diff options
Diffstat (limited to 'drivers/usb/core/devio.c')
| -rw-r--r-- | drivers/usb/core/devio.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index 90e18f6..f3ba2e0 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -1043,6 +1043,20 @@ static int proc_bulk(struct dev_state *ps, void __user *arg) return ret; } +static void check_reset_of_active_ep(struct usb_device *udev, + unsigned int epnum, char *ioctl_name) +{ + struct usb_host_endpoint **eps; + struct usb_host_endpoint *ep; + + eps = (epnum & USB_DIR_IN) ? udev->ep_in : udev->ep_out; + ep = eps[epnum & 0x0f]; + if (ep && !list_empty(&ep->urb_list)) + dev_warn(&udev->dev, "Process %d (%s) called USBDEVFS_%s for active endpoint 0x%02x\n", + task_pid_nr(current), current->comm, + ioctl_name, epnum); +} + static int proc_resetep(struct dev_state *ps, void __user *arg) { unsigned int ep; @@ -1056,6 +1070,7 @@ static int proc_resetep(struct dev_state *ps, void __user *arg) ret = checkintf(ps, ret); if (ret) return ret; + check_reset_of_active_ep(ps->dev, ep, "RESETEP"); usb_reset_endpoint(ps->dev, ep); return 0; } @@ -1074,6 +1089,7 @@ static int proc_clearhalt(struct dev_state *ps, void __user *arg) ret = checkintf(ps, ret); if (ret) return ret; + check_reset_of_active_ep(ps->dev, ep, "CLEAR_HALT"); if (ep & USB_DIR_IN) pipe = usb_rcvbulkpipe(ps->dev, ep & 0x7f); else |