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Staging: quatech_usb2: remove unused qt2_box_flush function
In today linux-next I got a compilation warning: drivers/staging/quatech_usb2/quatech_usb2.c:1852: warning: ‘qt2_box_flush’ defined but not used Signed-off-by: Javier Martinez Canillas <martinez.javier@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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1 changed files with 1 additions and 23 deletions
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@ -258,8 +258,6 @@ static int qt2_box_get_register(struct usb_serial *serial,
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static int qt2_box_set_register(struct usb_serial *serial,
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unsigned short Uart_Number, unsigned short Register_Num,
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unsigned short Value);
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static int qt2_box_flush(struct usb_serial *serial, unsigned char uart_number,
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unsigned short rcv_or_xmit);
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static int qt2_boxsetuart(struct usb_serial *serial, unsigned short Uart_Number,
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unsigned short default_divisor, unsigned char default_LCR);
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static int qt2_boxsethw_flowctl(struct usb_serial *serial,
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@ -645,9 +643,6 @@ static void qt2_close(struct usb_serial_port *port)
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/* get the device private data */
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port_extra = qt2_get_port_private(port); /* port private data */
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/* we don't need to force flush though the hardware, so we skip using
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* qt2_box_flush() here */
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/* we can now (and only now) stop reading data */
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port_extra->close_pending = true;
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dbg("%s(): port_extra->close_pending = true", __func__);
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@ -1841,24 +1836,6 @@ static int qt2_box_set_register(struct usb_serial *serial,
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return result;
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}
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/** @brief Request the Tx or Rx buffers on the USB side be flushed
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*
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* Tx flush: When all the currently buffered data has been sent, send an escape
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* sequence back up the data stream to us
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* Rx flush: add a flag in the data stream now so we know when it's made it's
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* way up to us.
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*/
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static int qt2_box_flush(struct usb_serial *serial, unsigned char uart_number,
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unsigned short rcv_or_xmit)
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{
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int result;
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result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
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QT2_FLUSH_DEVICE, 0x40, rcv_or_xmit, uart_number, NULL, 0,
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300);
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return result;
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}
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/** qt2_boxsetuart - Issue a SET_UART vendor-spcific request on the default
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* control pipe. If successful sets baud rate divisor and LCR value.
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*/
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@ -1873,6 +1850,7 @@ static int qt2_boxsetuart(struct usb_serial *serial, unsigned short Uart_Number,
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QT2_GET_SET_UART, 0x40, default_divisor, UartNumandLCR,
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NULL, 0, 300);
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}
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/** qt2_boxsethw_flowctl - Turn hardware (RTS/CTS) flow control on and off for
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* a hardware UART.
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*/
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