USB: cdc-acm: fix shutdown and suspend race
authorJohan Hovold <jhovold@gmail.com>
Mon, 26 May 2014 17:23:40 +0000 (19:23 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 27 May 2014 22:04:09 +0000 (15:04 -0700)
commited797074031a37bb9bf4a70952fffc606b77274d
treef323ed49de53a520cd020827aef67b59dc1ccbaf
parentbae3f4c53585e9a170da9436e0f06919874bda9a
USB: cdc-acm: fix shutdown and suspend race

We should stop I/O unconditionally at suspend rather than rely on the
tty-port initialised flag (which is set prior to stopping I/O during
shutdown) in order to prevent suspend returning with URBs still active.

Fixes: 11ea859d64b6 ("USB: additional power savings for cdc-acm devices
that support remote wakeup")

Cc: <stable@vger.kernel.org> # v2.6.27
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/class/cdc-acm.c