diff options
Diffstat (limited to 'drivers/usb/dwc2')
| -rw-r--r-- | drivers/usb/dwc2/hcd_intr.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/hcd_intr.c b/drivers/usb/dwc2/hcd_intr.c index 1faf1c6410e1..3d686540d250 100644 --- a/drivers/usb/dwc2/hcd_intr.c +++ b/drivers/usb/dwc2/hcd_intr.c @@ -87,6 +87,7 @@ static void dwc2_hc_handle_tt_clear(struct dwc2_hsotg *hsotg, struct dwc2_host_chan *chan, struct dwc2_qtd *qtd) { + struct usb_device *root_hub = dwc2_hsotg_to_hcd(hsotg)->self.root_hub; struct urb *usb_urb; if (!chan->qh) @@ -102,6 +103,15 @@ static void dwc2_hc_handle_tt_clear(struct dwc2_hsotg *hsotg, if (!usb_urb || !usb_urb->dev || !usb_urb->dev->tt) return; + /* + * The root hub doesn't really have a TT, but Linux thinks it + * does because how could you have a "high speed hub" that + * directly talks directly to low speed devices without a TT? + * It's all lies. Lies, I tell you. + */ + if (usb_urb->dev->tt->hub == root_hub) + return; + if (qtd->urb->status != -EPIPE && qtd->urb->status != -EREMOTEIO) { chan->qh->tt_buffer_dirty = 1; if (usb_hub_clear_tt_buffer(usb_urb)) |