mirror of
https://github.com/Ysurac/openmptcprouter.git
synced 2025-02-15 04:42:02 +00:00
47 lines
1.7 KiB
Diff
47 lines
1.7 KiB
Diff
From 8dec337920a708a94bd0e00badacfe1f27a6a12e Mon Sep 17 00:00:00 2001
|
|
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
Date: Wed, 24 Jan 2024 16:35:11 +0000
|
|
Subject: [PATCH 0886/1002] drm/vc4: Disable overrun interrupts
|
|
|
|
We have a read-modify-write race when updating SCALER_DISPCTRL for
|
|
underrun and end-of-frame interrupts.
|
|
Ideally it would be fixed via a spinlock or similar, but that will
|
|
require a reasonable amount of study to ensure we don't get deadlocks.
|
|
|
|
The underrun reporting is only for debug, so disable it for now.
|
|
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
---
|
|
drivers/gpu/drm/vc4/vc4_crtc.c | 2 +-
|
|
drivers/gpu/drm/vc4/vc4_kms.c | 2 +-
|
|
2 files changed, 2 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
|
|
index 10039764fe78..b86b5dc00c15 100644
|
|
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
|
|
@@ -868,7 +868,7 @@ static void vc4_crtc_handle_page_flip(struct vc4_crtc *vc4_crtc)
|
|
* the CRTC and encoder already reconfigured, leading to
|
|
* underruns. This can be seen when reconfiguring the CRTC.
|
|
*/
|
|
- if (vc4->gen < VC4_GEN_6)
|
|
+ if (0 && vc4->gen < VC4_GEN_6)
|
|
vc4_hvs_unmask_underrun(hvs, chan);
|
|
}
|
|
spin_unlock(&vc4_crtc->irq_lock);
|
|
diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
|
|
index 964ecf551a09..ea66914ed5ea 100644
|
|
--- a/drivers/gpu/drm/vc4/vc4_kms.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
|
|
@@ -391,7 +391,7 @@ static void vc4_atomic_commit_tail(struct drm_atomic_state *state)
|
|
if (WARN_ON(IS_ERR(new_hvs_state)))
|
|
return;
|
|
|
|
- if (vc4->gen < VC4_GEN_6) {
|
|
+ if (0 && vc4->gen < VC4_GEN_6) {
|
|
struct drm_crtc_state *new_crtc_state;
|
|
struct drm_crtc *crtc;
|
|
int i;
|
|
--
|
|
2.44.0
|
|
|