efi_loader: disk: not delete BLK device for BLK(IF_TYPE_EFI_LOADER) devices

When we create an efi_disk device with an UEFI application using driver
binding protocol, the 'efi_driver' framework tries to create
a corresponding block device(UCLASS_BLK/IF_TYPE_EFI). This will lead to
calling a PROBE callback, efi_disk_probe().
In this case, however, we don't need to create another "efi_disk" device
as we already have this device instance.

So we should avoid recursively invoke further processing in the callback
function.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c
index 940390a..34bb662 100644 (file)
--- a/lib/efi_loader/efi_disk.c
+++ b/lib/efi_loader/efi_disk.c
@@ -648,13 +648,17 @@ static int efi_disk_probe(void *ctx, struct event *event)
 static int efi_disk_delete_raw(struct udevice *dev)
 {
        efi_handle_t handle;
+       struct blk_desc *desc;
        struct efi_disk_obj *diskobj;
 
        if (dev_tag_get_ptr(dev, DM_TAG_EFI, (void **)&handle))
                return -1;
 
-       diskobj = container_of(handle, struct efi_disk_obj, header);
-       efi_free_pool(diskobj->dp);
+       desc = dev_get_uclass_plat(dev);
+       if (desc->if_type != IF_TYPE_EFI_LOADER) {
+               diskobj = container_of(handle, struct efi_disk_obj, header);
+               efi_free_pool(diskobj->dp);
+       }
 
        efi_delete_handle(handle);
        dev_tag_del(dev, DM_TAG_EFI);