1 files changed, 14 insertions, 11 deletions

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 0b5d3a5b7ed..63d3f70d06e 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -1253,11 +1253,11 @@ void __sata_phy_reset(struct ata_port *ap)
 	unsigned long timeout = jiffies + (HZ * 5);
 
 	if (ap->flags & ATA_FLAG_SATA_RESET) {
-		scr_write(ap, SCR_CONTROL, 0x301); /* issue phy wake/reset */
-		scr_read(ap, SCR_STATUS);	/* dummy read; flush */
+		/* issue phy wake/reset */
+		scr_write_flush(ap, SCR_CONTROL, 0x301);
 		udelay(400);			/* FIXME: a guess */
 	}
-	scr_write(ap, SCR_CONTROL, 0x300);	/* issue phy wake/clear reset */
+	scr_write_flush(ap, SCR_CONTROL, 0x300); /* phy wake/clear reset */
 
 	/* wait for phy to become ready, if necessary */
 	do {
@@ -2071,7 +2071,7 @@ void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, unsigned int buflen)
 	sg = qc->sg;
 	sg->page = virt_to_page(buf);
 	sg->offset = (unsigned long) buf & ~PAGE_MASK;
-	sg_dma_len(sg) = buflen;
+	sg->length = buflen;
 }
 
 void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
@@ -2101,11 +2101,12 @@ static int ata_sg_setup_one(struct ata_queued_cmd *qc)
 	dma_addr_t dma_address;
 
 	dma_address = dma_map_single(ap->host_set->dev, qc->buf_virt,
-				     sg_dma_len(sg), dir);
+				     sg->length, dir);
 	if (dma_mapping_error(dma_address))
 		return -1;
 
 	sg_dma_address(sg) = dma_address;
+	sg_dma_len(sg) = sg->length;
 
 	DPRINTK("mapped buffer of %d bytes for %s\n", sg_dma_len(sg),
 		qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");
@@ -2310,7 +2311,7 @@ static void ata_pio_sector(struct ata_queued_cmd *qc)
 	qc->cursect++;
 	qc->cursg_ofs++;
 
-	if ((qc->cursg_ofs * ATA_SECT_SIZE) == sg_dma_len(&sg[qc->cursg])) {
+	if ((qc->cursg_ofs * ATA_SECT_SIZE) == (&sg[qc->cursg])->length) {
 		qc->cursg++;
 		qc->cursg_ofs = 0;
 	}
@@ -2347,7 +2348,7 @@ next_page:
 	page = nth_page(page, (offset >> PAGE_SHIFT));
 	offset %= PAGE_SIZE;
 
-	count = min(sg_dma_len(sg) - qc->cursg_ofs, bytes);
+	count = min(sg->length - qc->cursg_ofs, bytes);
 
 	/* don't cross page boundaries */
 	count = min(count, (unsigned int)PAGE_SIZE - offset);
@@ -2358,7 +2359,7 @@ next_page:
 	qc->curbytes += count;
 	qc->cursg_ofs += count;
 
-	if (qc->cursg_ofs == sg_dma_len(sg)) {
+	if (qc->cursg_ofs == sg->length) {
 		qc->cursg++;
 		qc->cursg_ofs = 0;
 	}
@@ -2371,7 +2372,7 @@ next_page:
 	kunmap(page);
 
 	if (bytes) {
-		if (qc->cursg_ofs < sg_dma_len(sg))
+		if (qc->cursg_ofs < sg->length)
 			goto next_page;
 		goto next_sg;
 	}
@@ -2539,7 +2540,7 @@ static void atapi_request_sense(struct ata_port *ap, struct ata_device *dev,
 	ata_sg_init_one(qc, cmd->sense_buffer, sizeof(cmd->sense_buffer));
 	qc->dma_dir = DMA_FROM_DEVICE;
 
-	memset(&qc->cdb, 0, sizeof(ap->cdb_len));
+	memset(&qc->cdb, 0, ap->cdb_len);
 	qc->cdb[0] = REQUEST_SENSE;
 	qc->cdb[4] = SCSI_SENSE_BUFFERSIZE;
 
@@ -2811,6 +2812,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat)
 
 	/* call completion callback */
 	rc = qc->complete_fn(qc, drv_stat);
+	qc->flags &= ~ATA_QCFLAG_ACTIVE;
 
 	/* if callback indicates not to complete command (non-zero),
 	 * return immediately
@@ -3229,7 +3231,8 @@ irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs)
 			struct ata_queued_cmd *qc;
 
 			qc = ata_qc_from_tag(ap, ap->active_tag);
-			if (qc && (!(qc->tf.ctl & ATA_NIEN)))
+			if (qc && (!(qc->tf.ctl & ATA_NIEN)) &&
+			    (qc->flags & ATA_QCFLAG_ACTIVE))
 				handled |= ata_host_intr(ap, qc);
 		}
 	}