[U-Boot] [PATCH 1/1] efi_loader: close protocols in UnloadImage()

[Heinrich Schuchardt]

When UnloadImage() is called all protocols opened by the image have to be
closed.

Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
 lib/efi_loader/efi_boottime.c | 35 ++++++++++++++++++++++++++++++++---
 1 file changed, 32 insertions(+), 3 deletions(-)

diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 5714deca70..f4e3186ffc 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -2873,12 +2873,41 @@ efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle,
  * @image_obj:			handle of the loaded image
  * @loaded_image_protocol:	loaded image protocol
  */
-static void efi_delete_image(struct efi_loaded_image_obj *image_obj,
-			     struct efi_loaded_image *loaded_image_protocol)
-{
+static efi_status_t efi_delete_image
+			(struct efi_loaded_image_obj *image_obj,
+			 struct efi_loaded_image *loaded_image_protocol)
+{
+	struct efi_object *efiobj, *posobj;
+	efi_status_t r, ret = EFI_SUCCESS;
+
+	list_for_each_entry_safe(efiobj, posobj, &efi_obj_list, link) {
+		struct efi_handler *prot, *protpos;
+
+		list_for_each_entry_safe(prot, protpos, &efiobj->protocols,
+					 link) {
+			struct efi_open_protocol_info_item *info, *infopos;
+
+			list_for_each_entry_safe(info, infopos,
+						 &prot->open_infos, link) {
+				if (info->info.agent_handle !=
+				    (efi_handle_t)image_obj)
+					continue;
+				r = EFI_CALL(efi_close_protocol
+						(efiobj, prot->guid,
+						 info->info.agent_handle,
+						 info->info.controller_handle
+						));
+				if (r !=  EFI_SUCCESS)
+					ret = r;
+			}
+		}
+	}
+
 	efi_free_pages((uintptr_t)loaded_image_protocol->image_base,
 		       efi_size_in_pages(loaded_image_protocol->image_size));
 	efi_delete_handle(&image_obj->header);
+
+	return ret;
 }

 /**
--
2.20.1