From b703320748068bd8613f944d8b8c35beae496cba Mon Sep 17 00:00:00 2001
From: KrahJohlito <krahjohlito@outlook.com>
Date: Sat, 21 Sep 2024 11:02:19 +0930
Subject: [PATCH] attempt to lock bd during subsequent mount operations

---
 modules/iopcore/cdvdman/device-bdm.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/modules/iopcore/cdvdman/device-bdm.c b/modules/iopcore/cdvdman/device-bdm.c
index f3754e3b5..c0210da9a 100644
--- a/modules/iopcore/cdvdman/device-bdm.c
+++ b/modules/iopcore/cdvdman/device-bdm.c
@@ -26,6 +26,10 @@ void bdm_connect_bd(struct block_device *bd)
 {
     DPRINTF("connecting device %s%dp%d\n", bd->name, bd->devNr, bd->parNr);
 
+    // lock when performing additional device mount operations
+    if (g_bd != NULL)
+        WaitSema(bdm_io_sema);
+
     if (g_bd == NULL && bd->devNr == cdvdman_settings.bdDeviceId) {
         DPRINTF("attaching to %s%dp%d\n", bd->name, bd->devNr, bd->parNr);
         g_bd = bd;
@@ -33,6 +37,9 @@ void bdm_connect_bd(struct block_device *bd)
         // Free usage of block device
         SignalSema(bdm_io_sema);
     }
+
+    if (g_bd != NULL && g_bd != bd)
+        SignalSema(bdm_io_sema);
 }
 
 void bdm_disconnect_bd(struct block_device *bd)