linux/drivers/usb
Daniel Mack 73926db33b usb: musb: do not sleep in atomic context
musb_port_reset() is called from musb_hub_control() which in turn holds
a spinlock, so musb_port_reset() is not allowed to call msleep().

With the asynchronous work helpers in place, this is fortunately easy to
fix by rescheduling the reset deassertion function to after the time
when the wait period is finished.

Note, however, that the MUSB_POWER_RESUME bit is only set on AM33xx
processors under rare conditions such as when to another driver
reporting an error during suspend. Hence, this didn't hit me yet in
normal operation.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-18 12:08:15 -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: udc: using MultO at TD as real mult value for ISO-TX 2014-01-13 15:55:19 -08:00
class usb: cdc-wdm: resp_count can be 0 even if WDM_READ is set 2014-01-12 20:13:28 -08:00
core usb: core: Fix potential memory leak adding dyn USBdevice IDs 2014-02-05 11:39:30 -08:00
dwc2 usb: dwc2: fix memory corruption in dwc2 driver 2014-02-04 12:59:14 -08:00
dwc3 Merge 3.13-rc5 into usb-next 2013-12-24 10:18:03 -08:00
early USB: ehci-dbgp: drop dead code. 2013-09-26 16:25:21 -07:00
gadget ARM: SoC cleanups for 3.14 2014-01-23 18:36:55 -08:00
host USB: EHCI: add delay during suspend to prevent erroneous wakeups 2014-02-18 12:04:41 -08:00
image USB: image: correct spelling mistake in comment 2014-01-08 15:08:14 -08:00
misc usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
mon
musb usb: musb: do not sleep in atomic context 2014-02-18 12:08:15 -08:00
phy usb: phy: move some error messages to debug 2014-02-04 12:59:14 -08:00
renesas_usbhs usb: changes for v3.14 merge window 2014-01-03 12:15:10 -08:00
serial USB: serial: option: blacklist interface 4 for Cinterion PHS8 and PXS8 2014-02-18 12:04:41 -08:00
storage usb-storage: enable multi-LUN scanning when needed 2014-02-04 12:59:15 -08:00
wusbcore usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
Kconfig USB patches for 3.14-rc1 2014-01-20 16:13:02 -08:00
Makefile Move DWC2 driver out of staging 2014-01-13 14:44:01 -08:00
README
usb-common.c
usb-skeleton.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -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.