USB: usb_get_string should check the descriptor type

[pandora-kernel.git] / drivers / usb / core / message.c

diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 286b443..2aa2a58 100644 (file)
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -651,7 +651,7 @@ int usb_get_descriptor(struct usb_device *dev, unsigned char type,
                if (result <= 0 && result != -ETIMEDOUT)
                        continue;
                if (result > 1 && ((u8 *)buf)[1] != type) {
-                       result = -EPROTO;
+                       result = -ENODATA;
                        continue;
                }
                break;
@@ -694,8 +694,13 @@ static int usb_get_string(struct usb_device *dev, unsigned short langid,
                        USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
                        (USB_DT_STRING << 8) + index, langid, buf, size,
                        USB_CTRL_GET_TIMEOUT);
-               if (!(result == 0 || result == -EPIPE))
-                       break;
+               if (result == 0 || result == -EPIPE)
+                       continue;
+               if (result > 1 && ((u8 *) buf)[1] != USB_DT_STRING) {
+                       result = -ENODATA;
+                       continue;
+               }
+               break;
        }
        return result;
 }
@@ -1091,6 +1096,7 @@ void usb_disable_device(struct usb_device *dev, int skip_ep0)
                                continue;
                        dev_dbg(&dev->dev, "unregistering interface %s\n",
                                dev_name(&interface->dev));
+                       interface->unregistering = 1;
                        usb_remove_sysfs_intf_files(interface);
                        device_del(&interface->dev);
                }