Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
common/efi-devicepath.c | 15 +++++++++++++++
include/efi.h | 1 +
2 files changed, 16 insertions(+)
diff --git a/common/efi-devicepath.c b/common/efi-devicepath.c
index 3a3a8b9ebd..11d865af41 100644
--- a/common/efi-devicepath.c
+++ b/common/efi-devicepath.c
@@ -782,6 +782,21 @@ u8 device_path_to_type(struct efi_device_path *dev_path)
return device_path_type(dev_path);
}
+u8 device_path_to_subtype(struct efi_device_path *dev_path)
+{
+ struct efi_device_path *dev_path_next;
+
+ dev_path = unpack_device_path(dev_path);
+ dev_path_next = next_device_path_node(dev_path);
+
+ while (!is_device_path_end(dev_path_next)) {
+ dev_path = dev_path_next;
+ dev_path_next = next_device_path_node(dev_path);
+ }
+
+ return dev_path->sub_type;
+}
+
char *device_path_to_partuuid(struct efi_device_path *dev_path)
{
struct efi_device_path *dev_path_node;
diff --git a/include/efi.h b/include/efi.h
index 439803c294..04dffaae5a 100644
--- a/include/efi.h
+++ b/include/efi.h
@@ -682,6 +682,7 @@ typedef union {
struct efi_device_path *device_path_from_handle(efi_handle_t Handle);
char *device_path_to_str(struct efi_device_path *dev_path);
u8 device_path_to_type(struct efi_device_path *dev_path);
+u8 device_path_to_subtype(struct efi_device_path *dev_path);
char *device_path_to_partuuid(struct efi_device_path *dev_path);
const char *efi_guid_string(efi_guid_t *g);
--
2.30.2
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