USB: add a blacklist for devices that can't handle some things we throw at them.

[safe/jmp/linux-2.6] / drivers / usb / core / driver.c

diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index d6eb5ce..f9196a0 100644 (file)
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -28,24 +28,16 @@
 #include "hcd.h"
 #include "usb.h"
 
-static int usb_match_one_id(struct usb_interface *interface,
-                           const struct usb_device_id *id);
-
-struct usb_dynid {
-       struct list_head node;
-       struct usb_device_id id;
-};
-
 #ifdef CONFIG_HOTPLUG
 
 /*
  * Adds a new dynamic USBdevice ID to this driver,
  * and cause the driver to probe for all devices again.
  */
-static ssize_t store_new_id(struct device_driver *driver,
-                           const char *buf, size_t count)
+ssize_t usb_store_new_id(struct usb_dynids *dynids,
+                        struct device_driver *driver,
+                        const char *buf, size_t count)
 {
-       struct usb_driver *usb_drv = to_usb_driver(driver);
        struct usb_dynid *dynid;
        u32 idVendor = 0;
        u32 idProduct = 0;
@@ -65,9 +57,9 @@ static ssize_t store_new_id(struct device_driver *driver,
        dynid->id.idProduct = idProduct;
        dynid->id.match_flags = USB_DEVICE_ID_MATCH_DEVICE;
 
-       spin_lock(&usb_drv->dynids.lock);
-       list_add_tail(&usb_drv->dynids.list, &dynid->node);
-       spin_unlock(&usb_drv->dynids.lock);
+       spin_lock(&dynids->lock);
+       list_add_tail(&dynids->list, &dynid->node);
+       spin_unlock(&dynids->lock);
 
        if (get_driver(driver)) {
                retval = driver_attach(driver);
@@ -78,6 +70,15 @@ static ssize_t store_new_id(struct device_driver *driver,
                return retval;
        return count;
 }
+EXPORT_SYMBOL_GPL(usb_store_new_id);
+
+static ssize_t store_new_id(struct device_driver *driver,
+                           const char *buf, size_t count)
+{
+       struct usb_driver *usb_drv = to_usb_driver(driver);
+
+       return usb_store_new_id(&usb_drv->dynids, driver, buf, count);
+}
 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
 
 static int usb_create_newid_file(struct usb_driver *usb_drv)
@@ -365,19 +366,8 @@ void usb_driver_release_interface(struct usb_driver *driver,
 EXPORT_SYMBOL(usb_driver_release_interface);
 
 /* returns 0 if no match, 1 if match */
-static int usb_match_one_id(struct usb_interface *interface,
-                           const struct usb_device_id *id)
+int usb_match_device(struct usb_device *dev, const struct usb_device_id *id)
 {
-       struct usb_host_interface *intf;
-       struct usb_device *dev;
-
-       /* proc_connectinfo in devio.c may call us with id == NULL. */
-       if (id == NULL)
-               return 0;
-
-       intf = interface->cur_altsetting;
-       dev = interface_to_usbdev(interface);
-
        if ((id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) &&
            id->idVendor != le16_to_cpu(dev->descriptor.idVendor))
                return 0;
@@ -408,6 +398,26 @@ static int usb_match_one_id(struct usb_interface *interface,
            (id->bDeviceProtocol != dev->descriptor.bDeviceProtocol))
                return 0;
 
+       return 1;
+}
+
+/* returns 0 if no match, 1 if match */
+int usb_match_one_id(struct usb_interface *interface,
+                    const struct usb_device_id *id)
+{
+       struct usb_host_interface *intf;
+       struct usb_device *dev;
+
+       /* proc_connectinfo in devio.c may call us with id == NULL. */
+       if (id == NULL)
+               return 0;
+
+       intf = interface->cur_altsetting;
+       dev = interface_to_usbdev(interface);
+
+       if (!usb_match_device(dev, id))
+               return 0;
+
        /* The interface class, subclass, and protocol should never be
         * checked for a match if the device class is Vendor Specific,
         * unless the match record specifies the Vendor ID. */
@@ -432,6 +442,8 @@ static int usb_match_one_id(struct usb_interface *interface,
 
        return 1;
 }
+EXPORT_SYMBOL_GPL(usb_match_one_id);
+
 /**
  * usb_match_id - find first usb_device_id matching device or interface
  * @interface: the interface of interest
@@ -740,6 +752,7 @@ EXPORT_SYMBOL_GPL(usb_deregister_device_driver);
  * usb_register_driver - register a USB interface driver
  * @new_driver: USB operations for the interface driver
  * @owner: module owner of this driver.
+ * @mod_name: module name string
  *
  * Registers a USB interface driver with the USB core.  The list of
  * unattached interfaces will be rescanned whenever a new driver is
@@ -750,7 +763,8 @@ EXPORT_SYMBOL_GPL(usb_deregister_device_driver);
  * usb_register_dev() to enable that functionality.  This function no longer
  * takes care of that.
  */
-int usb_register_driver(struct usb_driver *new_driver, struct module *owner)
+int usb_register_driver(struct usb_driver *new_driver, struct module *owner,
+                       const char *mod_name)
 {
        int retval = 0;
 
@@ -763,6 +777,7 @@ int usb_register_driver(struct usb_driver *new_driver, struct module *owner)
        new_driver->drvwrap.driver.probe = usb_probe_interface;
        new_driver->drvwrap.driver.remove = usb_unbind_interface;
        new_driver->drvwrap.driver.owner = owner;
+       new_driver->drvwrap.driver.mod_name = mod_name;
        spin_lock_init(&new_driver->dynids.lock);
        INIT_LIST_HEAD(&new_driver->dynids.list);