forked from luck/tmp_suning_uos_patched
USB: fix interaction between different interfaces in an "Option" usb device
Just the serial port in the first interface should control DTR and RTS lines. This way, the closing of the rest of the ports does not produce a= hangup in the communication. Signed-off-by: Miguel Angel Alvarez <ma.alvarez@ziv.es> Signed-off-by: Matthias Urlichs <matthias@urlichs.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -625,6 +625,9 @@ static int option_send_setup(struct usb_serial_port *port)
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dbg("%s", __FUNCTION__);
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if (port->number != 0)
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return 0;
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portdata = usb_get_serial_port_data(port);
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if (port->tty) {
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