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openmptcprouter/root/target/linux/brcm2708/patches-4.19/0585-drm-vc4-Fix-oops-at-boot-with-firmwarekms-on-4.19.patch
Ycarus (Yannick Chabanois) 5f08b288eb Add RPI4 beta support
2019-06-24 19:52:48 +02:00

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From 00503d7ce8fe07e4971185b4f93a628028eaece3 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Mon, 4 Mar 2019 11:59:34 -0800
Subject: [PATCH 585/678] drm/vc4: Fix oops at boot with firmwarekms on 4.19.
Signed-off-by: Eric Anholt <eric@anholt.net>
---
drivers/gpu/drm/vc4/vc4_kms.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
index f8c6cafff14a..14ccd676b2e9 100644
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -107,6 +107,9 @@ vc4_ctm_commit(struct vc4_dev *vc4, struct drm_atomic_state *state)
struct vc4_ctm_state *ctm_state = to_vc4_ctm_state(vc4->ctm_manager.state);
struct drm_color_ctm *ctm = ctm_state->ctm;
+ if (vc4->firmware_kms)
+ return;
+
if (ctm_state->fifo) {
HVS_WRITE(SCALER_OLEDCOEF2,
VC4_SET_FIELD(vc4_ctm_s31_32_to_s0_9(ctm->matrix[0]),
--
2.19.1