This is a note to let you know that I've just added the patch titled
Revert "drm/amdgpu/display: set vblank_disable_immediate for DC"
to the 5.18-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:
revert-drm-amdgpu-display-set-vblank_disable_immediate-for-dc.patch
and it can be found in the queue-5.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a775e4e4941bf2f326aa36c58f67bd6c96cac717 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Mon, 20 Jun 2022 18:29:39 -0400
Subject: Revert "drm/amdgpu/display: set vblank_disable_immediate for DC"
From: Alex Deucher <alexander.deucher@xxxxxxx>
commit a775e4e4941bf2f326aa36c58f67bd6c96cac717 upstream.
This reverts commit 92020e81ddbeac351ea4a19bcf01743f32b9c800.
This causes stuttering and timeouts with DMCUB for some users
so revert it until we understand why and safely enable it
to save power.
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1887
Acked-by: Harry Wentland <harry.wentland@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 1 +
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ---
2 files changed, 1 insertion(+), 3 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
@@ -333,6 +333,7 @@ int amdgpu_irq_init(struct amdgpu_device
if (!amdgpu_device_has_dc_support(adev)) {
if (!adev->enable_virtual_display)
/* Disable vblank IRQs aggressively for power-saving */
+ /* XXX: can this be enabled for DC? */
adev_to_drm(adev)->vblank_disable_immediate = true;
r = drm_vblank_init(adev_to_drm(adev), adev->mode_info.num_crtc);
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -4286,9 +4286,6 @@ static int amdgpu_dm_initialize_drm_devi
}
#endif
- /* Disable vblank IRQs aggressively for power-saving. */
- adev_to_drm(adev)->vblank_disable_immediate = true;
-
/* loops over all connectors on the board */
for (i = 0; i < link_cnt; i++) {
struct dc_link *link = NULL;
Patches currently in stable-queue which might be from alexander.deucher@xxxxxxx are
queue-5.18/revert-drm-amdgpu-display-set-vblank_disable_immediate-for-dc.patch
queue-5.18/drm-amdgpu-to-flush-tlb-for-mmhub-of-raven-series.patch
queue-5.18/drm-amdgpu-fix-adev-variable-used-in-amdgpu_device_gpu_recover.patch
