linux/drivers/usb/class
Dan Williams ba2d8ce9db cdc-acm: implement TIOCSSERIAL to avoid blocking close(2)
Some devices (ex Nokia C7) simply don't respond at all when data is sent
to some of their USB interfaces.  The data gets stuck in the TTYs queue
and sits there until close(2), which them blocks because closing_wait
defaults to 30 seconds (even though the fd is O_NONBLOCK).  This is
rarely desired.  Implement the standard mechanism to adjust closing_wait
and let applications handle it how they want to.

See also 02303f7337 for usb_wwan.c.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Cc: stable <stable@vger.kernel.org>
Acked-by: Oliver Neukum <oneukum@suse.de>
Tested-by: Aleksander Morgado <aleksander@gnu.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-15 17:39:03 -08:00
..
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
cdc-acm.c cdc-acm: implement TIOCSSERIAL to avoid blocking close(2) 2012-11-15 17:39:03 -08:00
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 wdm_find_device* return value 2012-09-10 15:33:00 -07:00
usblp.c USB: usblp.c: remove dbg() usage 2012-05-01 21:33:31 -07:00
usbtmc.c USB: convert drivers/usb/* to use module_usb_driver() 2011-11-18 09:34:02 -08:00