diff options
Diffstat (limited to 'sound/hda/hdac_i915.c')
| -rw-r--r-- | sound/hda/hdac_i915.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index 161a9711cd63..b428537f284c 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -11,11 +11,6 @@ #include <sound/hda_i915.h> #include <sound/hda_register.h> -#define IS_HSW_CONTROLLER(pci) (((pci)->device == 0x0a0c) || \ - ((pci)->device == 0x0c0c) || \ - ((pci)->device == 0x0d0c) || \ - ((pci)->device == 0x160c)) - /** * snd_hdac_i915_set_bclk - Reprogram BCLK for HSW/BDW * @bus: HDA core bus @@ -39,7 +34,7 @@ void snd_hdac_i915_set_bclk(struct hdac_bus *bus) if (!acomp || !acomp->ops || !acomp->ops->get_cdclk_freq) return; /* only for i915 binding */ - if (!IS_HSW_CONTROLLER(pci)) + if (!HDA_CONTROLLER_IS_HSW(pci)) return; /* only HSW/BDW */ cdclk_freq = acomp->ops->get_cdclk_freq(acomp->dev); @@ -80,14 +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) |