--- /dev/null
+From 679315e5fae1e4614eed0d9aa26999ddcb6a0f77 Mon Sep 17 00:00:00 2001
+From: Anton Staaf <robotboy@chromium.org>
+Date: Mon, 3 Nov 2014 08:43:20 -0800
+Subject: USB: serial: add Google simple serial SubClass support
+
+From: Anton Staaf <robotboy@chromium.org>
+
+commit 679315e5fae1e4614eed0d9aa26999ddcb6a0f77 upstream.
+
+Add support for Google devices that export simple serial
+interfaces using the vendor specific SubClass/Protocol pair
+0x50/0x01.
+
+Signed-off-by: Anton Staaf <robotboy@chromium.org>
+Reviewed-by: Benson Leung <bleung@chromium.org>
+[johan: move id entries and update Kconfig]
+Signed-off-by: Johan Hovold <johan@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/usb/serial/Kconfig | 1 +
+ drivers/usb/serial/usb-serial-simple.c | 10 ++++++++++
+ 2 files changed, 11 insertions(+)
+
+--- a/drivers/usb/serial/Kconfig
++++ b/drivers/usb/serial/Kconfig
+@@ -59,6 +59,7 @@ config USB_SERIAL_SIMPLE
+ driver. Specifically, it supports:
+ - Suunto ANT+ USB device.
+ - Fundamental Software dongle.
++ - Google USB serial devices
+ - HP4x calculators
+ - a number of Motorola phones
+ - Siemens USB/MPI adapter.
+--- a/drivers/usb/serial/usb-serial-simple.c
++++ b/drivers/usb/serial/usb-serial-simple.c
+@@ -51,6 +51,14 @@ DEVICE(funsoft, FUNSOFT_IDS);
+ { USB_DEVICE(0x8087, 0x0716) }
+ DEVICE(flashloader, FLASHLOADER_IDS);
+
++/* Google Serial USB SubClass */
++#define GOOGLE_IDS() \
++ { USB_VENDOR_AND_INTERFACE_INFO(0x18d1, \
++ USB_CLASS_VENDOR_SPEC, \
++ 0x50, \
++ 0x01) }
++DEVICE(google, GOOGLE_IDS);
++
+ /* ViVOpay USB Serial Driver */
+ #define VIVOPAY_IDS() \
+ { USB_DEVICE(0x1d5f, 0x1004) } /* ViVOpay 8800 */
+@@ -86,6 +94,7 @@ static struct usb_serial_driver * const
+ &zio_device,
+ &funsoft_device,
+ &flashloader_device,
++ &google_device,
+ &vivopay_device,
+ &moto_modem_device,
+ &hp4x_device,
+@@ -98,6 +107,7 @@ static const struct usb_device_id id_tab
+ ZIO_IDS(),
+ FUNSOFT_IDS(),
+ FLASHLOADER_IDS(),
++ GOOGLE_IDS(),
+ VIVOPAY_IDS(),
+ MOTO_IDS(),
+ HP4X_IDS(),