Function prototype or declaration at include/linux/rfkill.h, line 79 References: drivers/net/usb/hso.c, line 2459 drivers/platform/x86/acer-wmi.c, line 1881 drivers/platform/x86/asus-wmi.c, line 1265 drivers/platform/x86/asus-wmi.c, line 1268 drivers/platform/x86/compal-laptop.c, line 935 drivers/platform/x86/compal-laptop.c, line 945 drivers/platform/x86/dell/dell-laptop.c, line 764 drivers/platform/x86/dell/dell-laptop.c, line 777 drivers/platform/x86/dell/dell-laptop.c, line 791 drivers/platform/x86/hp-wmi.c, line 727 drivers/platform/x86/hp-wmi.c, line 743 drivers/platform/x86/hp-wmi.c, line 761 drivers/platform/x86/hp-wmi.c, line 844 drivers/platform/x86/ideapad-laptop.c, line 995 drivers/platform/x86/samsung-laptop.c, line 967 drivers/platform/x86/sony-laptop.c, line 1637 drivers/platform/x86/thinkpad_acpi.c, line 1268 drivers/platform/x86/toshiba_acpi.c, line 2602 include/linux/rfkill.h, line 79 include/linux/rfkill.h, line 242 net/bluetooth/hci_core.c, line 3951 net/nfc/core.c, line 1133 net/rfkill/core.c, line 950 net/rfkill/core.c, line 989 net/wireless/core.c, line 536