From: Paul Zimmerman Date: Sat, 13 Jul 2013 21:53:50 +0000 (-0700) Subject: staging: dwc2: optimize dwc2_hc_handle_tt_clear() a bit X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=399fdf9e57457444bbb5ab33eefa1f8723e9ea05;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git staging: dwc2: optimize dwc2_hc_handle_tt_clear() a bit Make dwc2_hc_handle_tt_clear() return early if the device is hi-speed. Signed-off-by: Paul Zimmerman Tested-by: Stephen Warren Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/dwc2/hcd_intr.c b/drivers/staging/dwc2/hcd_intr.c index 22836f5f7ff6..093a75c3d0db 100644 --- a/drivers/staging/dwc2/hcd_intr.c +++ b/drivers/staging/dwc2/hcd_intr.c @@ -89,15 +89,20 @@ static void dwc2_hc_handle_tt_clear(struct dwc2_hsotg *hsotg, { struct urb *usb_urb; - if (!chan->qh || !qtd->urb) + if (!chan->qh) + return; + + if (chan->qh->dev_speed == USB_SPEED_HIGH) + return; + + if (!qtd->urb) return; usb_urb = qtd->urb->priv; - if (!usb_urb || !usb_urb->dev) + if (!usb_urb || !usb_urb->dev || !usb_urb->dev->tt) return; - if (chan->qh->dev_speed != USB_SPEED_HIGH && - qtd->urb->status != -EPIPE && qtd->urb->status != -EREMOTEIO) { + if (qtd->urb->status != -EPIPE && qtd->urb->status != -EREMOTEIO) { chan->qh->tt_buffer_dirty = 1; if (usb_hub_clear_tt_buffer(usb_urb)) /* Clear failed; let's hope things work anyway */