This is a note to let you know that I've just added the patch titled
ALSA: hda: Fix position reporting on Poulsbo
to the 4.9-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-fix-position-reporting-on-poulsbo.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 56e696c0f0c71b77fff921fc94b58a02f0445b2c Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@xxxxxxx>
Date: Sat, 1 Oct 2022 16:21:24 +0200
Subject: ALSA: hda: Fix position reporting on Poulsbo
From: Takashi Iwai <tiwai@xxxxxxx>
commit 56e696c0f0c71b77fff921fc94b58a02f0445b2c upstream.
Hans reported that his Sony VAIO VPX11S1E showed the broken sound
behavior at the start of the stream for a couple of seconds, and it
turned out that the position_fix=1 option fixes the issue. It implies
that the position reporting is inaccurate, and very likely hitting on
all Poulsbo devices.
The patch applies the workaround for Poulsbo generically to switch to
LPIB mode instead of the default position buffer.
Reported-and-tested-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/3e8697e1-87c6-7a7b-d2e8-b21f1d2f181b@xxxxxxxxxx
Link: https://lore.kernel.org/r/20221001142124.7241-1-tiwai@xxxxxxx
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/pci/hda/hda_intel.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2320,7 +2320,8 @@ static const struct pci_device_id azx_id
.driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM },
/* Poulsbo */
{ PCI_DEVICE(0x8086, 0x811b),
- .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE },
+ .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE |
+ AZX_DCAPS_POSFIX_LPIB },
/* Oaktrail */
{ PCI_DEVICE(0x8086, 0x080a),
.driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE },
Patches currently in stable-queue which might be from tiwai@xxxxxxx are
queue-4.9/alsa-hda-fix-position-reporting-on-poulsbo.patch
