-stable review patch. If anyone has any objections, please let us know. --------------------- From: Kevin Vance Workaround for the FT232RL-based, Matrix Orbital VK204-25-USB serial port added to the ftdi_sio driver. The device has an invalid endpoint descriptor, which must be modified before it can be used. Signed-off-by: Kevin Vance Signed-off-by: Greg Kroah-Hartman [chrisw@sous-sol.org: backport to 2.6.24.3 w/out ftdi_jtag_probe] Signed-off-by: Chris Wright --- drivers/usb/serial/ftdi_sio.c | 24 ++++++++++++++++++++++++ drivers/usb/serial/ftdi_sio.h | 7 +++++++ 2 files changed, 31 insertions(+) --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -310,6 +310,7 @@ struct ftdi_sio_quirk { }; static int ftdi_olimex_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); @@ -317,6 +318,10 @@ static struct ftdi_sio_quirk ftdi_olimex .probe = ftdi_olimex_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, }; @@ -379,6 +384,8 @@ static struct usb_device_id id_table_com { 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) }, @@ -1301,6 +1308,23 @@ static int ftdi_olimex_probe(struct usb_ 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 * --- a/drivers/usb/serial/ftdi_sio.h +++ b/drivers/usb/serial/ftdi_sio.h @@ -98,6 +98,13 @@ #define FTDI_MTXORB_5_PID 0xFA05 /* Matrix Orbital Product Id */ #define FTDI_MTXORB_6_PID 0xFA06 /* Matrix Orbital Product Id */ +/* + * The following are the values for the Matrix Orbital VK204-25-USB + * display, which use the FT232RL. + */ +#define MTXORB_VK_VID 0x1b3d +#define MTXORB_VK_PID 0x0158 + /* Interbiometrics USB I/O Board */ /* Developed for Interbiometrics by Rudolf Gugler */ #define INTERBIOMETRICS_VID 0x1209 -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/