HYL_OK3568_LINUX/buildroot/package/libdrm/0005-HACK-Bypass-drm-GetBusid-drmAuthMagic-SetInterfaceVe.patch
2025-05-10 21:49:39 +08:00

54 lines
1.4 KiB
Diff

From 75ac1c5aad1ceec6d373390cfcfd473da6656786 Mon Sep 17 00:00:00 2001
From: Jeffy Chen <jeffy.chen@rock-chips.com>
Date: Wed, 12 Jan 2022 11:42:19 +0800
Subject: [PATCH 5/5] HACK: Bypass
drm{GetBusid,drmAuthMagic,SetInterfaceVersion} by default
A few versions of Mali GBM winsys would try to call those APIs.
Set env "DRM_ALLOW_GET_BUSID" "DRM_ALLOW_AUTH_MAGIC" and
"DRM_ALLOW_SET_VERSION" to enable them.
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---
xf86drm.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/xf86drm.c b/xf86drm.c
index e44b926..ac9fd85 100644
--- a/xf86drm.c
+++ b/xf86drm.c
@@ -1439,6 +1439,9 @@ drm_public char *drmGetBusid(int fd)
{
drm_unique_t u;
+ if (!getenv("DRM_ALLOW_GET_BUSID"))
+ return strdup("");
+
memclear(u);
if (drmIoctl(fd, DRM_IOCTL_GET_UNIQUE, &u))
@@ -1497,6 +1500,9 @@ drm_public int drmAuthMagic(int fd, drm_magic_t magic)
{
drm_auth_t auth;
+ if (!getenv("DRM_ALLOW_AUTH_MAGIC"))
+ return 0;
+
memclear(auth);
auth.magic = magic;
if (drmIoctl(fd, DRM_IOCTL_AUTH_MAGIC, &auth))
@@ -2995,6 +3001,9 @@ drm_public int drmSetInterfaceVersion(int fd, drmSetVersion *version)
int retcode = 0;
drm_set_version_t sv;
+ if (!getenv("DRM_ALLOW_SET_VERSION"))
+ return 0;
+
memclear(sv);
sv.drm_di_major = version->drm_di_major;
sv.drm_di_minor = version->drm_di_minor;
--
2.20.1