This is a note to let you know that I've just added the patch titled
usb: serial: ftdi_sio: add "bricked" FTDI device PID
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
>From 7f2719f0003da1ad13124ef00f48d7514c79e30d Mon Sep 17 00:00:00 2001
From: Perry Hung <iperry@xxxxxxxxx>
Date: Wed, 22 Oct 2014 23:31:34 -0400
Subject: usb: serial: ftdi_sio: add "bricked" FTDI device PID
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@xxxxxxxxx>
Cc: stable <stable@xxxxxxxxxxxxxxx>
Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
drivers/usb/serial/ftdi_sio.c | 1 +
drivers/usb/serial/ftdi_sio_ids.h | 6 ++++++
2 files changed, 7 insertions(+)
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 1f73ca3f6904..0dad8ce5a609 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -140,6 +140,7 @@ 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 b68084c11432..6786b705ccf6 100644
--- 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
/*
--
2.1.2
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