1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 76db2fef4657..3abb3c863647 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -92,6 +92,7 @@ struct ftdi_sio_quirk {
 };
 
 static int   ftdi_jtag_probe            (struct usb_serial *serial);
+static int   ftdi_mtxorb_hack_setup     (struct usb_serial *serial);
 static void  ftdi_USB_UIRT_setup        (struct ftdi_private *priv);
 static void  ftdi_HE_TIRA1_setup        (struct ftdi_private *priv);
 
@@ -99,6 +100,10 @@ static struct ftdi_sio_quirk ftdi_jtag_quirk = {
         .probe  = ftdi_jtag_probe,
 };
 
+static struct ftdi_sio_quirk ftdi_mtxorb_hack_quirk = {
+        .probe  = ftdi_mtxorb_hack_setup,
+};
+
 static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = {
         .port_probe = ftdi_USB_UIRT_setup,
 };
@@ -161,6 +166,8 @@ static struct usb_device_id id_table_combined [] = {
         { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) },
+        { USB_DEVICE(MTXORB_VK_VID, MTXORB_VK_PID),
+                .driver_info = (kernel_ulong_t)&ftdi_mtxorb_hack_quirk },
         { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) },
@@ -274,6 +281,7 @@ static struct usb_device_id id_table_combined [] = {
         { USB_DEVICE(FTDI_VID, FTDI_ELV_FS20SIG_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) },
+        { USB_DEVICE(FTDI_VID, FTDI_ELV_EM1010PC_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) },
         { USB_DEVICE(FTDI_VID, LINX_SDMUSBQSS_PID) },
         { USB_DEVICE(FTDI_VID, LINX_MASTERDEVEL2_PID) },
@@ -351,6 +359,7 @@ static struct usb_device_id id_table_combined [] = {
         { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) },
         { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_ELSTER_UNICOM_PID) },
+        { USB_DEVICE(FTDI_VID, FTDI_PROPOX_JTAGCABLEII_PID) },
         { USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID),
                 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
         { USB_DEVICE(FIC_VID, FIC_NEO1973_DEBUG_PID),
@@ -1088,6 +1097,23 @@ static int ftdi_jtag_probe(struct usb_serial *serial)
         return 0;
 }
 
+/*
+ * The Matrix Orbital VK204-25-USB has an invalid IN endpoint.
+ * We have to correct it if we want to read from it.
+ */
+static int ftdi_mtxorb_hack_setup(struct usb_serial *serial)
+{
+        struct usb_host_endpoint *ep = serial->dev->ep_in[1];
+        struct usb_endpoint_descriptor *ep_desc = &ep->desc;
+
+        if (ep->enabled && ep_desc->wMaxPacketSize == 0) {
+                ep_desc->wMaxPacketSize = 0x40;
+                info("Fixing invalid wMaxPacketSize on read pipe");
+        }
+
+        return 0;
+}
+
 /* ftdi_shutdown is called from usbserial:usb_serial_disconnect
  *   it is called when the usb device is disconnected
  *