diff options
| -rw-r--r-- | sound/hda/hdac_i915.c | 14 |
1 files 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 @@ -75,14 +75,20 @@ static bool connectivity_check(struct pci_dev *i915, struct pci_dev *hdac) if (bus_a == bus_b) return true; - /* - * 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; + + /* 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_a == bus_b) |