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USB: cdc-acm: only raise DTR on transitions from B0
authorJohan Hovold <johan@kernel.org>
Wed, 5 Nov 2014 17:41:59 +0000 (18:41 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 14 Nov 2014 16:47:58 +0000 (08:47 -0800)
commit2a18a875f45d56777394323e725ea8be378b068c
tree12044173b728fe8f932a2abc2e1e3d40ee732035tree | snapshot
parent1e2dedaa4d57a7aa681a542358dcbada0cf7d896commit | diff
USB: cdc-acm: only raise DTR on transitions from B0

commit 4473d054ceb572557954f9536731d39b20937b0c upstream.

Make sure to only raise DTR on transitions from B0 in set_termios.

Also allow set_termios to be called from open with a termios_old of
NULL. Note that DTR will not be raised prematurely in this case.

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/class/cdc-acm.c diff | blob | history
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