From ebf67ee4b1c4973f73eca9d97deacd0050b9ba96 Mon Sep 17 00:00:00 2001
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From: Jeffy Chen <jeffy.chen@rock-chips.com>
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Date: Wed, 12 Jan 2022 11:42:19 +0800
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Subject: [PATCH 4/4] HACK: Bypass drmSetInterfaceVersion and drmGetBusid by
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default
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A few versions of Mali GBM winsys would try to call those APIs.
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Set env "DRM_ALLOW_SET_VERSION" and "DRM_ALLOW_GET_BUSID" to enable it.
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Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
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---
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xf86drm.c | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/xf86drm.c b/xf86drm.c
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index d6afb70..0476cc5 100644
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--- a/xf86drm.c
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+++ b/xf86drm.c
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@@ -1432,6 +1432,9 @@ drm_public char *drmGetBusid(int fd)
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{
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drm_unique_t u;
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+ if (!getenv("DRM_ALLOW_GET_BUSID"))
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+ return strdup("libdrm-fake-busid");
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+
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memclear(u);
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if (drmIoctl(fd, DRM_IOCTL_GET_UNIQUE, &u))
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@@ -2988,6 +2991,9 @@ drm_public int drmSetInterfaceVersion(int fd, drmSetVersion *version)
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int retcode = 0;
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drm_set_version_t sv;
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+ if (!getenv("DRM_ALLOW_SET_VERSION"))
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+ return 0;
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+
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memclear(sv);
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sv.drm_di_major = version->drm_di_major;
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sv.drm_di_minor = version->drm_di_minor;
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--
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2.20.1
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