linux/drivers/usb/core
Alan Stern 151b612847 USB: EHCI: fix crash during suspend on ASUS computers
This patch (as1545) fixes a problem affecting several ASUS computers:
The machine crashes or corrupts memory when going into suspend if the
ehci-hcd driver is bound to any controllers.  Users have been forced
to unbind or unload ehci-hcd before putting their systems to sleep.

After extensive testing, it was determined that the machines don't
like going into suspend when any EHCI controllers are in the PCI D3
power state.  Presumably this is a firmware bug, but there's nothing
we can do about it except to avoid putting the controllers in D3
during system sleep.

The patch adds a new flag to indicate whether the problem is present,
and avoids changing the controller's power state if the flag is set.
Runtime suspend is unaffected; this matters only for system suspend.
However as a side effect, the controller will not respond to remote
wakeup requests while the system is asleep.  Hence USB wakeup is not
functional -- but of course, this is already true in the current state
of affairs.

This fixes Bugzilla .

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Steven Rostedt <rostedt@goodmis.org>
Tested-by: Andrey Rahmatullin <wrar@wrar.name>
Tested-by: Oleksij Rempel (fishor) <bug-track@fisher-privat.net>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-04-24 13:55:43 -07:00
..
buffer.c USB: Core: Fix minor coding style issues 2011-01-22 19:35:39 -08:00
config.c usbcore: get BOS descriptor set 2011-09-26 15:51:08 -07:00
devices.c USB: use usb_endpoint_maxp() instead of le16_to_cpu() 2011-08-23 09:47:40 -07:00
devio.c module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
driver.c USB: don't ignore suspend errors for root hubs 2012-04-09 15:36:21 -07:00
endpoint.c USB: use usb_endpoint_maxp() instead of le16_to_cpu() 2011-08-23 09:47:40 -07:00
file.c switch device_get_devnode() and ->devnode() to umode_t * 2012-01-03 22:54:55 -05:00
generic.c USB: accept RNDIS configs if there's no alternative 2010-08-10 14:35:43 -07:00
hcd-pci.c USB: EHCI: fix crash during suspend on ASUS computers 2012-04-24 13:55:43 -07:00
hcd.c USB: fix race between root-hub suspend and remote wakeup 2012-04-09 15:43:21 -07:00
hub.c USB: fix deadlock in bConfigurationValue attribute method 2012-04-17 15:54:57 -07:00
inode.c simple_open: automatically convert to simple_open() 2012-04-05 15:25:50 -07:00
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: fix deadlock in bConfigurationValue attribute method 2012-04-17 15:54:57 -07:00
notify.c usb: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:25 -04:00
otg_whitelist.h
quirks.c USB: add quirk for another camera 2012-01-03 16:48:56 -08:00
sysfs.c usb: Add support for indicating whether a port is removable 2012-02-09 08:40:11 -08:00
urb.c USB documentation: explain lifetime rules for unlinking URBs 2012-04-06 13:54:00 -07:00
usb.c USB: cleanup the handling of the PM complete call 2012-01-24 14:23:49 -08:00
usb.h USB: cleanup the handling of the PM complete call 2012-01-24 14:23:49 -08:00