openwrt/target/linux/bcm27xx/patches-6.1/950-0048-drm-vc4-hvs-Ignore-atomic_flush-if-we-re-disabled.patch
Álvaro Fernández Rojas 793f8ab62c bcm27xx: 6.1: add kernel patches
Add kernel patches for version 6.1.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2023-06-09 19:12:30 +02:00

28 lines
891 B
Diff

From 2f38c1f89175b33aaa091d055a804f4f31c47ec2 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Mon, 6 Dec 2021 16:32:10 +0100
Subject: [PATCH] drm/vc4: hvs: Ignore atomic_flush if we're disabled
atomic_flush will be called for each CRTC even if they aren't enabled.
The whole code we have there will thus run without a properly affected
channel, which can then result in all sorts of weird behaviour.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
drivers/gpu/drm/vc4/vc4_hvs.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/vc4/vc4_hvs.c
+++ b/drivers/gpu/drm/vc4/vc4_hvs.c
@@ -778,6 +778,9 @@ void vc4_hvs_atomic_flush(struct drm_crt
return;
}
+ if (vc4_state->assigned_channel == VC4_HVS_CHANNEL_DISABLED)
+ return;
+
if (debug_dump_regs) {
DRM_INFO("CRTC %d HVS before:\n", drm_crtc_index(crtc));
vc4_hvs_dump_state(hvs);