diff mbox series

[2/5] usb: gadget: f_tcm: Inform last transfer request

Message ID d4cddd59d93b1b52c8a93072edd398ee4e1cfeda.1588025916.git.thinhn@synopsys.com (mailing list archive)
State Superseded
Headers show
Series usb: dwc3: gadget: Handle streams | expand

Commit Message

Thinh Nguyen April 27, 2020, 10:27 p.m. UTC 
Set the request->is_last to each stream request to indicate that the
request is the last stream request of a transfer. The DWC3 controller
needs to know this info to properly allocate resource for different
streams. The current implementation of f_tcm uses a single request per
transfer, so every stream request is the last of its transfer.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
---
 drivers/usb/gadget/function/f_tcm.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c
index 36504931b2d1..2979cbe4d95f 100644
--- a/drivers/usb/gadget/function/f_tcm.c
+++ b/drivers/usb/gadget/function/f_tcm.c
@@ -531,6 +531,7 @@  static int uasp_prepare_r_request(struct usbg_cmd *cmd)
 		stream->req_in->sg = se_cmd->t_data_sg;
 	}
 
+	stream->req_in->is_last = 1;
 	stream->req_in->complete = uasp_status_data_cmpl;
 	stream->req_in->length = se_cmd->data_length;
 	stream->req_in->context = cmd;
@@ -554,6 +555,7 @@  static void uasp_prepare_status(struct usbg_cmd *cmd)
 	 */
 	iu->len = cpu_to_be16(se_cmd->scsi_sense_length);
 	iu->status = se_cmd->scsi_status;
+	stream->req_status->is_last = 1;
 	stream->req_status->context = cmd;
 	stream->req_status->length = se_cmd->scsi_sense_length + 16;
 	stream->req_status->buf = iu;
@@ -991,6 +993,7 @@  static int usbg_prepare_w_request(struct usbg_cmd *cmd, struct usb_request *req)
 		req->sg = se_cmd->t_data_sg;
 	}
 
+	req->is_last = 1;
 	req->complete = usbg_data_write_cmpl;
 	req->length = se_cmd->data_length;
 	req->context = cmd;