From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Sat, 24 Mar 2018 17:40:21 +0000 (+0100)
Subject: efi_loader: RestoreTPL should execute queued events
X-Git-Tag: v2018.05-rc2~45^2~24
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0f7fcc72565ce411941a12de0fb0ea5538a17cd0;p=platform%2Fkernel%2Fu-boot.git

efi_loader: RestoreTPL should execute queued events

When the TPL is lowered queued events may become eligible for execution.

iPXE uses the following pattern to request event execution:

	bs->RestoreTPL ( TPL_APPLICATION );
	bs->RaiseTPL ( TPL_CALLBACK );

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
---

diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 1ff0568..fd35ffa 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -278,6 +278,11 @@ static void EFIAPI efi_restore_tpl(efi_uintn_t old_tpl)
 	if (efi_tpl > TPL_HIGH_LEVEL)
 		efi_tpl = TPL_HIGH_LEVEL;
 
+	/*
+	 * Lowering the TPL may have made queued events eligible for execution.
+	 */
+	efi_timer_check();
+
 	EFI_EXIT(EFI_SUCCESS);
 }