Intel HDMI probe regression on IVB (and older?)

[Takashi Iwai <tiwai@suse.de>]

Hi,

we've got a regression report about Intel HDMI.  It seems that the
recent change to skip the component binding (commit c9db8a30d9f0)
throws away the devices incorrectly on IvyBridge.  I guess the similar
issue could happen on older chips.  The bug report is found at
  https://bugzilla.opensuse.org/show_bug.cgi?id=1200611

Judging from the logs there, on IvyBridge, the GPU is

00:02.0 0380: 8086:0162 (rev 09)
	DeviceName:  Onboard IGD
	Subsystem: 1043:84ca
	Flags: bus master, fast devsel, latency 0, IRQ 27
	Memory at f7800000 (64-bit, non-prefetchable) [size=4M]
	Memory at d0000000 (64-bit, prefetchable) [size=256M]
	I/O ports at f000 [size=64]
	Capabilities: <access denied>
	Kernel driver in use: i915
	Kernel modules: i915

while HD-audio is

00:1b.0 0403: 8086:1e20 (rev 04)
	Subsystem: 1043:84a8
	Flags: bus master, fast devsel, latency 0, IRQ 31
	Memory at f7d10000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel

Unlike Haswell, IVB has no dedicated HDMI audio controller, and it's
connected on HD-audio bus of 00:1b.0.

Kai, could you check this issue?


thanks,

Takashi