-/*
- "read" request on "volume" special file.
-*/
-static ssize_t variax_get_volume(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->volume);
-}
-
-/*
- "write" request on "volume" special file.
-*/
-static ssize_t variax_set_volume(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;
-
- if (line6_transmit_parameter(&variax->line6, VARIAXMIDI_volume,
- value) == 0)
- variax->volume = value;
-
- return count;
-}
-