Re: FAILED: patch "[PATCH] drm/i915/icl+: Don't enable DDI IO power on a TypeC port in" failed to apply to 5.5-stable tree

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On Wed, Apr 15, 2020 at 01:35:21PM +0200, gregkh@xxxxxxxxxxxxxxxxxxx wrote:

The patch below does not apply to the 5.5-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 6e8a36c13382b7165d23928caee8d91c1b301142 Mon Sep 17 00:00:00 2001
From: Imre Deak <imre.deak@xxxxxxxxx>
Date: Mon, 30 Mar 2020 18:22:44 +0300
Subject: [PATCH] drm/i915/icl+: Don't enable DDI IO power on a TypeC port in
TBT mode
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The DDI IO power well must not be enabled for a TypeC port in TBT mode,
ensure this during driver loading/system resume.

This gets rid of error messages like
[drm] *ERROR* power well DDI E TC2 IO state mismatch (refcount 1/enabled 0)

and avoids leaking the power ref when disabling the output.

Cc: <stable@xxxxxxxxxxxxxxx> # v5.4+
Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
Reviewed-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20200330152244.11316-1-imre.deak@xxxxxxxxx
(cherry picked from commit f77a2db27f26c3ccba0681f7e89fef083718f07f)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>

Conflict because we didn't have b7d02c3a124d ("drm/i915: Pass
intel_encoder to enc_to_*()"). Fixed and queued up.

--
Thanks,
Sasha



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