kernel_optimize_test/drivers/usb/core
Alan Stern bf3d7d40e4 USB: fix race between root-hub resume and wakeup requests
The USB core keeps track of pending resume requests for root hubs, in
order to resolve races between wakeup requests and suspends.  However
the code that does this is subject to another race (between wakeup
requests and resumes) because the WAKEUP_PENDING flag is cleared
before the resume occurs, leaving a window in which another wakeup
request might arrive.

This patch (as1447) fixes the problem by clearing the WAKEUP_PENDING
flag after the resume instead of before it.

This fixes Bugzilla #24952.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Paul Bender <pebender@san.rr.com>
Tested-by: warpme <warpme@o2.pl>
Cc: stable <stable@kernel.org> [.36+]
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-03 16:46:48 -08:00
..
buffer.c USB: make hcd.h public (drivers dependency) 2010-05-20 13:21:30 -07:00
config.c USB: remove the usb_host_ss_ep_comp structure 2010-05-20 13:21:40 -07:00
devices.c BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
devio.c BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
driver.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 2011-01-10 08:14:53 -08:00
endpoint.c usb: set ep_dev async suspend should be later than device_initialize 2011-01-22 18:36:42 -08:00
file.c BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
generic.c USB: accept RNDIS configs if there's no alternative 2010-08-10 14:35:43 -07:00
hcd-pci.c xHCI: synchronize irq in xhci_suspend() 2011-01-14 15:28:52 -08:00
hcd.c USB: fix race between root-hub resume and wakeup requests 2011-02-03 16:46:48 -08:00
hub.c USB: prevent buggy hubs from crashing the USB stack 2011-02-03 16:46:06 -08:00
inode.c fs: dcache remove dcache_lock 2011-01-07 17:50:23 +11:00
Kconfig kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT 2011-01-20 17:02:05 -08:00
Makefile usb: makefile cleanup 2010-10-22 10:22:07 -07:00
message.c USB: make usb_mark_last_busy use pm_runtime_mark_last_busy 2010-11-16 14:02:54 -08:00
notify.c
otg_whitelist.h
quirks.c USB: improve uses of usb_mark_last_busy 2010-11-16 14:04:22 -08:00
sysfs.c USB: use the runtime-PM autosuspend implementation 2010-11-16 14:03:41 -08:00
urb.c USB: output an error message when the pipe type doesn't match the endpoint type 2010-10-22 10:21:27 -07:00
usb.c USB: use the runtime-PM autosuspend implementation 2010-11-16 14:03:41 -08:00
usb.h USB: use the runtime-PM autosuspend implementation 2010-11-16 14:03:41 -08:00