--- /dev/null
+From 693e0cb052c607e2d41edf9e9f1fa99ff8c266c1 Mon Sep 17 00:00:00 2001
+From: David Henningsson <david.henningsson@canonical.com>
+Date: Thu, 12 Dec 2013 09:52:03 +0100
+Subject: ALSA: hda - Add enable_msi=0 workaround for four HP machines
+
+From: David Henningsson <david.henningsson@canonical.com>
+
+commit 693e0cb052c607e2d41edf9e9f1fa99ff8c266c1 upstream.
+
+While enabling these machines, we found we would sometimes lose an
+interrupt if we change hardware volume during playback, and that
+disabling msi fixed this issue. (Losing the interrupt caused underruns
+and crackling audio, as the one second timeout is usually bigger than
+the period size.)
+
+The machines were all machines from HP, running AMD Hudson controller,
+and Realtek ALC282 codec.
+
+BugLink: https://bugs.launchpad.net/bugs/1260225
+Signed-off-by: David Henningsson <david.henningsson@canonical.com>
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ sound/pci/hda/hda_intel.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/sound/pci/hda/hda_intel.c
++++ b/sound/pci/hda/hda_intel.c
+@@ -3332,6 +3332,10 @@ static void check_probe_mask(struct azx
+ * white/black-list for enable_msi
+ */
+ static struct snd_pci_quirk msi_black_list[] = {
++ SND_PCI_QUIRK(0x103c, 0x2191, "HP", 0), /* AMD Hudson */
++ SND_PCI_QUIRK(0x103c, 0x2192, "HP", 0), /* AMD Hudson */
++ SND_PCI_QUIRK(0x103c, 0x21f7, "HP", 0), /* AMD Hudson */
++ SND_PCI_QUIRK(0x103c, 0x21fa, "HP", 0), /* AMD Hudson */
+ SND_PCI_QUIRK(0x1043, 0x81f2, "ASUS", 0), /* Athlon64 X2 + nvidia */
+ SND_PCI_QUIRK(0x1043, 0x81f6, "ASUS", 0), /* nvidia */
+ SND_PCI_QUIRK(0x1043, 0x822d, "ASUS", 0), /* Athlon64 X2 + nvidia MCP55 */