[PATCH 1/2] efi_loader: allow booting from short dev only DP

[Heinrich Schuchardt]

Allow booting from a short form device-path without file path, e.g.

    /HD(1,GPT,5ef79931-a1aa-4c70-9d67-611e8f69eafd,0x800,0x1000)

Signed-off-by: Heinrich Schuchardt <xypron.g...@gmx.de>
---
 lib/efi_loader/efi_bootmgr.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/lib/efi_loader/efi_bootmgr.c b/lib/efi_loader/efi_bootmgr.c
index 93f6590530..9b65f34035 100644
--- a/lib/efi_loader/efi_bootmgr.c
+++ b/lib/efi_loader/efi_bootmgr.c
@@ -44,7 +44,7 @@ static const struct efi_runtime_services *rs;
 static
 struct efi_device_path *expand_media_path(struct efi_device_path *device_path)
 {
-       struct efi_device_path *dp, *full_path;
+       struct efi_device_path *dp, *rem, *full_path;
        efi_handle_t handle;
        efi_status_t ret;

@@ -57,11 +57,10 @@ struct efi_device_path *expand_media_path(struct 
efi_device_path *device_path)
         * booting from removable media.
         */
        dp = device_path;
-       ret = EFI_CALL(efi_locate_device_path(
-                               &efi_simple_file_system_protocol_guid,
-                               &dp, &handle));
+       handle = efi_dp_find_obj(dp, &efi_simple_file_system_protocol_guid,
+                                &rem);
        if (ret == EFI_SUCCESS) {
-               if (dp->type == DEVICE_PATH_TYPE_END) {
+               if (rem->type == DEVICE_PATH_TYPE_END) {
                        dp = efi_dp_from_file(NULL, 0,
                                              "/EFI/BOOT/" BOOTEFI_NAME);
                        full_path = efi_dp_append(device_path, dp);
--
2.36.1