kernel_optimize_test/drivers/usb
Julia Lawall 058e698b63 USB: gadget: Drop NULL test on list_entry result
list_entry, which is an alias for container_of, cannot return NULL, as
there is no way to add a NULL value to a doubly linked list.

A simplified version of the semantic match that findds this problem is as
follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@r@
expression x,E;
statement S1,S2;
position p,p1;
@@

*x = list_entry@p(...)
... when != x = E
*if@p1 (x == NULL) S1 else S2
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-23 06:46:28 -07:00
..
atm firmware: atm/ueagle-atm: prepare for FIRMWARE_NAME_MAX removal 2009-06-15 21:30:24 -07:00
c67x00
class USB: suspend/resume support for usbtmc 2009-09-23 06:46:28 -07:00
core USB: make the "usbfs_snoop" log more pertinent 2009-09-23 06:46:23 -07:00
gadget USB: gadget: Drop NULL test on list_entry result 2009-09-23 06:46:28 -07:00
host USB: whci-hcd: make endpoint_reset method async 2009-09-23 06:46:21 -07:00
image USB: replace uses of __constant_{endian} 2009-03-24 16:20:33 -07:00
misc USB: ldusb should signal an error in poll if the device is disconnected 2009-09-23 06:46:28 -07:00
mon USB: usbmon: end ugly tricks with DMA peeking 2009-09-23 06:46:19 -07:00
musb Merge branch 'master' into sh/hwblk 2009-08-15 13:00:02 +09:00
otg USB: otg: fix module reinsert issue 2009-07-12 15:16:41 -07:00
serial USB: usb-serial, remove unused variables 2009-09-23 06:46:26 -07:00
storage USB: storage: fix a resume path GFP_NOIO must be used 2009-09-23 06:46:15 -07:00
wusbcore trivial: fix typos "man[ae]g?ment" -> "management" 2009-09-21 15:14:56 +02:00
Kconfig USB: Add nuvoton Ehci driver for w90p910 platform 2009-09-23 06:46:20 -07:00
Makefile USB: xhci: Add Makefile, MAINTAINERS, and Kconfig entries. 2009-06-15 21:44:51 -07:00
README
usb-skeleton.c USB: skeleton: Use dev_info instead of info 2009-03-24 16:20:30 -07:00

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.