target_submit_cmd is now only for simple drivers that do their own sync during shutdown and do not use target_stop_session. It will never return a failure, so we can remove that code from the driver. Note: Before these patches target_submit_cmd would never return an error for usb since it does not use target_stop_session. If it did then we would have hit a refcount error here: transport_send_check_condition_and_sense(se_cmd, TCM_UNSUPPORTED_SCSI_OPCODE, 1); transport_generic_free_cmd(&cmd->se_cmd, 0); transport_send_check_condition_and_sense calls queue_status and the driver can sometimes do transport_generic_free_cmd from there via uasp_status_data_cmpl. In that case, the above transport_generic_free_cmd would then hit a refcount error. So that other use of the above error path in the driver is also probably wrong, but someone with the hardware needs to fix that. Cc: Felipe Balbi <balbi@xxxxxxxxxx> Signed-off-by: Mike Christie <michael.christie@xxxxxxxxxx> Reviewed-by: Christoph Hellwig <hch@xxxxxx> --- drivers/usb/gadget/function/f_tcm.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c index dcce6e2605f5..7acb507946e6 100644 --- a/drivers/usb/gadget/function/f_tcm.c +++ b/drivers/usb/gadget/function/f_tcm.c @@ -1058,11 +1058,9 @@ static void usbg_cmd_work(struct work_struct *work) goto out; } - if (target_submit_cmd(se_cmd, tv_nexus->tvn_se_sess, cmd->cmd_buf, - cmd->sense_iu.sense, cmd->unpacked_lun, 0, - cmd->prio_attr, dir, flags) < 0) - goto out; - + target_submit_cmd(se_cmd, tv_nexus->tvn_se_sess, cmd->cmd_buf, + cmd->sense_iu.sense, cmd->unpacked_lun, 0, + cmd->prio_attr, dir, flags); return; out: @@ -1189,11 +1187,9 @@ static void bot_cmd_work(struct work_struct *work) goto out; } - if (target_submit_cmd(se_cmd, tv_nexus->tvn_se_sess, - cmd->cmd_buf, cmd->sense_iu.sense, cmd->unpacked_lun, - cmd->data_len, cmd->prio_attr, dir, 0) < 0) - goto out; - + target_submit_cmd(se_cmd, tv_nexus->tvn_se_sess, + cmd->cmd_buf, cmd->sense_iu.sense, cmd->unpacked_lun, + cmd->data_len, cmd->prio_attr, dir, 0); return; out: -- 2.25.1