[PATCH] USB: pl2303_update_line_status data length fix

Minimum data length must be UART_STATE + 1, as data[UART_STATE] is being
accessed for the new line_state. Although PL-2303 hardware is not
expected to send data with exactly UART_STATE length, this keeps it on
the safe side.

Signed-off-by: Horst Schirmeier <horst@schirmeier.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index c96ba9fc19e0123c1bb2e22f71821226811f71bd..f037210561905ecd1149e31570a98a112f26dc27 100644 (file)
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -810,7 +810,7 @@ static void pl2303_update_line_status(struct usb_serial_port *port,
        struct pl2303_private *priv = usb_get_serial_port_data(port);
        unsigned long flags;
        u8 status_idx = UART_STATE;
-       u8 length = UART_STATE;
+       u8 length = UART_STATE + 1;
 
        if ((le16_to_cpu(port->serial->dev->descriptor.idVendor) == SIEMENS_VENDOR_ID) &&
            (le16_to_cpu(port->serial->dev->descriptor.idProduct) == SIEMENS_PRODUCT_ID_X65 ||