1 files changed, 27 insertions, 0 deletions

diff --git a/drivers/usb/serial/funsoft.c b/drivers/usb/serial/funsoft.c
index 77b977206a8c..d3be9214c7c1 100644
--- a/drivers/usb/serial/funsoft.c
+++ b/drivers/usb/serial/funsoft.c
@@ -14,6 +14,9 @@
 #include <linux/module.h>
 #include <linux/usb.h>
 #include <linux/usb/serial.h>
+#include <asm/uaccess.h>
+
+static int debug;
 
 static struct usb_device_id id_table [] = {
         { USB_DEVICE(0x1404, 0xcddc) },
@@ -21,6 +24,26 @@ static struct usb_device_id id_table [] = {
 };
 MODULE_DEVICE_TABLE(usb, id_table);
 
+static int funsoft_ioctl(struct usb_serial_port *port, struct file *file,
+                         unsigned int cmd, unsigned long arg)
+{
+        struct termios t;
+
+        dbg("%s - port %d, cmd 0x%04x", __FUNCTION__, port->number, cmd);
+
+        if (cmd == TCSETSF) {
+                if (user_termios_to_kernel_termios(&t, (void __user *)arg))
+                        return -EFAULT;
+
+                dbg("%s - iflag:%x oflag:%x cflag:%x lflag:%x", __FUNCTION__,
+                    t.c_iflag, t.c_oflag, t.c_cflag, t.c_lflag);
+
+                if (!(t.c_lflag & ICANON))
+                        return -EINVAL;
+        }
+        return -ENOIOCTLCMD;
+}
+
 static struct usb_driver funsoft_driver = {
         .name =         "funsoft",
         .probe =        usb_serial_probe,
@@ -39,6 +62,7 @@ static struct usb_serial_driver funsoft_device = {
         .num_bulk_in =          NUM_DONT_CARE,
         .num_bulk_out =         NUM_DONT_CARE,
         .num_ports =            1,
+        .ioctl =                funsoft_ioctl,
 };
 
 static int __init funsoft_init(void)
@@ -63,3 +87,6 @@ static void __exit funsoft_exit(void)
 module_init(funsoft_init);
 module_exit(funsoft_exit);
 MODULE_LICENSE("GPL");
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");