linux/drivers/usb
Fabio Estevam d0f992498e usb: chipidea: core: Remove unneeded OOM message
MM core code already complains when devm_kzalloc() fails, so no need to print
the error locally.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 09:28:11 -08:00
..
atm usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
c67x00 USB: c67x00: correct spelling mistakes in comments 2014-01-08 15:05:14 -08:00
chipidea usb: chipidea: core: Remove unneeded OOM message 2014-11-26 09:28:11 -08:00
class USB: cdc-acm: check for valid interfaces 2014-11-24 17:21:42 -08:00
common usb: move the OTG state from the USB PHY to the OTG structure 2014-11-03 10:01:25 -06:00
core usb: patches for v3.19 merge window 2014-11-25 09:31:14 -08:00
dwc2 usb: patches for v3.19 merge window 2014-11-25 09:31:14 -08:00
dwc3 usb: dwc3: return error code from the most recent call 2014-11-24 08:38:27 -06:00
early USB: ehci-dbgp: drop dead code. 2013-09-26 16:25:21 -07:00
gadget usb: gadget: udc: pxa25x: remove unnecessary NULL check 2014-11-25 08:47:04 -06:00
host usb: patches for v3.19 merge window 2014-11-25 09:31:14 -08:00
image USB: image: correct spelling mistake in comment 2014-01-08 15:08:14 -08:00
misc USB-SIS: Deletion of an unnecessary check before the function call "usb_put_dev" 2014-11-24 17:24:31 -08:00
mon
musb usb: musb: Use IS_ENABLED for tusb6010 2014-11-25 08:47:07 -06:00
phy usb: phy: Handle per-PHY event for connnect and disconnect events 2014-11-25 08:47:05 -06:00
renesas_usbhs usb: renesas_usbhs: expand USB-DMAC channels for R-Car Gen2 2014-11-12 09:11:31 -06:00
serial USB: opticon: fix non-atomic allocation in write path 2014-11-03 09:07:30 +01:00
storage storage: Fix bus scan and multi-LUN support for SCM eUSCSI devices 2014-11-24 17:22:38 -08:00
usbip USB-IP: Deletion of unnecessary checks before the function call "usb_put_dev" 2014-11-24 17:23:41 -08:00
wusbcore usb: hub: rename khubd to hub_wq in documentation and comments 2014-09-23 22:33:19 -07:00
Kconfig usb: Add LED triggers for USB activity 2014-09-25 17:05:12 +02:00
Makefile usbip: move usbip kernel code out of staging 2014-08-25 10:40:06 -07:00
README usb: hub: rename khubd to hub_wq in documentation and comments 2014-09-23 22:33:19 -07:00
usb-skeleton.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00

README

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 ("hub_wq").

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.