diff -r bf8d84bb62bc pci/rme9652/hdsp.c
--- a/pci/rme9652/hdsp.c	Tue Feb 19 16:13:03 2008 +0100
+++ b/pci/rme9652/hdsp.c	Wed Feb 20 19:33:57 2008 +0100
@@ -643,6 +643,35 @@ static void hdsp_write(struct hdsp *hdsp
 
 static unsigned int hdsp_read(struct hdsp *hdsp, int reg)
 {
+	/* Big dirty hack.
+	 * On some archs (Intel DG33BU), when 9632 has got AI4S and(?) AO4S and
+	 * some non-null signal is sent to channels 1&3 or channels 2&4 of AO4S
+	 * (yes, strange conditions!), for some mysterious reason, the whole
+	 * card io space is from time to time read as 0xffffffff. This bad read
+	 * happens only once (from my experience), and next bad reading is
+	 * "several" reads after. Allowing 10 bad reads is more than enough. By
+	 * chance, 0xffffffff is not possible as a status and status2 read (the
+	 * most sensitive registers for PCM) and RME 9632.
+	 * This behavior has been checked by writing samples directly to mmaped
+	 * memory (at playback buffer address) and reading io space the same
+	 * way, so bypassing all alsa stuff.
+	 * Anyay, in all cases, we can wait reading something else than
+	 * 0xffffffff, and if we read 10 consecutive times 0xffffffff, we
+	 * consider this is the true value
+	 */
+	if (hdsp->io_type == H9632)
+	{
+		unsigned int val;
+		int count = 10;
+		
+		while (count-- > 0)
+		{
+			val = readl(hdsp->iobase + reg);
+			if (val != 0xffffffff)
+				break;
+		}
+		return val;
+	}
 	return readl (hdsp->iobase + reg);
 }
 
@@ -3298,8 +3327,10 @@ snd_hdsp_proc_read(struct snd_info_entry
 	status2 = hdsp_read(hdsp, HDSP_status2Register);
 
 	snd_iprintf(buffer, "%s (Card #%d)\n", hdsp->card_name, hdsp->card->number + 1);
-	snd_iprintf(buffer, "Buffers: capture %p playback %p\n",
-		    hdsp->capture_buffer, hdsp->playback_buffer);
+	snd_iprintf(buffer, "Buffers: capture %p playback %p (physical %p %p)\n",
+		    hdsp->capture_buffer, hdsp->playback_buffer,
+		ALIGN(hdsp->capture_dma_buf.addr, 0x10000ul),
+		ALIGN(hdsp->playback_dma_buf.addr, 0x10000ul));
 	snd_iprintf(buffer, "IRQ: %d Registers bus: 0x%lx VM: 0x%lx\n",
 		    hdsp->irq, hdsp->port, (unsigned long)hdsp->iobase);
 	snd_iprintf(buffer, "Control register: 0x%x\n", hdsp->control_register);