tmp_suning_uos_patched/drivers/usb
Sarah Sharp 06df572909 USB: xhci: Fix command completion after a drop endpoint.
The xHCI driver issues a Configure Endpoint command for two reasons:
 - a new configuration or alternate interface setting is selected
 - a quirky Fresco Logic prototype requires the command after a Reset
   Endpoint command.
The xHCI driver only waits on the command in the first case.

When a configure endpoint command completes, the driver needs to know why
the command was generated.  When the driver only supported selecting an
initial configuration, the check was simple.  Unfortunately that check
doesn't work now that the driver supports alternate interfaces.  If an
endpoint must be dropped (because it's not in the new alternate setting)
and no new endpoints are added, the math involving
xhci_last_valid_endpoint() will assign -1 to an unsigned integer and cause
an out-of-bounds array access.

Move the check for the quirky hardware sooner and avoid the bad array
access.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-11 11:55:27 -08:00
..
atm tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
c67x00 usb/c67x00 endianness annotations 2008-06-04 08:06:01 -07:00
class USB: usbtmc: Use usb_clear_halt() instead of custom code. 2009-12-11 11:55:27 -08:00
core USB: add remove_id sysfs attr for usb drivers 2009-12-11 11:55:26 -08:00
early USB: ehci-dbgp: errata for EHCI debug/host controller synchronization 2009-09-23 06:46:38 -07:00
gadget USB: g_multi kconfig: fix depends and help text 2009-12-11 11:55:26 -08:00
host USB: xhci: Fix command completion after a drop endpoint. 2009-12-11 11:55:27 -08:00
image USB: remove unneeded printks from microtek driver 2009-09-23 06:46:34 -07:00
misc usbtest: make module param pattern writeable 2009-12-11 11:55:22 -08:00
mon USB: add scatter-gather support to usbmon 2009-12-11 11:55:20 -08:00
musb USB: musb_gadget: remove pointless loop 2009-12-11 11:55:25 -08:00
otg USB: twl4030: Enable USB regulators before enabling USB charging 2009-12-11 11:55:25 -08:00
serial USB: option: add pid for ZTE 2009-12-11 11:55:26 -08:00
storage USB: usb-storage: fix bug in fill_inquiry 2009-12-11 11:55:26 -08:00
wusbcore USB: wusb: correctly check size of security descriptor. 2009-12-11 11:55:26 -08:00
Kconfig USB: ehci: Allow EHCI to be built on OMAP3 2009-12-11 11:55:20 -08:00
Makefile USB OTG: Add generic driver for ULPI OTG transceiver 2009-12-11 11:55:16 -08:00
README USB: fix directory references in usb/README 2007-11-28 13:58:34 -08:00
usb-skeleton.c USB: skeleton: Correct use of ! and & 2009-12-11 11:55:14 -08:00

To understand all the Linux-USB framework, you'll use these resources:

    * This source code.  This is necessarily an evolving work, and
      includes kerneldoc that should help you get a current overview.
      ("make pdfdocs", and then look at "usb.pdf" for host side and
      "gadget.pdf" for peripheral side.)  Also, Documentation/usb has
      more information.

    * The USB 2.0 specification (from www.usb.org), with supplements
      such as those for USB OTG and the various device classes.
      The USB specification has a good overview chapter, and USB
      peripherals conform to the widely known "Chapter 9".

    * Chip specifications for USB controllers.  Examples include
      host controllers (on PCs, servers, and more); peripheral
      controllers (in devices with Linux firmware, like printers or
      cell phones); and hard-wired peripherals like Ethernet adapters.

    * Specifications for other protocols implemented by USB peripheral
      functions.  Some are vendor-specific; others are vendor-neutral
      but just standardized outside of the www.usb.org team.

Here is a list of what each subdirectory here is, and what is contained in
them.

core/		- This is for the core USB host code, including the
		  usbfs files and the hub class driver ("khubd").

host/		- This is for USB host controller drivers.  This
		  includes UHCI, OHCI, EHCI, and others that might
		  be used with more specialized "embedded" systems.

gadget/		- This is for USB peripheral controller drivers and
		  the various gadget drivers which talk to them.


Individual USB driver directories.  A new driver should be added to the
first subdirectory in the list below that it fits into.

image/		- This is for still image drivers, like scanners or
		  digital cameras.
../input/	- This is for any driver that uses the input subsystem,
		  like keyboard, mice, touchscreens, tablets, etc.
../media/	- This is for multimedia drivers, like video cameras,
		  radios, and any other drivers that talk to the v4l
		  subsystem.
../net/		- This is for network drivers.
serial/		- This is for USB to serial drivers.
storage/	- This is for USB mass-storage drivers.
class/		- This is for all USB device drivers that do not fit
		  into any of the above categories, and work for a range
		  of USB Class specified devices. 
misc/		- This is for all USB device drivers that do not fit
		  into any of the above categories.