openwrt/target/linux/bcm27xx/patches-6.1/950-0928-vc4_drv-Avoid-panic-when-booted-with-no-kms.patch
Marty Jones 2e715fb4fc bcm27xx: update 6.1 patches to latest version
Add support for BCM2712 (Raspberry Pi 5).
3bb5880ab3
Patches were generated from the diff between linux kernel branch linux-6.1.y
and rpi-6.1.y from raspberry pi kernel source:
- git format-patch linux-6.1.y...rpi-6.1.y

Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
[Remove applied and reverted patches, squash patches and config commits]
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-01-25 17:46:45 +01:00

30 lines
867 B
Diff

From 0f5fd4538774aa6c936bb8fc78611c3113bf19d7 Mon Sep 17 00:00:00 2001
From: Dom Cobley <popcornmix@gmail.com>
Date: Mon, 17 Apr 2023 15:21:41 +0100
Subject: [PATCH] vc4_drv: Avoid panic when booted with no kms
If kms/fkms overlay is not present we have no matching drivers
and so match is NULL.
It is not safe to call component_master_add_with_match with a null match argument.
So don't do that
Signed-off-by: Dom Cobley <popcornmix@gmail.com>
---
drivers/gpu/drm/vc4/vc4_drv.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -456,6 +456,9 @@ static int vc4_platform_drm_probe(struct
vc4_match_add_drivers(dev, &match,
component_drivers, ARRAY_SIZE(component_drivers));
+ if (!match)
+ return -ENODEV;
+
return component_master_add_with_match(dev, &vc4_drm_ops, match);
}