Commit f3146aff authored by Henrique de Moraes Holschuh's avatar Henrique de Moraes Holschuh Committed by John W. Linville
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rfkill: clarify meaning of rfkill states

rfkill really should have been named rfswitch.  As it is, one can get
confused whether RFKILL_STATE_ON means the KILL switch is on (and
therefore, the radio is being *blocked* from operating), or whether it
means the RADIO rf output is on.

Clearly state that RFKILL_STATE_ON means the radio is *unblocked* from
operating (i.e. there is no rf killing going on).
Signed-off-by: default avatarHenrique de Moraes Holschuh <>
Acked-by: default avatarIvo van Doorn <>
Cc: Dmitry Torokhov <>
Signed-off-by: default avatarJohn W. Linville <>
parent 1839cea9
......@@ -8,6 +8,13 @@ rfkill - RF switch subsystem support
1: Implementation details
The rfkill switch subsystem exists to add a generic interface to circuitry that
can enable or disable the RF output of a radio *transmitter* of any type.
When a rfkill switch is in the RFKILL_STATE_ON, the radio transmitter is
*enabled*. When the rfkill switch is in the RFKILL_STATE_OFF, the radio
transmitter is *disabled*.
The rfkill switch subsystem offers support for keys often found on laptops
to enable wireless devices like WiFi and Bluetooth.
......@@ -44,8 +44,8 @@ enum rfkill_type {
enum rfkill_state {
RFKILL_STATE_OFF = 0, /* Radio output blocked */
RFKILL_STATE_ON = 1, /* Radio output active */
......@@ -53,7 +53,7 @@ enum rfkill_state {
* @name: Name of the switch.
* @type: Radio type which the button controls, the value stored
* here should be a value from enum rfkill_type.
* @state: State of the switch (on/off).
* @state: State of the switch, "ON" means radio can operate.
* @user_claim_unsupported: Whether the hardware supports exclusive
* RF-kill control by userspace. Set this before registering.
* @user_claim: Set when the switch is controlled exlusively by userspace.
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