Patch enables unsolicited responses on the HDA controller. Without
the UREN bit set, the controller will not place unsolicited responses
in a RIRB.

Signed-off-by: Matt <matt <at> embeddedalley.com>

Index: alsa-kernel/pci/hda/hda_intel.c
===================================================================
RCS file: /cvsroot/alsa/alsa-kernel/pci/hda/hda_intel.c,v
retrieving revision 1.12
diff -u -r1.12 hda_intel.c
--- alsa-kernel/pci/hda/hda_intel.c	13 Jun 2005 13:16:39 -0000	1.12
+++ alsa-kernel/pci/hda/hda_intel.c	1 Jul 2005 14:34:10 -0000
@@ -178,6 +178,9 @@
 #define ICH6_INT_CTRL_EN	0x40000000	/* controller interrupt enable bit */
 #define ICH6_INT_GLOBAL_EN	0x80000000	/* global interrupt enable bit */

+/* GCTL unsolicited response enable bit */
+#define ICH6_GCTL_UREN		(1<<8)
+
 /* GCTL reset bit */
 #define ICH6_GCTL_RESET		(1<<0)

@@ -562,6 +565,9 @@
 		return -EBUSY;
 	}

+	/* Accept unsolicited responses */
+	azx_writel(chip, GCTL, azx_readl(chip, GCTL) | ICH6_GCTL_UREN);
+
 	/* detect codecs */
 	if (! chip->codec_mask) {
 		chip->codec_mask = azx_readw(chip, STATESTS);

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