OpenCloudOS-Kernel/drivers/usb
Johan Hovold c9fac85345 USB: mos7840: remove smp barriers from icount handling
Remove SMP memory barriers from icount handling and rely on the barriers
implied by wait_event, sleep and locks, while using the port lock to
guarantee atomicity.

This is a step in moving over to the generic icount implementations.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-25 13:52:24 -07:00
..
atm Merge branch 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq 2012-10-02 09:54:49 -07:00
c67x00 usb: c67x00 RetryCnt value in c67x00 TD should be 3 2013-03-07 12:31:37 +08:00
chipidea Merge branch 'usb-linus' into usb-next 2013-03-20 16:21:47 -07:00
class USB: cdc-wdm: implement IOCTL_WDM_MAX_COMMAND 2013-03-25 13:32:20 -07:00
core USB: fix urb-poison imbalance 2013-03-25 13:48:27 -07:00
dwc3 usb: dwc3: ep0: fix sparc64 build 2013-03-08 09:42:50 +02:00
early fix build of EHCI debug port code when USB_CHIPIDEA but !USB_EHCI_HCD 2012-11-02 10:13:33 -07:00
gadget usb: fixes for v3.9-rc4 2013-03-21 08:40:22 -07:00
host USB: EHCI: remove unused variable in unlink_empty_async() 2013-03-25 13:36:32 -07:00
image
misc usb: misc: sisusbvga: Avoid NULL pointer dereference from sisusb 2013-03-15 11:51:01 -07:00
mon mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
musb usb: fixes for v3.9-rc4 2013-03-21 08:40:22 -07:00
otg Merge branch 'usb-linus' into usb-next 2013-03-20 16:21:47 -07:00
phy Merge branch 'usb-linus' into usb-next 2013-03-20 16:21:47 -07:00
renesas_usbhs USB patches for 3.9-rc1 2013-02-21 12:20:00 -08:00
serial USB: mos7840: remove smp barriers from icount handling 2013-03-25 13:52:24 -07:00
storage Merge branch 'usb-linus' into usb-next 2013-03-20 16:21:47 -07:00
wusbcore USB: wusbcore/wa-xfer: error handling fixes in setup_segs() 2013-02-06 11:38:14 -08:00
Kconfig USB: select USB_ARCH_HAS_EHCI for MXS 2013-01-11 16:01:06 -08:00
Makefile usb: Makefile: fix drivers/usb/phy/ Makefile entry 2013-03-07 12:29:09 +08:00
README
usb-common.c
usb-skeleton.c USB: usb-skeleton.c: fix blocked forever in skel_read 2013-03-25 13:32:20 -07:00

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 ("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.