diff options
Diffstat (limited to 'drivers/usb/gadget/function/u_ether.c')
| -rw-r--r-- | drivers/usb/gadget/function/u_ether.c | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c index 74e9f5b5a45d..930f58f0ba32 100644 --- a/drivers/usb/gadget/function/u_ether.c +++ b/drivers/usb/gadget/function/u_ether.c @@ -741,19 +741,13 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb, req->length = length; - /* throttle highspeed IRQ rate back slightly */ - if (gadget_is_dualspeed(dev->gadget) && - (dev->gadget->speed == USB_SPEED_HIGH)) { - dev->tx_qlen++; - if (dev->tx_qlen == (dev->qmult/2)) { - req->no_interrupt = 0; - dev->tx_qlen = 0; - } else { - req->no_interrupt = 1; - } - } else { - req->no_interrupt = 0; - } + /* throttle high/super speed IRQ rate back slightly */ + if (gadget_is_dualspeed(dev->gadget)) + req->no_interrupt = (((dev->gadget->speed == USB_SPEED_HIGH || + dev->gadget->speed == USB_SPEED_SUPER)) && + !list_empty(&dev->tx_reqs)) + ? ((atomic_read(&dev->tx_qlen) % dev->qmult) != 0) + : 0; retval = usb_ep_queue(in, req, GFP_ATOMIC); switch (retval) { |