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libata: add ata_sg_is_last() helper, use it in several drivers

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This commit is contained in:
Jeff Garzik
2005-10-18 22:14:54 -04:00
parent b194b4250c
commit 972c26bdd6
4 changed files with 35 additions and 16 deletions
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8
drivers/scsi/pdc_adma.c
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@@ -293,14 +293,14 @@ static void adma_eng_timeout(struct ata_port *ap)
static int adma_fill_sg(struct ata_queued_cmd *qc)
{
struct scatterlist *sg = qc->sg;
struct scatterlist *sg;
struct ata_port *ap = qc->ap;
struct adma_port_priv *pp = ap->private_data;
u8 *buf = pp->pkt;
int nelem, i = (2 + buf[3]) * 8;
int i = (2 + buf[3]) * 8;
u8 pFLAGS = pORD | ((qc->tf.flags & ATA_TFLAG_WRITE) ? pDIRO : 0);
for (nelem = 0; nelem < qc->n_elem; nelem++,sg++) {
ata_for_each_sg(sg, qc) {
u32 addr;
u32 len;
@@ -312,7 +312,7 @@ static int adma_fill_sg(struct ata_queued_cmd *qc)
*(__le32 *)(buf + i) = cpu_to_le32(len);
i += 4;
if ((nelem + 1) == qc->n_elem)
if (ata_sg_is_last(sg, qc))
pFLAGS |= pEND;
buf[i++] = pFLAGS;
buf[i++] = qc->dev->dma_mode & 0xf;