usb: serial: ftdi_sio: add "bricked" FTDI device PID

commit 7f2719f0003da1ad13124ef00f48d7514c79e30d upstream.

An official recent Windows driver from FTDI detects counterfeit devices
and reprograms the internal EEPROM containing the USB PID to 0, effectively
bricking the device.

Add support for this VID/PID pair to correctly bind the driver on these
devices.

See:
http://hackaday.com/2014/10/22/watch-that-windows-update-ftdi-drivers-are-killing-fake-chips/

Signed-off-by: Perry Hung <iperry@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 1cd759534f3e5af058ee329632da0316196addf8..768c2b4722d1e972b995d5d5adc7a3cf8ce0c98e 100644 (file)
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -148,6 +148,7 @@ static struct ftdi_sio_quirk ftdi_8u2232c_quirk = {
  * /sys/bus/usb/ftdi_sio/new_id, then send patch/report!
  */
 static struct usb_device_id id_table_combined [] = {
+       { USB_DEVICE(FTDI_VID, FTDI_BRICK_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_ZEITCONTROL_TAGTRACE_MIFARE_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CTI_MINI_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_CTI_NANO_PID) },

diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
index 933ff1f8fa9a14abc33903065d1ba0b5c5a028c3..302ab9a71f060055825f48aac211551391407920 100644 (file)
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -30,6 +30,12 @@
 
 /*** third-party PIDs (using FTDI_VID) ***/
 
+/*
+ * Certain versions of the official Windows FTDI driver reprogrammed
+ * counterfeit FTDI devices to PID 0. Support these devices anyway.
+ */
+#define FTDI_BRICK_PID         0x0000
+
 #define FTDI_LUMEL_PD12_PID    0x6002
 
 /*