target: make the ->get_cdb method optional

The most commonly used file, iblock and rd backends have no use for
a per-task CDB and thus don't need a method to copy it into their
otherwise unused CDB fields.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

1 files changed, 0 insertions, 12 deletions

diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c
index 524f41afea4..98aa5836448 100644
--- a/drivers/target/target_core_file.c
+++ b/drivers/target/target_core_file.c
@@ -609,17 +609,6 @@ static ssize_t fd_show_configfs_dev_params(
         return bl;
 }
 
-/*      fd_get_cdb(): (Part of se_subsystem_api_t template)
- *
- *
- */
-static unsigned char *fd_get_cdb(struct se_task *task)
-{
-        struct fd_request *req = FILE_REQ(task);
-
-        return req->fd_scsi_cdb;
-}
-
 /*      fd_get_device_rev(): (Part of se_subsystem_api_t template)
  *
  *
@@ -667,7 +656,6 @@ static struct se_subsystem_api fileio_template = {
         .check_configfs_dev_params = fd_check_configfs_dev_params,
         .set_configfs_dev_params = fd_set_configfs_dev_params,
         .show_configfs_dev_params = fd_show_configfs_dev_params,
-        .get_cdb                = fd_get_cdb,
         .get_device_rev         = fd_get_device_rev,
         .get_device_type        = fd_get_device_type,
         .get_blocks             = fd_get_blocks,