ALSA: hda - Add enable_msi=0 workaround for four HP machines
authorDavid Henningsson <david.henningsson@canonical.com>
Thu, 12 Dec 2013 08:52:03 +0000 (09:52 +0100)
committerTakashi Iwai <tiwai@suse.de>
Thu, 12 Dec 2013 16:46:39 +0000 (17:46 +0100)
commit693e0cb052c607e2d41edf9e9f1fa99ff8c266c1
tree39215a0f14dce3ec7b41cee935e3ecd4561855dc
parent3690739b013504d33fe9348dd45f6b126aa370fb
ALSA: hda - Add enable_msi=0 workaround for four HP machines

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.

Cc: stable@vger.kernel.org
BugLink: https://bugs.launchpad.net/bugs/1260225
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/pci/hda/hda_intel.c