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 dafc40d010b27367ee9bf10ac6176394fb39b1f2..a523adad638018f164361384f6bb668af072da78 100644 (file)
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -145,6 +145,7 @@ static struct ftdi_sio_quirk ftdi_8u2232c_quirk = {
  * /sys/bus/usb-serial/drivers/ftdi_sio/new_id and send a patch or report.
  */
 static const 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 b68084c11432a131b52017a859b65d19bbf225aa..6786b705ccf606ca47cb471d76b25c4b2981bf10 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
 
 /*