No need for this in 4.4, it's only needed in 4.5 for which it's already
merged. I added the stable tag thinking that the fix won't get merged
until 4.5 is released, since I sent the fix very late in the rc cycle.
In the future I will delay adding the stable tag in the same situation
making sure that it's really needed.
Sorry for the noise,
Imre
On la, 2016-03-05 at 11:18 -0800, gregkh@xxxxxxxxxxxxxxxxxxx wrote:
> The patch below does not apply to the 4.4-stable tree.
> If someone wants it applied there, or to any other stable or longterm
> tree, then please email the backport, including the original git
> commit
> id to <stable@xxxxxxxxxxxxxxx>.
>
> thanks,
>
> greg k-h
>
> ------------------ original commit in Linus's tree ------------------
>
> From bd90123c4973821775d7ffae9891ad36017702a9 Mon Sep 17 00:00:00
> 2001
> From: Imre Deak <imre.deak@xxxxxxxxx>
> Date: Mon, 29 Feb 2016 22:49:02 +0200
> Subject: [PATCH] drm/i915/skl: Fix power domain suspend sequence
>
> During system suspend we need to first disable power wells then
> unitialize the display core. In case power well support is disabled
> we
> did this in the wrong order, so fix this up.
>
> Fixes: d314cd43 ("drm/i915: fix handling of the disable_power_well
> module option")
> CC: stable@xxxxxxxxxxxxxxx
> CC: Patrik Jakobsson <patrik.jakobsson@xxxxxxxxxxxxxxx>
> Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
> Reviewed-by: Patrik Jakobsson <patrik.jakobsson@xxxxxxxxxxxxxxx>
> Link: http://patchwork.freedesktop.org/patch/msgid/1456778945-5411-1-
> git-send-email-imre.deak@xxxxxxxxx
> (cherry picked from commit 2622d79bd9d18fd04b650234e6a218c5f95cf308)
> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
>
> diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c
> b/drivers/gpu/drm/i915/intel_runtime_pm.c
> index 678ed3475d7e..ef8d24d9a50f 100644
> --- a/drivers/gpu/drm/i915/intel_runtime_pm.c
> +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
> @@ -2303,15 +2303,15 @@ void intel_power_domains_init_hw(struct
> drm_i915_private *dev_priv, bool resume)
> */
> void intel_power_domains_suspend(struct drm_i915_private *dev_priv)
> {
> - if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv))
> - skl_display_core_uninit(dev_priv);
> -
> /*
> * Even if power well support was disabled we still want to
> disable
> * power wells while we are system suspended.
> */
> if (!i915.disable_power_well)
> intel_display_power_put(dev_priv,
> POWER_DOMAIN_INIT);
> +
> + if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv))
> + skl_display_core_uninit(dev_priv);
> }
>
> /**
>
--
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