mirror of
https://github.com/coolsnowwolf/lede.git
synced 2025-04-16 04:13:31 +00:00
94c4c1331a
Update default kernel version to 6.6 for the Raspberry Pi devices. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
41 lines
1.3 KiB
Diff
41 lines
1.3 KiB
Diff
From db41506f785ad84895a31b01e8bd7c07bceabb3d Mon Sep 17 00:00:00 2001
|
|
From: Dom Cobley <popcornmix@gmail.com>
|
|
Date: Tue, 5 Sep 2023 19:38:24 +0100
|
|
Subject: [PATCH 0597/1085] drm/vc4: hdmi: Avoid hang with debug registers when
|
|
suspended
|
|
|
|
Trying to read /sys/kernel/debug/dri/1/hdmi1_regs
|
|
when the hdmi is disconnected results in a fatal system hang.
|
|
|
|
This is due to the pm suspend code disabling the dvp clock.
|
|
That is just a gate of the 108MHz clock in DVP_HT_RPI_MISC_CONFIG,
|
|
which results in accesses hanging AXI bus.
|
|
|
|
Protect against this.
|
|
|
|
Signed-off-by: Dom Cobley <popcornmix@gmail.com>
|
|
---
|
|
drivers/gpu/drm/vc4/vc4_hdmi.c | 4 ++++
|
|
1 file changed, 4 insertions(+)
|
|
|
|
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
|
|
@@ -185,6 +185,8 @@ static int vc4_hdmi_debugfs_regs(struct
|
|
if (!drm_dev_enter(drm, &idx))
|
|
return -ENODEV;
|
|
|
|
+ WARN_ON(pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev));
|
|
+
|
|
drm_print_regset32(&p, &vc4_hdmi->hdmi_regset);
|
|
drm_print_regset32(&p, &vc4_hdmi->hd_regset);
|
|
drm_print_regset32(&p, &vc4_hdmi->cec_regset);
|
|
@@ -194,6 +196,8 @@ static int vc4_hdmi_debugfs_regs(struct
|
|
drm_print_regset32(&p, &vc4_hdmi->ram_regset);
|
|
drm_print_regset32(&p, &vc4_hdmi->rm_regset);
|
|
|
|
+ pm_runtime_put(&vc4_hdmi->pdev->dev);
|
|
+
|
|
drm_dev_exit(idx);
|
|
|
|
return 0;
|