efi_loader: run CreateEvent() notify function based on flags
The UEFI specification states that the tpl, function and context
arguments are to be ignored if neither EVT_NOTIFY_WAIT or
EVT_NOTIFY_SIGNAL are specified. This matches observed behaviour with
an AMI EDK2 based UEFI implementation.
Skip calling the notify function if neither flag is present.
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Acked-By: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/include/efi_api.h b/include/efi_api.h
index 5c3836a..f071b36 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -28,6 +28,9 @@
EFI_TIMER_RELATIVE = 2
};
+#define EVT_NOTIFY_WAIT 0x00000100
+#define EVT_NOTIFY_SIGNAL 0x00000200
+
/* EFI Boot Services table */
struct efi_boot_services {
struct efi_table_hdr hdr;
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 51080cb..eb5946a 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -210,7 +210,9 @@
/* Triggering! */
if (efi_event.trigger_type == EFI_TIMER_PERIODIC)
efi_event.trigger_next += efi_event.trigger_time / 10;
- efi_event.notify_function(&efi_event, efi_event.notify_context);
+ if (efi_event.type & (EVT_NOTIFY_WAIT | EVT_NOTIFY_SIGNAL))
+ efi_event.notify_function(&efi_event,
+ efi_event.notify_context);
}
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