attempt to lock bd during subsequent mount operations

KrahJohlito · Sep 21, 2024 · b703320 · b703320
1 parent ece2982
commit b703320
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/modules/iopcore/cdvdman/device-bdm.c b/modules/iopcore/cdvdman/device-bdm.c
@@ -26,13 +26,20 @@ 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;
         g_bd_sectors_per_sector = (2048 / bd->sectorSize);
         // 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)