From 4d83098c9f6b27484b99b961cc7abe2df9a6785d Mon Sep 17 00:00:00 2001
From: jsg <jsg@openbsd.org>
Date: Tue, 7 Apr 2026 09:04:16 +0000
Subject: [PATCH] add DEFINE_IDR() for 6.18.21 drm

---
 sys/dev/pci/drm/include/linux/idr.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/sys/dev/pci/drm/include/linux/idr.h b/sys/dev/pci/drm/include/linux/idr.h
index 22a5947f9d8..169f326dc25 100644
--- a/sys/dev/pci/drm/include/linux/idr.h
+++ b/sys/dev/pci/drm/include/linux/idr.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: idr.h,v 1.8 2026/03/08 23:31:50 jsg Exp $	*/
+/*	$OpenBSD: idr.h,v 1.9 2026/04/07 09:04:16 jsg Exp $	*/
 /*
  * Copyright (c) 2016 Mark Kettenis
  *
@@ -33,6 +33,11 @@ struct idr {
 	SPLAY_HEAD(idr_tree, idr_entry) tree;
 };
 
+#define DEFINE_IDR(name)					\
+	struct idr name = {					\
+		.tree = SPLAY_INITIALIZER(&name.idr.tree),	\
+	}
+
 void idr_init(struct idr *);
 void idr_preload(unsigned int);
 int idr_alloc(struct idr *, void *, int, int, gfp_t);