[update] platform: zephyr: add MSC application lifecycle hooks

- Add weak usbh_msc_app_run() and usbh_msc_app_stop() callbacks to the
Zephyr MSC disk adapter.

- Invoke the application start callback after registering the disk and
the stop callback before unregistering it, allowing samples to mount
and unmount filesystems without modifying the CherryUSB class driver.

Signed-off-by: Zhihong Chen <[email protected]>

1 files changed, 16 insertions, 2 deletions

diff --git a/platform/zephyr/usbh_msc_disk.c b/platform/zephyr/usbh_msc_disk.c
index 6890f985..0223a9ee 100644
--- a/platform/zephyr/usbh_msc_disk.c
+++ b/platform/zephyr/usbh_msc_disk.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2025, sakumisu
+ * Copyright (c) 2025-2026 sakumisu
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -131,12 +131,26 @@ static struct disk_info usbh_msc_disk = {
     .ops = &msc_disk_ops,
 };
 
+__WEAK void usbh_msc_app_run(struct usbh_msc *msc_class)
+{
+    (void)msc_class;
+}
+
+__WEAK void usbh_msc_app_stop(struct usbh_msc *msc_class)
+{
+    (void)msc_class;
+}
+
 void usbh_msc_run(struct usbh_msc *msc_class)
 {
     disk_access_register(&usbh_msc_disk);
+
+    usbh_msc_app_run(msc_class);
 }
 
 void usbh_msc_stop(struct usbh_msc *msc_class)
 {
+    usbh_msc_app_stop(msc_class);
+
     disk_access_unregister(&usbh_msc_disk);
-}
\ No newline at end of file
+}