This is a note to let you know that I've just added the patch titled
drm/i915: Reject async flips with bigjoiner
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-reject-async-flips-with-bigjoiner.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 88a173e5dd05e788068e8fa20a8c37c44bd8f416 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@xxxxxxxxxxxxxxx>
Date: Mon, 11 Dec 2023 10:11:34 +0200
Subject: drm/i915: Reject async flips with bigjoiner
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From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
commit 88a173e5dd05e788068e8fa20a8c37c44bd8f416 upstream.
Currently async flips are busted when bigjoiner is in use.
As a short term fix simply reject async flips in that case.
Cc: stable@xxxxxxxxxxxxxxx
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/9769
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20231211081134.2698-1-ville.syrjala@xxxxxxxxxxxxxxx
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@xxxxxxxxx>
(cherry picked from commit e93bffc2ac0a833b42841f31fff955549d38ce98)
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_display.c | 11 +++++++++++
1 file changed, 11 insertions(+)
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -14142,6 +14142,17 @@ static void intel_atomic_track_fbs(struc
struct intel_plane *plane;
int i;
+ /*
+ * FIXME: Bigjoiner+async flip is busted currently.
+ * Remove this check once the issues are fixed.
+ */
+ if (new_crtc_state->bigjoiner_pipes) {
+ drm_dbg_kms(&i915->drm,
+ "[CRTC:%d:%s] async flip disallowed with bigjoiner\n",
+ crtc->base.base.id, crtc->base.name);
+ return -EINVAL;
+ }
+
for_each_oldnew_intel_plane_in_state(state, plane, old_plane_state,
new_plane_state, i)
intel_frontbuffer_track(to_intel_frontbuffer(old_plane_state->base.fb),
Patches currently in stable-queue which might be from ville.syrjala@xxxxxxxxxxxxxxx are
queue-5.4/alsa-hda-hdmi-add-force-connect-quirk-for-nuc5cpyb.patch
queue-5.4/drm-i915-reject-async-flips-with-bigjoiner.patch
