diff options
Diffstat (limited to 'drivers/usb/host/xhci-ring.c')
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index b60661fe05e..910c5f3352b 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -685,6 +685,9 @@ int xhci_bulk_tx(struct usb_device *udev, unsigned long pipe, reset_ep(udev, ep_index); ring = virt_dev->eps[ep_index].ring; + if (!ring) + return -EINVAL; + /* * How much data is (potentially) left before the 64KB boundary? * XHCI Spec puts restriction( TABLE 49 and 6.4.1 section of XHCI Spec) @@ -871,6 +874,8 @@ int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe, ep_index = usb_pipe_ep_index(pipe); ep_ring = virt_dev->eps[ep_index].ring; + if (!ep_ring) + return -EINVAL; /* * Check to see if the max packet size for the default control |