diff mbox series

[v2,2/4] usb: dwc3: gadget: Store resource index of start cmd

Message ID 7a132f0067d0969be47a082eecadf268b28f86cf.1585523081.git.thinhn@synopsys.com (mailing list archive)
State Mainlined
Commit 9bc3395c24962e8c8e4f590ca2740c56e4a7a4fe
Headers show
Series usb: dwc3: gadget: Improve isoc starting mechanism | expand

Commit Message

Thinh Nguyen March 29, 2020, 11:13 p.m. UTC 
As long as the START_TRANSFER command completes, it provides the
resource index of the endpoint. Use this when we need to issue
END_TRANSFER command to an isoc endpoint to retry with a new
XferNotReady event.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
---
 drivers/usb/dwc3/gadget.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index b02832ad9e72..7989fe663300 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -387,9 +387,12 @@  int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned cmd,
 
 	trace_dwc3_gadget_ep_cmd(dep, cmd, params, cmd_status);
 
-	if (ret == 0 && DWC3_DEPCMD_CMD(cmd) == DWC3_DEPCMD_STARTTRANSFER) {
-		dep->flags |= DWC3_EP_TRANSFER_STARTED;
-		dwc3_gadget_ep_get_transfer_index(dep);
+	if (DWC3_DEPCMD_CMD(cmd) == DWC3_DEPCMD_STARTTRANSFER) {
+		if (ret == 0)
+			dep->flags |= DWC3_EP_TRANSFER_STARTED;
+
+		if (ret != -ETIMEDOUT)
+			dwc3_gadget_ep_get_transfer_index(dep);
 	}
 
 	if (saved_config) {