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efi_loader: RestoreTPL should execute queued events

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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>
This commit is contained in:
Heinrich Schuchardt 2018-03-24 18:40:21 +01:00 committed by Alexander Graf
parent ee3db4fc04
commit 0f7fcc7256
1 changed files with 5 additions and 0 deletions
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5
lib/efi_loader/efi_boottime.c
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@ -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);
}