USB: serial: ch341: fix initial modem-control state
authorJohan Hovold <johan@kernel.org>
Fri, 6 Jan 2017 18:15:10 +0000 (19:15 +0100)
committerBen Hutchings <ben@decadent.org.uk>
Thu, 16 Mar 2017 02:18:41 +0000 (02:18 +0000)
commit2acf17afd05e9e18af3de985ed2e24ba64e167e7
treeb88b4660843fbca60eb3fbb758e636e62f3f4f0a
parentc3883b5fe94cefa2585c9b484707e7d2415f5f7e
USB: serial: ch341: fix initial modem-control state

commit 4e2da44691cffbfffb1535f478d19bc2dca3e62b upstream.

DTR and RTS will be asserted by the tty-layer when the port is opened
and deasserted on close (if HUPCL is set). Make sure the initial state
is not-asserted before the port is first opened as well.

Fixes: 664d5df92e88 ("USB: usb-serial ch341: support for DTR/RTS/CTS")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
drivers/usb/serial/ch341.c