From 97bf616b5b9c0700a3bed8fd54b0ca03f7a7b09d Mon Sep 17 00:00:00 2001
From: Stefan Kalkowski <stefan.kalkowski@genode-labs.com>
Date: Wed, 31 May 2023 11:46:13 +0200
Subject: [PATCH] lx_emul: fix rcu_needs_cpu() for older kernels

Resolves observed regression for the older usb host drivers (< linux
version 5.18).

Ref genodelabs/genode#4798
---
 repos/dde_linux/src/lib/lx_emul/shadow/kernel/rcu/tree.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/repos/dde_linux/src/lib/lx_emul/shadow/kernel/rcu/tree.c b/repos/dde_linux/src/lib/lx_emul/shadow/kernel/rcu/tree.c
index 9e2fd1dcef..481bc149ac 100644
--- a/repos/dde_linux/src/lib/lx_emul/shadow/kernel/rcu/tree.c
+++ b/repos/dde_linux/src/lib/lx_emul/shadow/kernel/rcu/tree.c
@@ -32,10 +32,13 @@ void rcu_read_unlock_strict(void) { }
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,18,0)
 int rcu_needs_cpu(u64 basemono, u64 *nextevt)
+{
+	if (nextevt)
+		*nextevt = KTIME_MAX;
 #else
 int rcu_needs_cpu(void)
-#endif
 {
+#endif
 	return 0;
 }