From 8279038da2e7764beca4b798b68b8d99217d2d92 Mon Sep 17 00:00:00 2001
From: Sebastian Sumpf <sebastian.sumpf@genode-labs.com>
Date: Thu, 5 Jan 2023 11:18:06 +0100
Subject: [PATCH] lx_emul: provide _raw_read_lock/unlock functions

Required by i.MX8's gpu driver. '_raw_read_lock' was already present but
not implemented, add it's counter part as well.

issue #4713
---
 .../src/lib/lx_emul/shadow/kernel/locking/spinlock.c   | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/repos/dde_linux/src/lib/lx_emul/shadow/kernel/locking/spinlock.c b/repos/dde_linux/src/lib/lx_emul/shadow/kernel/locking/spinlock.c
index 4ea14fcc76..8425567b8b 100644
--- a/repos/dde_linux/src/lib/lx_emul/shadow/kernel/locking/spinlock.c
+++ b/repos/dde_linux/src/lib/lx_emul/shadow/kernel/locking/spinlock.c
@@ -105,7 +105,15 @@ void __lockfunc _raw_spin_unlock_irqrestore(raw_spinlock_t * lock,
 #ifndef CONFIG_INLINE_READ_LOCK
 void __lockfunc _raw_read_lock(rwlock_t * lock)
 {
-	lx_emul_trace_and_stop(__func__);
+	arch_read_lock(&(lock)->raw_lock);
+}
+#endif
+
+
+#ifndef CONFIG_INLINE_READ_UNLOCK
+void __lockfunc _raw_read_unlock(rwlock_t * lock)
+{
+	arch_read_unlock(&(lock)->raw_lock);
 }
 #endif