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usb: dwc3: gadget: giveback request if we can't kick it

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There might be situations where a Start Transfer
command might fail, if that ever happens, instead of
simply removing the request from our list, we should
give the request back to the gadget driver,
otherwise we might eventually starve it from requests.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi 2016-09-22 10:59:12 +03:00
parent 8897a761c3
commit 15b8d9332b
1 changed files with 1 additions and 4 deletions
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5
drivers/usb/dwc3/gadget.c
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@ -987,7 +987,6 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep, u16 cmd_param)
{
struct dwc3_gadget_ep_cmd_params params;
struct dwc3_request *req;
struct dwc3 *dwc = dep->dwc;
int starting;
int ret;
u32 cmd;
@ -1020,9 +1019,7 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep, u16 cmd_param)
* here and stop, unmap, free and del each of the linked
* requests instead of what we do now.
*/
usb_gadget_unmap_request(&dwc->gadget, &req->request,
req->direction);
list_del(&req->list);
dwc3_gadget_giveback(dep, req, ret);
return ret;
}