Re: Backport of CDCLK/Haswell patches

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On Wed, Oct 08, 2014 at 10:09:11AM +0200, David Henningsson wrote:
> Hi stable maintainers,
> 
> These two patches: c149dcb5c60bfea8871f16dfcc0690255eeb825f
> drm/i915: provide interface for audio driver to query cdclk
> and
> e4d9e513dedb5ac4e166c1053314fa935ddecc8c
> ALSA: hda - restore BCLK M/N value as per CDCLK for HSW/BDW display HDA
> controller
> 
> ...never seem to have made it into 3.12+ stable kernels. They fix an issue
> where playback rate over Haswell HDMI audio can be faster than normal.
> 
> Now, the latter of these two patches requires a restructure of moving things
> from hda_intel.c to hda_priv.h, which looked tedious and potentially
> error-prone to backport in itself, so instead I rewrote the function
> slightly, see attachment.
> 
> Do you think this is a reasonable approach?
> 
> Note: It is possible that the patches in its current form do not apply
> cleanly if the stable kernel is missing another stable patch
> (a07187c992be945ab561b370cbb49cfd72064c3c
> ALSA: hda - restore BCLK M/N values when resuming HSW/BDW display
> controller), which is now superseded with this patch.

These don't seem to work for the 3.14-stable tree, so I'm not going to
worry about them at this point in time.

thanks,

greg k-h
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