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-rw-r--r--meta-agl-drm-lease/dynamic-layers/meta-raspberrypi/recipes-graphics/mesa/mesa/0001-Workaround-Disable-DRM_AUTH-checks-on-wayland-protocols.patch42
-rw-r--r--meta-agl-drm-lease/dynamic-layers/meta-raspberrypi/recipes-graphics/mesa/mesa_20.0.2.bbappend4
2 files changed, 46 insertions, 0 deletions
diff --git a/meta-agl-drm-lease/dynamic-layers/meta-raspberrypi/recipes-graphics/mesa/mesa/0001-Workaround-Disable-DRM_AUTH-checks-on-wayland-protocols.patch b/meta-agl-drm-lease/dynamic-layers/meta-raspberrypi/recipes-graphics/mesa/mesa/0001-Workaround-Disable-DRM_AUTH-checks-on-wayland-protocols.patch
new file mode 100644
index 00000000..f6be51e0
--- /dev/null
+++ b/meta-agl-drm-lease/dynamic-layers/meta-raspberrypi/recipes-graphics/mesa/mesa/0001-Workaround-Disable-DRM_AUTH-checks-on-wayland-protocols.patch
@@ -0,0 +1,42 @@
+From f583672221b8451d03f739bc96428e97809d021a Mon Sep 17 00:00:00 2001
+From: Damian Hobson-Garcia <dhobsong@igel.co.jp>
+Date: Tue, 5 Apr 2022 18:09:02 +0900
+Subject: [PATCH] Workaround: Disable DRM_AUTH check on wayland protocols
+
+DRM authentication does not work via a DRM Leases because the client
+can only authenticate against a lease owner (primary node), since
+the lease does not have a corresponding device file in the filesystem
+for clients to open.
+
+The wl_drm protocol needs authentication to import/export prime fds
+on kernel versions < 5.6. For newer kernel versions, prime
+import/export no longer requires DRM_AUTH, so processing can proceed
+even if DRM authentication fails.
+
+A proper implementation would check if the device is actually a
+DRM lease and/or whether the import/export can succeed without
+authentication. For now, just try to authenticate and ignore
+any failures.
+---
+ src/egl/drivers/dri2/platform_drm.c | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/src/egl/drivers/dri2/platform_drm.c b/src/egl/drivers/dri2/platform_drm.c
+index d0ab172..260a2c6 100644
+--- a/src/egl/drivers/dri2/platform_drm.c
++++ b/src/egl/drivers/dri2/platform_drm.c
+@@ -508,7 +508,10 @@ dri2_drm_authenticate(_EGLDisplay *disp, uint32_t id)
+ {
+ struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
+
+- return drmAuthMagic(dri2_dpy->fd, id);
++ /* WORKAROUND: Ignore DRM_AUTH failures. Ideally should only be done for
++ clienits coming through a DRM lease, but just make it global for now */
++ drmAuthMagic(dri2_dpy->fd, id);
++ return 0;
+ }
+
+ static void
+--
+2.17.1
+
diff --git a/meta-agl-drm-lease/dynamic-layers/meta-raspberrypi/recipes-graphics/mesa/mesa_20.0.2.bbappend b/meta-agl-drm-lease/dynamic-layers/meta-raspberrypi/recipes-graphics/mesa/mesa_20.0.2.bbappend
new file mode 100644
index 00000000..15e3aeba
--- /dev/null
+++ b/meta-agl-drm-lease/dynamic-layers/meta-raspberrypi/recipes-graphics/mesa/mesa_20.0.2.bbappend
@@ -0,0 +1,4 @@
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
+
+SRC_URI += "file://0001-Workaround-Disable-DRM_AUTH-checks-on-wayland-protocols.patch"
+