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usb: dwc3: gadget: use update transfer command 

If we get a Xfer Not Ready event with reason
"Transfer Active" it means endpoint is still
transferring data and we can use that to issue
update transfer for this particular endpoint
in case we have pending requests in our queue.

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2015-09-28 14:49:02 -05:00
parent 8a1a9c9e45
commit 6bb4fe12ea
1 changed files with 5 additions and 4 deletions
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9
drivers/usb/dwc3/gadget.c
View File

@ -2012,15 +2012,16 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
dwc3_gadget_start_isoc(dwc, dep, event);
} else {
int active;
int ret;
active = event->status & DEPEVT_STATUS_TRANSFER_ACTIVE;
dwc3_trace(trace_dwc3_gadget, "%s: reason %s",
dep->name, event->status &
DEPEVT_STATUS_TRANSFER_ACTIVE
? "Transfer Active"
dep->name, active ? "Transfer Active"
: "Transfer Not Active");
ret = __dwc3_gadget_kick_transfer(dep, 0, 1);
ret = __dwc3_gadget_kick_transfer(dep, 0, !active);
if (!ret || ret == -EBUSY)
return;