Commit 885e9747 authored Dec 03, 2007 by Alan Stern Committed by Greg Kroah-Hartman Feb 01, 2008

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>

parent badef819

drivers/usb/core/devio.c

+4 −3

Original line number	Diff line number	Diff line
		@@ -1373,9 +1373,10 @@ static int proc_ioctl(struct dev_state ps, struct usbdevfs_ioctl ctl)

		/* 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 */