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authorAlan Stern <stern@rowland.harvard.edu>2007-12-03 15:42:10 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2008-02-01 14:34:53 -0800
commit885e97478bf95b46a7cff40df49c2bb1a5503afd (patch)
treeddb8bc5e8a7ace8971cf4a472bb9b3a100db7c73
parentbadef819229d455493ba97253dd0e4097b995624 (diff)
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>
-rw-r--r--drivers/usb/core/devio.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 1f4f6d02fe2..85ec65ada12 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -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 */