[PATCH v2] efi_loader: remove efi_delete_handle on loadfile2

[Ilias Apalodimas]

Loadfile2 code is installing two protocols on it's own handle
and uses efi_delete_handle() to clean it up on failure(s).  However
commit 05c4c9e21ae6 ("efi_loader: define internal implementations of install/uninstallmultiple")
prepares the ground for us to clean up efi_elete_handle() used in favor of
Install/UninstallMultipleProtocol.

While at it clean up the non needed void casts to (void *)  on the protol
installation

Signed-off-by: Ilias Apalodimas <ilias.apalodimas at linaro.org>
---
Changes since v1:
- remove non needed void* and while at it clean up the protocol
  installation as well (from the void*)

 cmd/bootefi.c                    |  6 ++++--
 include/efi_loader.h             |  2 +-
 lib/efi_loader/efi_load_initrd.c | 19 +++++++++++++++----
 3 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/cmd/bootefi.c b/cmd/bootefi.c
index b93c0d3d4c02..2a7d42925d65 100644
--- a/cmd/bootefi.c
+++ b/cmd/bootefi.c
@@ -394,8 +394,10 @@ static efi_status_t do_bootefi_exec(efi_handle_t handle, void *load_options)
 out:
 	free(load_options);
 
-	if (IS_ENABLED(CONFIG_EFI_LOAD_FILE2_INITRD))
-		efi_initrd_deregister();
+	if (IS_ENABLED(CONFIG_EFI_LOAD_FILE2_INITRD)) {
+		if (efi_initrd_deregister() != EFI_SUCCESS)
+			log_err("Failed to remove loadfile2 for initrd\n");
+	}
 
 	/* Control is returned to U-Boot, disable EFI watchdog */
 	efi_set_watchdog(0);
diff --git a/include/efi_loader.h b/include/efi_loader.h
index 1bac3f49a3e5..0c6c95ba4641 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -570,7 +570,7 @@ efi_status_t efi_net_register(void);
 /* Called by bootefi to make the watchdog available */
 efi_status_t efi_watchdog_register(void);
 efi_status_t efi_initrd_register(void);
-void efi_initrd_deregister(void);
+efi_status_t efi_initrd_deregister(void);
 /* Called by bootefi to make SMBIOS tables available */
 /**
  * efi_acpi_register() - write out ACPI tables
diff --git a/lib/efi_loader/efi_load_initrd.c b/lib/efi_loader/efi_load_initrd.c
index 87fde3f88c2b..193433782c24 100644
--- a/lib/efi_loader/efi_load_initrd.c
+++ b/lib/efi_loader/efi_load_initrd.c
@@ -213,7 +213,7 @@ efi_status_t efi_initrd_register(void)
 						       &efi_guid_device_path, &dp_lf2_handle,
 						       /* LOAD_FILE2 */
 						       &efi_guid_load_file2_protocol,
-						       (void *)&efi_lf2_protocol,
+						       &efi_lf2_protocol,
 						       NULL);
 
 	return ret;
@@ -227,11 +227,22 @@ efi_status_t efi_initrd_register(void)
  *
  * Return:	status code
  */
-void efi_initrd_deregister(void)
+efi_status_t efi_initrd_deregister(void)
 {
+	efi_status_t ret;
+
 	if (!efi_initrd_handle)
-		return;
+		return EFI_SUCCESS;
 
-	efi_delete_handle(efi_initrd_handle);
+	ret = efi_uninstall_multiple_protocol_interfaces(efi_initrd_handle,
+							 /* initramfs */
+							 &efi_guid_device_path,
+							 &dp_lf2_handle,
+							 /* LOAD_FILE2 */
+							 &efi_guid_load_file2_protocol,
+							 &efi_lf2_protocol,
+							 NULL);
 	efi_initrd_handle = NULL;
+
+	return ret;
 }
-- 
2.37.2