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| /linux/drivers/usb/serial/ |
| H A D | cp210x.c | diff 8cce3bbfb4cffce097c823c29ba487d5a7422d37 Mon Jan 25 14:48:12 CET 2021 Johan Hovold <johan@kernel.org> USB: serial: cp210x: fix modem-control handling
The vendor request used to set the flow-control settings also sets the
state of the modem-control lines.
Add state variables to keep track of the modem-control lines to avoid
always asserting the lines whenever the flow-control settings are
updated.
This specifically also avoids asserting DTR/RTS when opening a port with
the line speed set to B0.
Signed-off-by: Johan Hovold <johan@kernel.org>
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