linux/drivers/usb
Alan Stern 501950d846 USB: fix char-device disconnect handling
This patch (as1198) fixes a conceptual bug: Somewhere along the line
we managed to confuse USB class devices with USB char devices.  As a
result, the code to send a disconnect signal to userspace would not be
built if both CONFIG_USB_DEVICE_CLASS and CONFIG_USB_DEVICEFS were
disabled.

The usb_fs_classdev_common_remove() routine has been renamed to
usbdev_remove() and it is now called whenever any USB device is
removed, not just when a class device is unregistered.  The notifier
registration and unregistration calls are no longer conditionally
compiled.  And since the common removal code will always be called as
part of the char device interface, there's no need to call it again as
part of the usbfs interface; thus the invocation of
usb_fs_classdev_common_remove() has been taken out of
usbfs_remove_device().

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Alon Bar-Lev <alon.barlev@gmail.com>
Tested-by: Alon Bar-Lev <alon.barlev@gmail.com>
Cc: stable <stable@kernel.org>
2009-01-27 16:15:32 -08:00
..
atm net: convert more to %pM 2008-10-27 17:47:26 -07:00
c67x00 usb/c67x00 endianness annotations 2008-06-04 08:06:01 -07:00
class USB: Enhance usage of pm_message_t 2009-01-07 10:00:03 -08:00
core USB: fix char-device disconnect handling 2009-01-27 16:15:32 -08:00
gadget Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-01-08 11:05:59 -08:00
host USB: Fix suspend-resume of PCI USB controllers 2009-01-27 16:15:32 -08:00
image USB: change interface to usb_lock_device_for_reset() 2009-01-07 09:59:52 -08:00
misc USB: emi26: fix oops on load 2009-01-07 10:00:13 -08:00
mon USB: Allow usbmon as a module even if usbcore is builtin 2009-01-07 09:59:54 -08:00
musb USB: musb: Kill some compiling warning in musb Blackfin part 2009-01-07 10:00:08 -08:00
otg USB: otg: twl4030 transceiver driver 2009-01-07 10:00:11 -08:00
serial USB: cp2101: add fasttrax GPS evaluation kit vendor/product ID 2009-01-27 16:15:31 -08:00
storage USB: storage: add unusual devs entry 2009-01-27 16:15:32 -08:00
wusbcore USB: wusb: annotate association types withe proper endianness 2009-01-07 09:59:51 -08:00
Kconfig USB: move isp1301_omap to drivers/usb/otg 2009-01-07 10:00:02 -08:00
Makefile wusb: add HWA host controller driver 2008-09-17 16:54:31 +01:00
README USB: fix directory references in usb/README 2007-11-28 13:58:34 -08:00
usb-skeleton.c USB: remove unnecessary type casting of urb->context 2008-04-24 21:16:55 -07:00

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.