Driver probings and interface claims could rejected
if an interface is not authorized.
Signed-off-by: Stefan Koch <skoch@xxxxxxx>
---
drivers/base/base.h | 1 -
drivers/usb/core/driver.c | 11 +++++++++++
include/linux/device.h | 1 +
3 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/base/base.h b/drivers/base/base.h
index 251c5d3..4b304a8 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -102,7 +102,6 @@ extern void container_dev_init(void);
struct kobject *virtual_device_parent(struct device *dev);
extern int bus_add_device(struct device *dev);
-extern void bus_probe_device(struct device *dev);
extern void bus_remove_device(struct device *dev);
extern int bus_add_driver(struct device_driver *drv);
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 818369a..9d4251f 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -295,6 +295,13 @@ 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) {
+ unsigned intfNr = intf->altsetting->desc.bInterfaceNumber;
+
+ dev_err(&intf->dev, "Interface 0x%02x is not authorized for usage\n",
+ intfNr);
+
+ return error;
}
id = usb_match_dynamic_id(intf, driver);
@@ -507,6 +514,10 @@ 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;
diff --git a/include/linux/device.h b/include/linux/device.h
index 6558af9..598d282 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -976,6 +976,7 @@ extern void device_release_driver(struct device *dev);
extern int __must_check device_attach(struct device *dev);
extern int __must_check driver_attach(struct device_driver *drv);
extern int __must_check device_reprobe(struct device *dev);
+extern void bus_probe_device(struct device *dev);
/*
* Easy functions for dynamically creating devices on the fly
--
2.1.4
--
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