diff options
Diffstat (limited to 'drivers/usb/core/hcd.c')
| -rw-r--r-- | drivers/usb/core/hcd.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index ace9f8442e5..73cbbd85219 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -337,6 +337,17 @@ static const u8 ss_rh_config_descriptor[] = { 0x02, 0x00 /* __le16 ss_wBytesPerInterval; 15 bits for max 15 ports */ }; +/* authorized_default behaviour: + * -1 is authorized for all devices except wireless (old behaviour) + * 0 is unauthorized for all devices + * 1 is authorized for all devices + */ +static int authorized_default = -1; +module_param(authorized_default, int, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(authorized_default, + "Default USB device authorization: 0 is not authorized, 1 is " + "authorized, -1 is authorized except for wireless USB (default, " + "old behaviour"); /*-------------------------------------------------------------------------*/ /** @@ -1764,6 +1775,8 @@ int usb_hcd_alloc_bandwidth(struct usb_device *udev, struct usb_interface *iface = usb_ifnum_to_if(udev, cur_alt->desc.bInterfaceNumber); + if (!iface) + return -EINVAL; if (iface->resetting_device) { /* * The USB core just reset the device, so the xHCI host @@ -2371,7 +2384,11 @@ int usb_add_hcd(struct usb_hcd *hcd, dev_info(hcd->self.controller, "%s\n", hcd->product_desc); - hcd->authorized_default = hcd->wireless? 0 : 1; + /* Keep old behaviour if authorized_default is not in [0, 1]. */ + if (authorized_default < 0 || authorized_default > 1) + hcd->authorized_default = hcd->wireless? 0 : 1; + else + hcd->authorized_default = authorized_default; set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); /* HC is in reset state, but accessible. Now do the one-time init, |