The current way isn't safe for chained sgl, so use sg helper to
operate sgl.
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
---
drivers/scsi/ipr.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index d06bc1a817a1..028db6bd0280 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -3952,6 +3952,7 @@ static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
struct scatterlist *scatterlist = sglist->scatterlist;
+ struct scatterlist *sg;
int i;
ipr_cmd->dma_use_sg = sglist->num_dma_sg;
@@ -3960,10 +3961,10 @@ static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
ioarcb->ioadl_len =
cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
- for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
+ for_each_sg(scatterlist, sg, ipr_cmd->dma_use_sg, i) {
ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
- ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
- ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
+ ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
+ ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
}
ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
--
2.20.1
