This is a note to let you know that I've just added the patch titled
ALSA: hda - Add enable_msi=0 workaround for four HP machines
to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
alsa-hda-add-enable_msi-0-workaround-for-four-hp-machines.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 693e0cb052c607e2d41edf9e9f1fa99ff8c266c1 Mon Sep 17 00:00:00 2001
From: David Henningsson <david.henningsson@xxxxxxxxxxxxx>
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@xxxxxxxxxxxxx>
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@xxxxxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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 */
Patches currently in stable-queue which might be from david.henningsson@xxxxxxxxxxxxx are
queue-3.10/alsa-hda-add-enable_msi-0-workaround-for-four-hp-machines.patch
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