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| /linux/drivers/usb/serial/ |
| H A D | cp210x.c | diff cf00ead0bde8e47ccd3aa8a4e51cfa59bbf5e055 Mon Jan 25 14:48:16 CET 2021 Johan Hovold <johan@kernel.org> USB: serial: cp210x: fix RTS handling
Clearing TIOCM_RTS should always deassert RTS and setting the same bit
should enable auto-RTS if hardware flow control is enabled.
This allows user space to throttle input directly at the source also
when hardware-assisted flow control is enabled and makes dtr_rts()
always deassert both lines during close (when HUPCL is set).
Signed-off-by: Johan Hovold <johan@kernel.org>
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