Can you apply the following patch and report back what the kernel
says? The following might generate quite a bit of log messages, but
if your boot drive doesn't generate spurious interrupts, it should be
bearable.
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index e261b37..be3ee0d 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -909,25 +909,18 @@ static void ahci_host_intr(struct ata_po
}
/* hmmm... a spurious interupt */
+ ata_port_printk(ap, KERN_INFO, "spurious interrupt "
+ "(irq_stat 0x%x active_tag %x sactive 0x%x)\n",
+ status, ap->active_tag, ap->sactive);
- /* some devices send D2H reg with I bit set during NCQ command phase */
- if (ap->sactive && status & PORT_IRQ_D2H_REG_FIS)
- return;
-
- /* ignore interim PIO setup fis interrupts */
- if (ata_tag_valid(ap->active_tag)) {
- struct ata_queued_cmd *qc =
- ata_qc_from_tag(ap, ap->active_tag);
+ if (status & PORT_IRQ_SDB_FIS) {
+ struct ahci_port_priv *pp = ap->private_data;
+ u32 *sdb_fis = pp->rx_fis + 0x58;
- if (qc && qc->tf.protocol == ATA_PROT_PIO &&
- (status & PORT_IRQ_PIOS_FIS))
- return;
+ ata_port_printk(ap, KERN_INFO, "spurious SDB FIS "
+ "%08x:%08x ap->qc_active=%08x qc_active=%08x\n",
+ sdb_fis[0], sdb_fis[1], ap->qc_active, qc_active);
}
-
- if (ata_ratelimit())
- ata_port_printk(ap, KERN_INFO, "spurious interrupt "
- "(irq_stat 0x%x active_tag %d sactive 0x%x)\n",
- status, ap->active_tag, ap->sactive);
}
static void ahci_irq_clear(struct ata_port *ap)
-
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