diff options
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/sata_rcar.c | 24 |
1 files changed, 6 insertions, 18 deletions
diff --git a/drivers/ata/sata_rcar.c b/drivers/ata/sata_rcar.c index 889c25a6337..629b07c452c 100644 --- a/drivers/ata/sata_rcar.c +++ b/drivers/ata/sata_rcar.c @@ -474,11 +474,10 @@ static void sata_rcar_bmdma_fill_sg(struct ata_queued_cmd *qc) struct ata_port *ap = qc->ap; struct ata_bmdma_prd *prd = ap->bmdma_prd; struct scatterlist *sg; - unsigned int si, pi; + unsigned int si; - pi = 0; for_each_sg(qc->sg, sg, qc->n_elem, si) { - u32 addr, sg_len, len; + u32 addr, sg_len; /* * Note: h/w doesn't support 64-bit, so we unconditionally @@ -487,24 +486,13 @@ static void sata_rcar_bmdma_fill_sg(struct ata_queued_cmd *qc) addr = (u32)sg_dma_address(sg); sg_len = sg_dma_len(sg); - /* H/w transfer count is only 29 bits long, let's be careful */ - while (sg_len) { - len = sg_len; - if (len > 0x1ffffffe) - len = 0x1ffffffe; - - prd[pi].addr = cpu_to_le32(addr); - prd[pi].flags_len = cpu_to_le32(len); - VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", pi, addr, len); - - pi++; - sg_len -= len; - addr += len; - } + prd[si].addr = cpu_to_le32(addr); + prd[si].flags_len = cpu_to_le32(sg_len); + VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", si, addr, sg_len); } /* end-of-table flag */ - prd[pi - 1].addr |= cpu_to_le32(SATA_RCAR_DTEND); + prd[si - 1].addr |= cpu_to_le32(SATA_RCAR_DTEND); } static void sata_rcar_qc_prep(struct ata_queued_cmd *qc) |