linux/drivers/usb
Johan Hovold 2a8cdfde92 USB: cdc-acm: add quirk for control-line state requests
Add new quirk for devices that cannot handle control-line state
requests.

Note that we currently send these requests to all devices, regardless of
whether they claim to support it, but that errors are only logged if
support is claimed.

Since commit 0943d8ead3 ("USB: cdc-acm: use tty-port dtr_rts"), which
only changed the timings for these requests slightly, this has been
reported to cause occasional firmware crashes on Simtec Electronics
Entropy Key devices after re-enumeration. Enable the quirk for this
device.

Reported-by: Nix <nix@esperi.org.uk>
Tested-by: Nix <nix@esperi.org.uk>
Cc: stable <stable@vger.kernel.org>	# v3.16
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-06 12:25:40 -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: Fix oops when removing the ci_hdrc module 2014-10-27 10:01:05 +08:00
class USB: cdc-acm: add quirk for control-line state requests 2014-11-06 12:25:40 -08:00
common usb: Add LED triggers for USB activity 2014-09-25 17:05:12 +02:00
core usb: core: notify disconnection when core detects disconnect 2014-11-03 19:29:55 -08:00
dwc2 usb: dwc2: gadget: fix enumeration issues 2014-10-28 10:40:58 -05:00
dwc3 usb: dwc3: gadget: Properly initialize LINK TRB 2014-10-23 13:57:24 -05:00
early USB: ehci-dbgp: drop dead code. 2013-09-26 16:25:21 -07:00
gadget usb: gadget: function: Fixed the return value on error path 2014-10-23 14:49:35 -05:00
host xhci: no switching back on non-ULT Haswell 2014-11-03 15:48:45 -08:00
image USB: image: correct spelling mistake in comment 2014-01-08 15:08:14 -08:00
misc usb: rename phy to usb_phy in HCD 2014-09-29 11:52:59 -04:00
mon
musb usb: musb: musb_dsps: fix NULL pointer in suspend 2014-10-23 09:55:43 -05:00
phy USB: Remove .owner field for driver 2014-09-28 21:55:10 -04:00
renesas_usbhs usb: gadget: Refactor request completion 2014-09-25 16:58:50 +02:00
serial USB: opticon: fix non-atomic allocation in write path 2014-11-03 09:07:30 +01:00
storage USB: storage: Fix timeout in usb_stor_euscsi_init() and usb_stor_huawei_e220_init() 2014-11-05 11:45:58 -08:00
usbip usbip: remove struct usb_device_id table 2014-08-25 10:40:58 -07:00
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.