linux/drivers/usb/wusbcore
Thomas Pugliese f4042c068a usb: wusbcore: send keepalives to unauthenticated devices
This patch modifies the WUSB device disconnect timer code to send
keepalives to all connected devices even if they are not authenticated.
This fixes a problem where unauthenticated devices that lose their
connection before they are authenticated will stay in the device tree
forever.  More importantly, devices in this situation will never
relinquish their port on the root hub so eventually all root ports will
be taken up and no other devices can connect.

A comment in the existing code states that there are some devices that
may not respond to keepalives if they have not been authenticated.  That
comment is about 5 years old and I don't know of any WUSB devices that
act that way.  Either way, any buggy devices that may still be around
will continue to work as long as they can transition to the
authenticated state within the WUSB LOA timeout of 4s, which is not
unreasonable to expect.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-02 15:21:03 -08:00
..
cbaf.c USB: wusbcore: fix usb_dev leaks 2013-10-19 14:23:15 -07:00
crypto.c Fix common misspellings 2011-03-31 11:26:23 -03:00
dev-sysfs.c uwb: use dev_dbg() for debug messages 2008-12-22 18:22:50 +00:00
devconnect.c usb: wusbcore: send keepalives to unauthenticated devices 2013-12-02 15:21:03 -08:00
Kconfig USB: regroup all depends on USB within an if USB block 2013-04-09 16:49:07 -07:00
Makefile usb: makefile cleanup 2010-10-22 10:22:07 -07:00
mmc.c USB: HWA: fix device probe failure 2013-06-24 16:20:43 -07:00
pal.c USB: HWA: fix device probe failure 2013-06-24 16:20:43 -07:00
reservation.c USB: HWA: fix device probe failure 2013-06-24 16:20:43 -07:00
rh.c wusbcore: fix root hub hub_status_data to only return > 0 if status has actually changed 2013-08-12 13:13:32 -07:00
security.c wusb: Fix potential memory leak in wusb_dev_sec_add() 2012-08-10 12:06:38 -07:00
wa-hc.c usb: wusbcore: add a quirk for Alereon HWA device isoc behavior 2013-10-29 16:44:49 -07:00
wa-hc.h usb: wusbcore: add a quirk for Alereon HWA device isoc behavior 2013-10-29 16:44:49 -07:00
wa-nep.c wusbcore wire adapter: ignore HWA_NOTIF_BPST_ADJ notifications 2013-06-06 13:11:14 -07:00
wa-rpipe.c usb: wusbcore: set the RPIPE wMaxPacketSize value correctly 2013-10-29 16:44:49 -07:00
wa-xfer.c usb: wusbcore: change WA_SEGS_MAX to a legal value 2013-10-29 16:44:49 -07:00
wusbhc.c USB: HWA: fix device probe failure 2013-06-24 16:20:43 -07:00
wusbhc.h wusbcore: add sysfs attribute for retry count 2013-06-24 16:19:02 -07:00