Commit de9c7e9f authored by Johan Hovold's avatar Johan Hovold
Browse files

USB: serial: cp210x: add support for TIOCGICOUNT 

Enable TIOCGICOUNT to allow reading out the (unused) interrupt counters
and error statistics.

Note that modem-status events are currently left unimplemented as they
appear to be buffered on at least CP2102 and therefore cannot be used to
implement TIOCMIWAIT.

Link: https://lore.kernel.org/r/20200713105517.27796-4-johan@kernel.org


Reviewed-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
parent a7207e98

drivers/usb/serial/cp210x.c

+1 −0
Original line number Diff line number Diff line
@@ -291,6 +291,7 @@ static struct usb_serial_driver cp210x_device = { 
	.unthrottle		= usb_serial_generic_unthrottle,

	.tiocmget		= cp210x_tiocmget,

	.tiocmset		= cp210x_tiocmset,

	.get_icount		= usb_serial_generic_get_icount,

	.attach			= cp210x_attach,

	.disconnect		= cp210x_disconnect,

	.release		= cp210x_release,

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