Re: [PATCH stable-5.1 v2 0/4] drm/i915: Prevent screen from flickering when the CDCLK changes

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On Fri, Jun 21, 2019 at 06:07:12PM +0800, Jian-Hong Pan wrote:
> Hi,
> 
> To make it more clearly, I re-send this patch series again.
> 
> To fix "the audio playback does not work anymore after suspend & resume"
> on ASUS E406MA, we need rediffed commit "drm/i915: Force 2*96 MHz cdclk
> on glk/cnl when audio power is enabled".  However, after apply the
> commit "drm/i915: Force 2*96 MHz cdclk on glk/cnl when audio power is
> enabled", it induces the screen to flicker when the CDCLK changes on the
> laptop. [1]
> 
> So, we need these commits to prevent that:
> 
> commit 48d9f87ddd21 drm/i915: Save the old CDCLK atomic state
> commit 2b21dfbeee72 drm/i915: Remove redundant store of logical CDCLK state
> commit 59f9e9cab3a1 drm/i915: Skip modeset for cdclk changes if possible
> 
> This issue is also reconfirmed on the list. [2][3]
> 
> [1] https://bugzilla.kernel.org/show_bug.cgi?id=203623
> [2] https://bugs.freedesktop.org/show_bug.cgi?id=110916
> [3] https://www.spinics.net/lists/stable/msg310910.html

Now queued up, thanks.

greg k-h



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