redonkable/alistair23-linux
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USB: repair USBDEVFS_CONNECT ioctl

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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>
This commit is contained in:
Alan Stern 2007-12-03 15:42:10 -05:00 committed by Greg Kroah-Hartman
parent badef81922
commit 885e97478b
1 changed files with 4 additions and 3 deletions
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7
drivers/usb/core/devio.c
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@ -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 */