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

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/scsi/pdc_adma.c b/drivers/scsi/pdc_adma.c
index 53b8db4be1a9..c6825da6ae20 100644
--- a/drivers/scsi/pdc_adma.c
+++ b/drivers/scsi/pdc_adma.c
@@ -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;