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authorHeinrich Schuchardt2019-05-29 07:46:33 +0200
committerHeinrich Schuchardt2019-05-31 23:27:11 +0200
commitb8abd743ff1669e07e4e022e5793720d875d8e13 (patch)
tree41e4dde519d29ec4358386ba57b29ecef3def758 /lib
parent8eee1d3ec6776d84e8b45d346e73734456518017 (diff)
efi_loader: factor out efi_check_register_notify_event()
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>
Diffstat (limited to 'lib')
-rw-r--r--lib/efi_loader/efi_boottime.c31
1 files changed, 23 insertions, 8 deletions
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 1ccf54c3860..dd5f706af76 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -1389,6 +1389,27 @@ 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
*
* @search_type: selection criterion
@@ -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;