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usb: dwc3: gadget: simplify __dwc3_gadget_ep_queue() 

There is more possibility for sharing code if we just realise that now
__dwc3_gadget_kic_transfer() knows to break out early if there are no
TRBs left.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi 2017-09-05 14:32:55 +03:00
parent ccb94ebf9e
commit 64e0108029
1 changed files with 4 additions and 15 deletions
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19
drivers/usb/dwc3/gadget.c
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@ -1290,7 +1290,6 @@ static void dwc3_gadget_start_isoc(struct dwc3 *dwc,
static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
{
struct dwc3 *dwc = dep->dwc;
int ret = 0;
if (!dep->endpoint.desc) {
dev_err(dwc->dev, "%s: can't queue to disabled endpoint\n",
@ -1337,24 +1336,14 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
}
if ((dep->flags & DWC3_EP_BUSY) &&
!(dep->flags & DWC3_EP_MISSED_ISOC)) {
WARN_ON_ONCE(!dep->resource_index);
ret = __dwc3_gadget_kick_transfer(dep,
dep->resource_index);
}
!(dep->flags & DWC3_EP_MISSED_ISOC))
goto out;
goto out;
return 0;
}
if (!dwc3_calc_trbs_left(dep))
return 0;
ret = __dwc3_gadget_kick_transfer(dep, 0);
out:
if (ret == -EBUSY)
ret = 0;
return ret;
return __dwc3_gadget_kick_transfer(dep, 0);
}
static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request,