Johan Hovold 10a00e38f3 USB: cdc-acm: fix device unregistration ... commit cb25505fc6 upstream. Unregister tty device in disconnect as is required by the USB stack. By deferring unregistration to when the last tty reference is dropped, the parent interface device can get unregistered before the child resulting in broken hotplug events being generated when the tty is finally closed: KERNEL[2290.798128] remove /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:3.1 (usb) KERNEL[2290.804589] remove /devices/pci0000:00/0000:00:1d.7/usb2/2-1 (usb) KERNEL[2294.554799] remove /2-1:3.1/tty/ttyACM0 (tty) The driver must deal with tty callbacks after disconnect by checking the disconnected flag. Specifically, further opens must be prevented and this is already implemented. Acked-by: Oliver Neukum <oneukum@suse.de> Cc: Oliver Neukum <oneukum@suse.de> Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-03-28 12:12:26 -07:00
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cdc-acm.c	USB: cdc-acm: fix device unregistration	2013-03-28 12:12:26 -07:00
cdc-acm.h	USB: cdc-acm: Fix potential deadlock (lockdep warning)	2011-12-09 16:18:18 -08:00
cdc-wdm.c	USB: cdc-wdm: fix buffer overflow	2013-03-20 13:04:58 -07:00
Kconfig	USB: add USB test and measurement class driver	2008-10-17 14:40:51 -07:00
Makefile	USB: add USB test and measurement class driver	2008-10-17 14:40:51 -07:00
usblp.c	Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2012-01-08 12:19:57 -08:00
usbtmc.c	USB: convert drivers/usb/* to use module_usb_driver()	2011-11-18 09:34:02 -08:00