USB: repair USBDEVFS_CONNECT ioctl
For as long as I've known about it, the USBDEVFS_CONNECT ioctl hasn't
done what it's supposed to. The current code reprobes _all_ the
unbound USB interfaces; this patch (as1021) makes it reprobe only the
interface for which it was called.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 1f4f6d0..85ec65a 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -1373,9 +1373,10 @@
/* let kernel drivers try to (re)bind to the interface */
case USBDEVFS_CONNECT:
- usb_unlock_device(ps->dev);
- retval = bus_rescan_devices(intf->dev.bus);
- usb_lock_device(ps->dev);
+ if (!intf->dev.driver)
+ retval = device_attach(&intf->dev);
+ else
+ retval = -EBUSY;
break;
/* talk directly to the interface's driver */