diff options
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/hpsa.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index a23277d24383..7915dc45a37c 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -3236,6 +3236,17 @@ out: kfree(id_phys); } +static void hpsa_set_sg_descriptor(struct SGDescriptor *desc, + struct scatterlist *sg) +{ + u64 addr64 = (u64) sg_dma_address(sg); + unsigned int len = sg_dma_len(sg); + + desc->Addr = cpu_to_le64(addr64); + desc->Len = cpu_to_le32(len); + desc->Ext = 0; +} + /* * hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci * dma mapping and fills in the scatter gather entries of the @@ -3245,9 +3256,7 @@ static int hpsa_scatter_gather(struct ctlr_info *h, struct CommandList *cp, struct scsi_cmnd *cmd) { - unsigned int len; struct scatterlist *sg; - u64 addr64; int use_sg, i, sg_index, chained; struct SGDescriptor *curr_sg; @@ -3270,13 +3279,11 @@ static int hpsa_scatter_gather(struct ctlr_info *h, curr_sg = h->cmd_sg_list[cp->cmdindex]; sg_index = 0; } - addr64 = (u64) sg_dma_address(sg); - len = sg_dma_len(sg); - curr_sg->Addr = cpu_to_le64(addr64); - curr_sg->Len = cpu_to_le32(len); - curr_sg->Ext = cpu_to_le32(0); + hpsa_set_sg_descriptor(curr_sg, sg); curr_sg++; } + + /* Back the pointer up to the last entry and mark it as "last". */ (--curr_sg)->Ext = cpu_to_le32(HPSA_SG_LAST); if (use_sg + chained > h->maxSG) |