USB: symbolserial: log the ioctl commands

We need to figure out what userspace programs are expecting from this
driver, so log them so we can try to get it right.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 59 insertions, 0 deletions

diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c
index c5990fd88e2c..8b3cbc87adc7 100644
--- a/drivers/usb/serial/symbolserial.c
+++ b/drivers/usb/serial/symbolserial.c
@@ -205,6 +205,62 @@ static void symbol_unthrottle(struct tty_struct *tty)
                                                         __func__, result);
 }
 
+static int symbol_ioctl(struct tty_struct *tty, struct file *file,
+                        unsigned int cmd, unsigned long arg)
+{
+        struct usb_serial_port *port = tty->driver_data;
+        struct device *dev = &port->dev;
+
+        /*
+         * Right now we need to figure out what commands
+         * most userspace tools want to see for this driver,
+         * so just log the things.
+         */
+        switch (cmd) {
+        case TIOCSERGETLSR:
+                dev_info(dev, "%s: TIOCSERGETLSR\n", __func__);
+                break;
+
+        case TIOCGSERIAL:
+                dev_info(dev, "%s: TIOCGSERIAL\n", __func__);
+                break;
+
+        case TIOCMIWAIT:
+                dev_info(dev, "%s: TIOCMIWAIT\n", __func__);
+                break;
+
+        case TIOCGICOUNT:
+                dev_info(dev, "%s: TIOCGICOUNT\n", __func__);
+                break;
+        default:
+                dev_info(dev, "%s: unknown (%d)\n", __func__, cmd);
+        }
+        return -ENOIOCTLCMD;
+}
+
+static int symbol_tiocmget(struct tty_struct *tty, struct file *file)
+{
+        struct usb_serial_port *port = tty->driver_data;
+        struct device *dev = &port->dev;
+
+        /* TODO */
+        /* probably just need to shadow whatever was sent to us here */
+        dev_info(dev, "%s\n", __func__);
+        return 0;
+}
+
+static int symbol_tiocmset(struct tty_struct *tty, struct file *file,
+                           unsigned int set, unsigned int clear)
+{
+        struct usb_serial_port *port = tty->driver_data;
+        struct device *dev = &port->dev;
+
+        /* TODO */
+        /* probably just need to shadow whatever was sent to us here */
+        dev_info(dev, "%s\n", __func__);
+        return 0;
+}
+
 static int symbol_startup(struct usb_serial *serial)
 {
         struct symbol_private *priv;
@@ -311,6 +367,9 @@ static struct usb_serial_driver symbol_device = {
         .shutdown =             symbol_shutdown,
         .throttle =             symbol_throttle,
         .unthrottle =           symbol_unthrottle,
+        .ioctl =                symbol_ioctl,
+        .tiocmget =             symbol_tiocmget,
+        .tiocmset =             symbol_tiocmset,
 };
 
 static int __init symbol_init(void)