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

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>

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 6f6f0b3..7113a9f 100644 (file)
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -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;