From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Wed, 5 Jun 2019 23:51:50 +0000 (+0200)
Subject: efi_loader: SignalEvent for event in signaled state
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=dfa306e44271aadc64cca4a070527ad7d64531fc;p=u-boot.git

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 c7e2ecbf00..74aa5f9b7c 100644
--- 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;