efi_loader: SignalEvent for event in signaled state

If an event is already in the signaled state, SignalEvent should not queue
the notification function but simply return EFI_SUCCESS.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index c7e2ecbf00f60722c9ead08c3a4aacefb3fccce7..74aa5f9b7ca24b334a86bfc0892adb4df533675b 100644 (file)
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -221,6 +221,8 @@ efi_status_t is_valid_tpl(efi_uintn_t tpl)
  */
 void efi_signal_event(struct efi_event *event, bool check_tpl)
 {
+       if (event->is_signaled)
+               return;
        if (event->group) {
                struct efi_event *evt;