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usb: gadget: f_tcm: Send sense on cancelled transfer

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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>
This commit is contained in:
Thinh Nguyen
2024-12-11 00:33:44 +00:00
committed by Greg Kroah-Hartman
parent 4726152153
commit 1d5d4e1153
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/gadget/function/f_tcm.c
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@@ -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)