diff -Nru libdrm-2.4.112/debian/changelog libdrm-2.4.112/debian/changelog
--- libdrm-2.4.112/debian/changelog	2022-07-29 12:25:31.000000000 +0000
+++ libdrm-2.4.112/debian/changelog	2022-08-05 14:12:01.000000000 +0000
@@ -1,3 +1,10 @@
+libdrm (2.4.112-3+rpi1) bookworm-staging; urgency=medium
+
+  [changes brought forward from 2.4.74-1+rpi1 by Peter Michael Green <plugwash@raspbian.org> at Wed, 28 Jun 2017 21:14:42 +0000]
+  * Move valgrind to build-conflicts, the old version in raspbian breaks the build.
+
+ -- Raspbian forward porter <root@raspbian.org>  Fri, 05 Aug 2022 14:12:01 +0000
+
 libdrm (2.4.112-3) unstable; urgency=medium
 
   * libdrm-tegra0.symbols: Updated.
diff -Nru libdrm-2.4.112/debian/control libdrm-2.4.112/debian/control
--- libdrm-2.4.112/debian/control	2022-07-29 07:52:17.000000000 +0000
+++ libdrm-2.4.112/debian/control	2022-08-05 14:12:01.000000000 +0000
@@ -15,6 +15,8 @@
  libpciaccess-dev,
  python3-docutils,
 # valgrind [amd64 armhf i386 mips mipsel powerpc s390x],
+Build-conflicts:
+ Valgrind
 Standards-Version: 4.6.0
 Section: libs
 Vcs-Git: https://salsa.debian.org/xorg-team/lib/libdrm