If creating the block device fails,
* delete all created objects and references * close the protocol interface on the controller
Signed-off-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com --- include/efi_driver.h | 2 +- lib/efi_driver/efi_block_device.c | 60 +++++++++++++++++-------------- lib/efi_driver/efi_uclass.c | 23 ++++++------ 3 files changed, 46 insertions(+), 39 deletions(-)
diff --git a/include/efi_driver.h b/include/efi_driver.h index 2b62219c5b..dc0c1c7ac0 100644 --- a/include/efi_driver.h +++ b/include/efi_driver.h @@ -25,7 +25,7 @@ struct efi_driver_ops { const efi_guid_t *protocol; const efi_guid_t *child_protocol; - int (*bind)(efi_handle_t handle, void *interface); + efi_status_t (*bind)(efi_handle_t handle, void *interface); };
/* diff --git a/lib/efi_driver/efi_block_device.c b/lib/efi_driver/efi_block_device.c index 3177ab67b8..9ccc148590 100644 --- a/lib/efi_driver/efi_block_device.c +++ b/lib/efi_driver/efi_block_device.c @@ -112,12 +112,13 @@ static ulong efi_bl_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt, * * @handle: handle * @interface: block io protocol - * Return: 0 = success + * Return: status code */ -static int efi_bl_bind(efi_handle_t handle, void *interface) +static efi_status_t efi_bl_bind(efi_handle_t handle, void *interface) { - struct udevice *bdev, *parent = dm_root(); - int ret, devnum; + struct udevice *bdev = NULL, *parent = dm_root(); + efi_status_t ret; + int devnum; char *name; struct efi_object *obj = efi_search_obj(handle); struct efi_block_io *io = interface; @@ -125,28 +126,28 @@ static int efi_bl_bind(efi_handle_t handle, void *interface)
EFI_PRINT("%s: handle %p, interface %p\n", __func__, handle, io);
- if (!obj) - return -ENOENT; + if (!obj || !interface) + return EFI_INVALID_PARAMETER;
devnum = blk_find_max_devnum(UCLASS_EFI_LOADER); if (devnum == -ENODEV) devnum = 0; else if (devnum < 0) - return devnum; + return EFI_OUT_OF_RESOURCES;
name = calloc(1, 18); /* strlen("efiblk#2147483648") + 1 */ if (!name) - return -ENOMEM; + return EFI_OUT_OF_RESOURCES; sprintf(name, "efiblk#%d", devnum);
/* Create driver model udevice for the EFI block io device */ - ret = blk_create_device(parent, "efi_blk", name, UCLASS_EFI_LOADER, - devnum, io->media->block_size, - (lbaint_t)io->media->last_block, &bdev); - if (ret) - return ret; - if (!bdev) - return -ENOENT; + if (blk_create_device(parent, "efi_blk", name, UCLASS_EFI_LOADER, + devnum, io->media->block_size, + (lbaint_t)io->media->last_block, &bdev)) { + ret = EFI_OUT_OF_RESOURCES; + free(name); + goto err; + } /* Set the DM_FLAG_NAME_ALLOCED flag to avoid a memory leak */ device_set_name_alloced(bdev);
@@ -154,20 +155,25 @@ static int efi_bl_bind(efi_handle_t handle, void *interface) plat->handle = handle; plat->io = interface;
- /* - * FIXME: necessary because we won't do almost nothing in - * efi_disk_create() when called from device_probe(). - */ - if (efi_link_dev(handle, bdev)) - /* FIXME: cleanup for bdev */ - return ret; - - ret = device_probe(bdev); - if (ret) - return ret; + if (efi_link_dev(handle, bdev)) { + ret = EFI_OUT_OF_RESOURCES; + goto err; + } + + if (device_probe(bdev)) { + ret = EFI_DEVICE_ERROR; + goto err; + } EFI_PRINT("%s: block device '%s' created\n", __func__, bdev->name);
- return 0; + return EFI_SUCCESS; + +err: + efi_unlink_dev(handle); + if (bdev) + device_unbind(bdev); + + return ret; }
/* Block device driver operators */ diff --git a/lib/efi_driver/efi_uclass.c b/lib/efi_driver/efi_uclass.c index 74dd003243..5a285aad89 100644 --- a/lib/efi_driver/efi_uclass.c +++ b/lib/efi_driver/efi_uclass.c @@ -11,7 +11,7 @@ * The uclass provides the bind, start, and stop entry points for the driver * binding protocol. * - * In bind() and stop() it checks if the controller implements the protocol + * In supported() and bind() it checks if the controller implements the protocol * supported by the EFI driver. In the start() function it calls the bind() * function of the EFI driver. In the stop() function it destroys the child * controllers. @@ -144,18 +144,19 @@ static efi_status_t EFIAPI efi_uc_start( goto out; } ret = check_node_type(controller_handle); - if (ret != EFI_SUCCESS) { - r = EFI_CALL(systab.boottime->close_protocol( - controller_handle, bp->ops->protocol, - this->driver_binding_handle, - controller_handle)); - if (r != EFI_SUCCESS) - EFI_PRINT("Failure to close handle\n"); + if (ret != EFI_SUCCESS) + goto err; + ret = bp->ops->bind(controller_handle, interface); + if (ret == EFI_SUCCESS) goto out; - }
- /* TODO: driver specific stuff */ - bp->ops->bind(controller_handle, interface); +err: + r = EFI_CALL(systab.boottime->close_protocol( + controller_handle, bp->ops->protocol, + this->driver_binding_handle, + controller_handle)); + if (r != EFI_SUCCESS) + EFI_PRINT("Failure to close handle\n");
out: return EFI_EXIT(ret);