Make it clearer why InstallMultipleProtocolInterfaces is invoked with two NULLs:
* rename guid to esp_guid * put protocol GUIDs and the related interfaces on same lines * add comment
Signed-off-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com --- lib/efi_loader/efi_disk.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c index e6a356b589..3e392a4b51 100644 --- a/lib/efi_loader/efi_disk.c +++ b/lib/efi_loader/efi_disk.c @@ -395,7 +395,7 @@ static efi_status_t efi_disk_add_dev( { struct efi_disk_obj *diskobj; struct efi_object *handle; - const efi_guid_t *guid = NULL; + const efi_guid_t *esp_guid = NULL; efi_status_t ret;
/* Don't add empty devices */ @@ -439,7 +439,7 @@ static efi_status_t efi_disk_add_dev( efi_free_pool(node); diskobj->media.last_block = part_info->size - 1; if (part_info->bootable & PART_EFI_SYSTEM_PARTITION) - guid = &efi_system_partition_guid; + esp_guid = &efi_system_partition_guid; } else { diskobj->dp = efi_dp_from_part(desc, part); diskobj->media.last_block = desc->lba - 1; @@ -454,12 +454,16 @@ static efi_status_t efi_disk_add_dev( * in this case. */ handle = &diskobj->header; - ret = efi_install_multiple_protocol_interfaces(&handle, - &efi_guid_device_path, - diskobj->dp, - &efi_block_io_guid, - &diskobj->ops, guid, - NULL, NULL); + ret = efi_install_multiple_protocol_interfaces( + &handle, + &efi_guid_device_path, diskobj->dp, + &efi_block_io_guid, &diskobj->ops, + /* + * esp_guid must be last entry as it + * can be NULL. Its interface is NULL. + */ + esp_guid, NULL, + NULL); if (ret != EFI_SUCCESS) goto error;