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path: root/drivers/scsi/sata_mv.c
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Diffstat (limited to 'drivers/scsi/sata_mv.c')
-rw-r--r--drivers/scsi/sata_mv.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c
index bb2409e761d0..65dc65304f51 100644
--- a/drivers/scsi/sata_mv.c
+++ b/drivers/scsi/sata_mv.c
@@ -1380,12 +1380,12 @@ static void mv_host_intr(struct ata_host_set *host_set, u32 relevant,
struct ata_port *ap = host_set->ports[port];
struct mv_port_priv *pp = ap->private_data;
- hard_port = port & MV_PORT_MASK; /* range 0-3 */
+ hard_port = mv_hardport_from_port(port); /* range 0..3 */
handled = 0; /* ensure ata_status is set if handled++ */
/* Note that DEV_IRQ might happen spuriously during EDMA,
- * and should be ignored in such cases. We could mask it,
- * but it's pretty rare and may not be worth the overhead.
+ * and should be ignored in such cases.
+ * The cause of this is still under investigation.
*/
if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) {
/* EDMA: check for response queue interrupt */
@@ -1399,6 +1399,11 @@ static void mv_host_intr(struct ata_host_set *host_set, u32 relevant,
ata_status = readb((void __iomem *)
ap->ioaddr.status_addr);
handled = 1;
+ /* ignore spurious intr if drive still BUSY */
+ if (ata_status & ATA_BUSY) {
+ ata_status = 0;
+ handled = 0;
+ }
}
}