Symbol: _M220
drivers/input/misc/yealink.c
741
static DEVICE_ATTR(show_icon , _M220, NULL , show_icon );
drivers/input/misc/yealink.c
742
static DEVICE_ATTR(hide_icon , _M220, NULL , hide_icon );
drivers/input/misc/yealink.c
743
static DEVICE_ATTR(ringtone , _M220, NULL , store_ringtone);