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 --- lib/efi_loader/efi_disk.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-)
diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c index 8e33af76711f..f37f8c1ab0f1 100644 --- a/lib/efi_loader/efi_disk.c +++ b/lib/efi_loader/efi_disk.c @@ -603,6 +603,7 @@ static int efi_disk_probe(void *ctx, struct event *event) { struct udevice *dev; enum uclass_id id; + struct blk_desc *desc; struct udevice *child; int ret;
@@ -616,9 +617,16 @@ static int efi_disk_probe(void *ctx, struct event *event) return 0; }
- ret = efi_disk_create_raw(dev); - if (ret) - return -1; + /* + * avoid creating duplicated objects now that efi_driver + * has already created an efi_disk at this moment. + */ + desc = dev_get_uclass_plat(dev); + if (desc->if_type != IF_TYPE_EFI) { + ret = efi_disk_create_raw(dev); + if (ret) + return -1; + }
device_foreach_child(child, dev) { ret = efi_disk_create_part(child); @@ -642,13 +650,17 @@ 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) { + 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);