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usb: dwc3: gadget: don't WARN about lack of TRBs

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We don't need a big fat warning with stack dump at all. Running out of
TRBs is a normal condition and we will have more TRBs available as
soon as some transfers complete.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi 2017-05-17 13:19:06 +03:00
parent 225785aec7
commit 202adafe5a
1 changed files with 1 additions and 3 deletions
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4
drivers/usb/dwc3/gadget.c
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@ -953,7 +953,6 @@ static struct dwc3_trb *dwc3_ep_prev_trb(struct dwc3_ep *dep, u8 index)
static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep)
{
struct dwc3_trb *tmp;
struct dwc3 *dwc = dep->dwc;
u8 trbs_left;
/*
@ -965,8 +964,7 @@ static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep)
*/
if (dep->trb_enqueue == dep->trb_dequeue) {
tmp = dwc3_ep_prev_trb(dep, dep->trb_enqueue);
if (dev_WARN_ONCE(dwc->dev, tmp->ctrl & DWC3_TRB_CTRL_HWO,
"%s No TRBS left\n", dep->name))
if (tmp->ctrl & DWC3_TRB_CTRL_HWO)
return 0;
return DWC3_TRB_NUM - 1;