block->sg_ptr = 0L; /* Last ADV_SG_BLOCK in list. */
 				return ADV_SUCCESS;
 			}
-			slp++;
+			slp = sg_next(slp);
 		}
 		sg_block->sg_cnt = NO_OF_SG_PER_BLOCK;
 		prev_sg_block = sg_block;
-- 
2.20.1



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