[Intel-gfx] kernel 5.6: baytrail hdmi audio not working

[Giacomo Comes]

On Thu, Apr 02, 2020 at 04:52:03PM +0300, Ville Syrjälä wrote:
> On Wed, Apr 01, 2020 at 06:53:17PM -0400, Giacomo Comes wrote:
> > Hi,
> > on my Intel Compute Stick STCK1 (baytrail hdmi audio) 
> > sound is not working with the kernel 5.6
> > 
> > I have bisected the kernel and I found the commit that introduced the issue:
> > 
> > commit 58d124ea2739e1440ddd743d46c470fe724aca9a
> > Author: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> > Date:   Thu Oct 31 12:26:04 2019 +0100
> > 
> >     drm/i915: Complete crtc hw/uapi split, v6.
> >     
> >     Now that we separated everything into uapi and hw, it's
> >     time to make the split definitive. Remove the union and
> >     make a copy of the hw state on modeset and fastset.
> >     
> >     Color blobs are copied in crtc atomic_check(), right
> >     before color management is checked.
> > 
> > If more information is required please let me know.
> 
> Should hopefully be fixed with
> commit 2bdd4c28baff ("drm/i915/display: Fix mode private_flags
> comparison at atomic_check")
> 
> Stable folks, please pick that up for 5.6.x stable releases.

I can confirm that the commit indeed solves the problem I have.
It should go in the stable 5.6.x release ASAP.

Thanks.
Giacomo