From: Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx> Expand the HDA/I915 connectivity check to correctly handle the PCI topology used in some Intel Arrow Lake products. Reviewed-by: Bard Liao <yung-chuan.liao@xxxxxxxxxxxxxxx> Tested-by: "T, Arun" <arun.t@xxxxxxxxx> Signed-off-by: Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx> --- sound/hda/hdac_i915.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index 2a451ff4fe6a..b428537f284c 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -75,16 +75,22 @@ static bool connectivity_check(struct pci_dev *i915, struct pci_dev *hdac) if (bus_a == bus_b) return true; + bus_a = bus_a->parent; + bus_b = bus_b->parent; + + /* connected via parent bus (may be NULL!) */ + if (bus_a == bus_b) + return true; + + if (!bus_a || !bus_b) + return false; + /* * on i915 discrete GPUs with embedded HDA audio, the two * devices are connected via 2nd level PCI bridge */ bus_a = bus_a->parent; bus_b = bus_b->parent; - if (!bus_a || !bus_b) - return false; - bus_a = bus_a->parent; - bus_b = bus_b->parent; if (bus_a && bus_a == bus_b) return true; -- 2.39.2
