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-rw-r--r--render/allocator/allocator.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/render/allocator/allocator.c b/render/allocator/allocator.c
index b380584c..10284cdd 100644
--- a/render/allocator/allocator.c
+++ b/render/allocator/allocator.c
@@ -69,11 +69,11 @@ static int reopen_drm_node(int drm_fd, bool allow_render_node) {
free(name);
- // If we're using a DRM primary node (e.g. because we're running under the
- // DRM backend, or because we're on split render/display machine), we need
- // to use the legacy DRM authentication mechanism to have the permission to
- // manipulate buffers.
- if (drmGetNodeTypeFromFd(new_fd) == DRM_NODE_PRIMARY) {
+ // If we're using a DRM primary node and we are DRM master (e.g. because
+ // we're running under the DRM backend), we need to use the legacy DRM
+ // authentication mechanism to have the permission to manipulate DRM dumb
+ // buffers.
+ if (drmIsMaster(drm_fd) && drmGetNodeTypeFromFd(new_fd) == DRM_NODE_PRIMARY) {
drm_magic_t magic;
if (drmGetMagic(new_fd, &magic) < 0) {
wlr_log_errno(WLR_ERROR, "drmGetMagic failed");