usb: gadget: f_tcm: Send sense on cancelled transfer

If the transfer is cancelled due to a disconnect or driver tear down
(error code -ESHUTDOWN), then just free the command. However, if it got
cancelled due to other reasons, then send a sense CHECK CONDITION status
with TCM_CHECK_CONDITION_ABORT_CMD status to host notifying the delivery
failure. Note that this is separate from TASK MANAGEMENT function abort
task command, which will require a separate response IU.

See UAS-r04 section 8.

Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/f2ae293c1fc39df4d242a2f724584bf4ec105ece.1733876548.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c
index da594767ba98c75b128c9a6e031036650058730b..c6bdd6023588d9f11a76e789364497df1baf7211 100644 (file)
--- a/drivers/usb/gadget/function/f_tcm.c
+++ b/drivers/usb/gadget/function/f_tcm.c
@@ -948,7 +948,8 @@ static void usbg_data_write_cmpl(struct usb_ep *ep, struct usb_request *req)
 
 cleanup:
        target_put_sess_cmd(se_cmd);
-       transport_generic_free_cmd(&cmd->se_cmd, 0);
+       transport_send_check_condition_and_sense(se_cmd,
+                       TCM_CHECK_CONDITION_ABORT_CMD, 0);
 }
 
 static int usbg_prepare_w_request(struct usbg_cmd *cmd, struct usb_request *req)