linux/drivers/usb
Thadeu Lima de Souza Cascardo f4fa446883 usb_serial: Fix oops when unexisting usb serial device is opened.
This commit 335f8514f2 has stopped
properly checking if there is any usb serial associated with the tty in
the close function. It happens the close function is called by releasing
the terminal right after opening the device fails.

As an example, open fails with a non-existing device, when probe has
never been called, because the device has never been plugged. This is
common in systems with static modules and no udev.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-25 11:24:26 -07:00
..
atm firmware: atm/ueagle-atm: prepare for FIRMWARE_NAME_MAX removal 2009-06-15 21:30:24 -07:00
c67x00 usb/c67x00 endianness annotations 2008-06-04 08:06:01 -07:00
class acm: Fix oops when closing ACM tty device right after open has failed. 2009-06-25 11:24:26 -07:00
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2009-06-16 13:06:10 -07:00
gadget Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2009-06-16 13:06:10 -07:00
host Merge commit 'origin/master' into next 2009-06-18 11:16:55 +10:00
image USB: replace uses of __constant_{endian} 2009-03-24 16:20:33 -07:00
misc Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2009-06-16 13:06:10 -07:00
mon USB: usbmon: use the new usb debugfs directory 2009-06-15 21:44:43 -07:00
musb usb: musb: disable OTG AUTOIDLE only with omap3430 2009-06-15 21:44:46 -07:00
otg USB: Add Intel Langwell USB OTG Transceiver Drive 2009-06-15 21:44:47 -07:00
serial usb_serial: Fix oops when unexisting usb serial device is opened. 2009-06-25 11:24:26 -07:00
storage USB: usb-storage: add filter to "option_ms" to leave unrecognized devices alone 2009-06-15 21:44:46 -07:00
wusbcore WUSB: correct format of wusb_chid sysfs file 2009-04-17 10:50:29 -07:00
Kconfig usb: return device strings in UTF-8 2009-06-15 21:44:43 -07:00
Makefile USB: xhci: Add Makefile, MAINTAINERS, and Kconfig entries. 2009-06-15 21:44:51 -07:00
README USB: fix directory references in usb/README 2007-11-28 13:58:34 -08:00
usb-skeleton.c USB: skeleton: Use dev_info instead of info 2009-03-24 16:20:30 -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.