From: Kai Vehmanen kai.vehmanen@linux.intel.com

[ Upstream commit f3416e7144f5d4ba0fc5dcef6ebfff891266c46a ]

Align SOF HDA implementation with snd-hda-intel driver and enable sync_write flag for all supported Intel platforms in SOF. When set, a sync is issued after each verb write.

Sync after write has helped to overcome intermittent delays in system resume flow on Intel Coffee Lake systems, and most recently probe errors related to the HDMI codec on Ice Lake systems.

Matches the snd-hda-intel driver change done in commit 2756d9143aa5 ("ALSA: hda - Fix intermittent CORB/RIRB stall on Intel chips").

Signed-off-by: Kai Vehmanen kai.vehmanen@linux.intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Link: https://lore.kernel.org/r/20191008164443.1358-2-pierre-louis.bossart@linux.i... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/sof/intel/hda.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c index 06e84679087bc..5a5163eef2ef4 100644 --- a/sound/soc/sof/intel/hda.c +++ b/sound/soc/sof/intel/hda.c @@ -268,6 +268,7 @@ static int hda_init(struct snd_sof_dev *sdev)

bus->use_posbuf = 1; bus->bdl_pos_adj = 0; + bus->sync_write = 1;

mutex_init(&hbus->prepare_mutex); hbus->pci = pci;