The code to check if a registration key is a valid key returned by RegisterProtocolNotify() can be reused. So let us factor it out into a new function efi_check_register_notify_event().
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- lib/efi_loader/efi_boottime.c | 31 +++++++++++++++++++++++-------- 1 file changed, 23 insertions(+), 8 deletions(-)
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index 1ccf54c386..dd5f706af7 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -1388,6 +1388,27 @@ static int efi_search(enum efi_locate_search_type search_type, } }
+/** + * efi_check_register_notify_event() - check if registration key is valid + * + * Check that a pointer is a valid registration key as returned by + * RegisterProtocolNotify(). + * + * @key: registration key + * Return: valid registration key or NULL + */ +static struct efi_register_notify_event *efi_check_register_notify_event + (void *key) +{ + struct efi_register_notify_event *event; + + list_for_each_entry(event, &efi_register_notify_events, link) { + if (event == (struct efi_register_notify_event *)key) + return event; + } + return NULL; +} + /** * efi_locate_handle() - locate handles implementing a protocol * @@ -1409,7 +1430,7 @@ static efi_status_t efi_locate_handle( { struct efi_object *efiobj; efi_uintn_t size = 0; - struct efi_register_notify_event *item, *event = NULL; + struct efi_register_notify_event *event; struct efi_protocol_notification *handle = NULL;
/* Check parameters */ @@ -1420,13 +1441,7 @@ static efi_status_t efi_locate_handle( if (!search_key) return EFI_INVALID_PARAMETER; /* Check that the registration key is valid */ - list_for_each_entry(item, &efi_register_notify_events, link) { - if (item == - (struct efi_register_notify_event *)search_key) { - event = item; - break; - } - } + event = efi_check_register_notify_event(search_key); if (!event) return EFI_INVALID_PARAMETER; break; -- 2.20.1