---
 drivers/ata/sata_sil.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

Index: tree0/drivers/ata/sata_sil.c
===================================================================
--- tree0.orig/drivers/ata/sata_sil.c
+++ tree0/drivers/ata/sata_sil.c
@@ -390,11 +390,15 @@ static void sil_host_intr(struct ata_por
 			ap->eh_info.serror |= serror;
 		}
 
+		ata_port_printk(ap, KERN_INFO, "XXX SATA_IRQ, serror=0x%x\n",
+				serror);
 		goto freeze;
 	}
 
-	if (unlikely(!qc))
+	if (unlikely(!qc)) {
+		ata_port_printk(ap, KERN_INFO, "XXX DMA completion w/o qc\n");
 		goto freeze;
+	}
 
 	if (unlikely(qc->tf.flags & ATA_TFLAG_POLLING)) {
 		/* this sometimes happens, just clear IRQ */