USB: Driver for CH341 USB-serial adaptor

This patch implements a USB serial port driver for the Winchiphead
CH341 USB-RS232 Converter. This chip also implements an IEEE 1284
parallel port, I2C and SPI, but that is not supported by the driver.

Signed-off-by: Frank A Kingswood <frank@kingswood-consulting.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>


diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
index 43d6db6..99fefed 100644
--- a/drivers/usb/serial/Kconfig
+++ b/drivers/usb/serial/Kconfig
@@ -92,6 +92,16 @@
 	  To compile this driver as a module, choose M here: the
 	  module will be called belkin_sa.
 
+config USB_SERIAL_CH341
+	tristate "USB Winchiphead CH341 Single Port Serial Driver"
+	depends on USB_SERIAL
+	help
+	  Say Y here if you want to use a Winchiphead CH341 single port
+	  USB to serial adapter.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ch341.
+
 config USB_SERIAL_WHITEHEAT
 	tristate "USB ConnectTech WhiteHEAT Serial Driver"
 	depends on USB_SERIAL