applications: nrf_desktop: Update button_event subscription priority

Change updates button_event subscription priority in the passkey buttons
and button simulator modules to let the modules process the event before
other application modules.

Jira: NCSDK-34374

Signed-off-by: Marek Pieta <[email protected]>

Author: MarekPieta

applications/nrf_desktop/src/hw_interface/buttons_sim.c

@@ -181,6 +181,6 @@ static bool app_event_handler(const struct app_event_header *aeh)
 
 APP_EVENT_LISTENER(MODULE, app_event_handler);
 APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
-APP_EVENT_SUBSCRIBE(MODULE, button_event);
+APP_EVENT_SUBSCRIBE_EARLY(MODULE, button_event);
 APP_EVENT_SUBSCRIBE(MODULE, power_down_event);
 APP_EVENT_SUBSCRIBE(MODULE, wake_up_event);

applications/nrf_desktop/src/hw_interface/passkey_buttons.c

@@ -227,5 +227,5 @@ static bool app_event_handler(const struct app_event_header *aeh)
 }
 APP_EVENT_LISTENER(MODULE, app_event_handler);
 APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
-APP_EVENT_SUBSCRIBE(MODULE, button_event);
+APP_EVENT_SUBSCRIBE_EARLY(MODULE, button_event);
 APP_EVENT_SUBSCRIBE(MODULE, passkey_req_event);

doc/nrf/releases_and_maturity/releases/release-notes-changelog.rst

@@ -314,6 +314,8 @@ nRF Desktop
     This change ensures that subscriptions to both HID boot and HID report protocol mode are not enabled at the same time.
   * The :ref:`nrf_desktop_fn_keys` to subscribe for :c:struct:`button_event` as the first subscriber (:c:macro:`APP_EVENT_SUBSCRIBE_FIRST`) by default.
     You can disable the :ref:`CONFIG_DESKTOP_FN_KEYS_BUTTON_EVENT_SUBSCRIBE_FIRST <config_desktop_app_options>` Kconfig option to use early subscription (:c:macro:`APP_EVENT_SUBSCRIBE_EARLY`).
+  * The :ref:`nrf_desktop_passkey` and :ref:`nrf_desktop_buttons_sim` to subscribe for :c:struct:`button_event` as an early subscriber (:c:macro:`APP_EVENT_SUBSCRIBE_EARLY`).
+    This allows the modules to process the event before other application modules.
 
 nRF Machine Learning (Edge Impulse)
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