diff options
| author | Stefan Koch <stefan.koch10@gmail.com> | 2015-08-08 11:32:52 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-08-14 16:55:54 -0700 |
| commit | de7718bd9c4d3db96991a98c2a0cb38258a04e47 (patch) | |
| tree | 51ddb0b59d5895bac4d19fb6ffa9fb2fbf39cb54 | |
| parent | 1d958bef45030acfc5578263e9de3bb07032b8da (diff) | |
usb: interface authorization: Control interface probing and claiming
Driver probings and interface claims get rejected
if an interface is not authorized.
Signed-off-by: Stefan Koch <skoch@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/core/driver.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 6b5063e7943f..941625465e2a 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -296,6 +296,10 @@ static int usb_probe_interface(struct device *dev) if (udev->authorized == 0) { dev_err(&intf->dev, "Device is not authorized for usage\n"); return error; + } else if (intf->authorized == 0) { + dev_err(&intf->dev, "Interface %d is not authorized for usage\n", + intf->altsetting->desc.bInterfaceNumber); + return error; } id = usb_match_dynamic_id(intf, driver); @@ -508,6 +512,10 @@ int usb_driver_claim_interface(struct usb_driver *driver, if (dev->driver) return -EBUSY; + /* reject claim if not iterface is not authorized */ + if (!iface->authorized) + return -ENODEV; + udev = interface_to_usbdev(iface); dev->driver = &driver->drvwrap.driver; |