diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 6e61a01..9c774c5 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1418,6 +1418,7 @@ static irqreturn_t azx_interrupt(int irq, void *dev_id)
 		return IRQ_NONE;
 	}
 	
+	printk(KERN_INFO "hda-intel REAL IRQ on %s: we have to poll %d streams\n", pci_name(chip->pci), chip->num_streams);
 	for (i = 0; i < chip->num_streams; i++) {
 		azx_dev = &chip->azx_dev[i];
 		if (status & azx_dev->sd_int_sta_mask) {
@@ -1426,8 +1427,15 @@ static irqreturn_t azx_interrupt(int irq, void *dev_id)
 			if (!azx_dev->substream || !azx_dev->running ||
 			    !(sd_status & SD_INT_COMPLETE))
 				continue;
+			printk(KERN_INFO "hda-intel looking at stream %d\n", i);
 			/* check whether this IRQ is really acceptable */
 			ok = azx_position_ok(chip, azx_dev);
+			printk(KERN_INFO "hda-intel azx_position_ok result = %d\n", ok);
+			if (!chip->bus)
+				printk(KERN_INFO "hda-intel chip has no bus\n");
+			if (!(chip->bus && chip->bus->workq))
+				printk(KERN_INFO "hda-intel chip bus has no workq\n");
+
 			if (ok == 1) {
 				azx_dev->irq_pending = 0;
 				spin_unlock(&chip->reg_lock);
@@ -2489,19 +2497,26 @@ static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev)
 	unsigned int pos;
 
 	wallclk = azx_readl(chip, WALLCLK) - azx_dev->start_wallclk;
-	if (wallclk < (azx_dev->period_wallclk * 2) / 3)
+	printk(KERN_INFO "hda-intel azx_position_ok: wallclk = %u, period_wallclk = %u\n", wallclk, azx_dev->period_wallclk);
+	if (wallclk < (azx_dev->period_wallclk * 2) / 3) {
+		printk(KERN_INFO "hda-intel azx_position_ok: bogus (too early) interrupt\n");
 		return -1;	/* bogus (too early) interrupt */
+	}
 
 	pos = azx_get_position(chip, azx_dev, true);
+	printk(KERN_INFO "hda-intel azx_position_ok: pos = %u, period_bytes = %u\n", pos, azx_dev->period_bytes);
 
 	if (WARN_ONCE(!azx_dev->period_bytes,
 		      "hda-intel: zero azx_dev->period_bytes"))
 		return -1; /* this shouldn't happen! */
 	if (wallclk < (azx_dev->period_wallclk * 5) / 4 &&
-	    pos % azx_dev->period_bytes > azx_dev->period_bytes / 2)
+	    pos % azx_dev->period_bytes > azx_dev->period_bytes / 2) {
 		/* NG - it's below the first next period boundary */
+		printk(KERN_INFO "hda-intel azx_position_ok: dubious interrupt\n");
 		return bdl_pos_adj[chip->dev_index] ? 0 : -1;
+	}
 	azx_dev->start_wallclk += wallclk;
+	printk(KERN_INFO "hda-intel azx_position_ok: good interrupt\n");
 	return 1; /* OK, it's fine */
 }
 
@@ -2524,13 +2539,16 @@ static void azx_irq_pending_work(struct work_struct *work)
 	for (;;) {
 		pending = 0;
 		spin_lock_irq(&chip->reg_lock);
+		printk(KERN_INFO "hda-intel PENDING IRQ on %s: we have to poll %d streams\n", pci_name(chip->pci), chip->num_streams);
 		for (i = 0; i < chip->num_streams; i++) {
 			struct azx_dev *azx_dev = &chip->azx_dev[i];
 			if (!azx_dev->irq_pending ||
 			    !azx_dev->substream ||
 			    !azx_dev->running)
 				continue;
+			printk(KERN_INFO "hda-intel looking at stream %d\n", i);
 			ok = azx_position_ok(chip, azx_dev);
+			printk(KERN_INFO "hda-intel azx_position_ok result = %d\n", ok);
 			if (ok > 0) {
 				azx_dev->irq_pending = 0;
 				spin_unlock(&chip->reg_lock);
@@ -2544,6 +2562,7 @@ static void azx_irq_pending_work(struct work_struct *work)
 		spin_unlock_irq(&chip->reg_lock);
 		if (!pending)
 			return;
+		printk(KERN_INFO "hda-intel PENDING IRQ on %s: sleeping\n", pci_name(chip->pci));
 		msleep(1);
 	}
 }