[Bug 86221] HDMI no sound output while intel IOMMU is enabled on Haswell-based board

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=86221

henrywu at qnap.com changed:

           What    |Removed                     |Added
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                 CC|                            |henrywu at qnap.com

--- Comment #6 from henrywu at qnap.com ---
(In reply to Takashi Iwai from comment #5)
> The problem is rather in iommu or graphics, not in the sound driver...
> Let's reassign to the component.  Feel free to reassign to else if not
> appropriate.

Thanks.

I am wondering if the IGD and HDA controller share a p2p bridge? that intel
iommu is not aware of?

Just a wild guess, correct me if I am wrong.

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