staging: line6: drop variax active sysfs attr

The get_string() function has no other callers so remove it too.

Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/line6/variax.c b/drivers/staging/line6/variax.c
index 0f1846e..4600d24 100644 (file)
--- a/drivers/staging/line6/variax.c
+++ b/drivers/staging/line6/variax.c
@@ -276,38 +276,6 @@ void line6_variax_process_message(struct usb_line6_variax *variax)
 }
 
 /*
-       "read" request on "active" special file.
-*/
-static ssize_t variax_get_active(struct device *dev,
-                                struct device_attribute *attr, char *buf)
-{
-       struct usb_line6_variax *variax =
-           usb_get_intfdata(to_usb_interface(dev));
-       return sprintf(buf, "%d\n",
-                      variax->buffer_activate[VARIAX_OFFSET_ACTIVATE]);
-}
-
-/*
-       "write" request on "active" special file.
-*/
-static ssize_t variax_set_active(struct device *dev,
-                                struct device_attribute *attr,
-                                const char *buf, size_t count)
-{
-       struct usb_line6_variax *variax =
-           usb_get_intfdata(to_usb_interface(dev));
-       u8 value;
-       int ret;
-
-       ret = kstrtou8(buf, 10, &value);
-       if (ret)
-               return ret;
-
-       variax_activate_async(variax, value ? 1 : 0);
-       return count;
-}
-
-/*
        "read" request on "guitar" special file.
 */
 static ssize_t variax_get_guitar(struct device *dev,
@@ -366,8 +334,6 @@ static ssize_t variax_set_raw2(struct device *dev,
 #endif
 
 /* Variax workbench special files: */
-static DEVICE_ATTR(active, S_IWUSR | S_IRUGO, variax_get_active,
-                  variax_set_active);
 static DEVICE_ATTR(guitar, S_IRUGO, variax_get_guitar, line6_nop_write);
 
 #ifdef CONFIG_LINE6_USB_RAW
@@ -404,7 +370,6 @@ static void variax_destruct(struct usb_interface *interface)
 static int variax_create_files2(struct device *dev)
 {
        int err;
-       CHECK_RETURN(device_create_file(dev, &dev_attr_active));
        CHECK_RETURN(device_create_file(dev, &dev_attr_guitar));
 #ifdef CONFIG_LINE6_USB_RAW
        CHECK_RETURN(device_create_file(dev, &dev_attr_raw));
@@ -504,7 +469,6 @@ void line6_variax_disconnect(struct usb_interface *interface)
        if (dev != NULL) {
                /* remove sysfs entries: */
                line6_variax_remove_files(0, 0, dev);
-               device_remove_file(dev, &dev_attr_active);
                device_remove_file(dev, &dev_attr_guitar);
 #ifdef CONFIG_LINE6_USB_RAW
                device_remove_file(dev, &dev_attr_raw);