diff options
Diffstat (limited to 'include/linux/rfkill.h')
| -rw-r--r-- | include/linux/rfkill.h | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/include/linux/rfkill.h b/include/linux/rfkill.h index c5f6e54ec6ae..4cd64b0d9825 100644 --- a/include/linux/rfkill.h +++ b/include/linux/rfkill.h @@ -49,6 +49,7 @@ enum rfkill_state { RFKILL_STATE_SOFT_BLOCKED = 0, /* Radio output blocked */ RFKILL_STATE_UNBLOCKED = 1, /* Radio output allowed */ RFKILL_STATE_HARD_BLOCKED = 2, /* Output blocked, non-overrideable */ + RFKILL_STATE_MAX, /* marker for last valid state */ }; /* @@ -68,7 +69,8 @@ enum rfkill_state { * @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. - * @mutex: Guards switch state transitions + * @mutex: Guards switch state transitions. It serializes callbacks + * and also protects the state. * @data: Pointer to the RF button drivers private data which will be * passed along when toggling radio state. * @toggle_radio(): Mandatory handler to control state of the radio. @@ -89,12 +91,13 @@ struct rfkill { const char *name; enum rfkill_type type; - enum rfkill_state state; bool user_claim_unsupported; bool user_claim; + /* the mutex serializes callbacks and also protects + * the state */ struct mutex mutex; - + enum rfkill_state state; void *data; int (*toggle_radio)(void *data, enum rfkill_state state); int (*get_state)(void *data, enum rfkill_state *state); @@ -108,12 +111,14 @@ struct rfkill { }; #define to_rfkill(d) container_of(d, struct rfkill, dev) -struct rfkill *rfkill_allocate(struct device *parent, enum rfkill_type type); +struct rfkill * __must_check rfkill_allocate(struct device *parent, + enum rfkill_type type); void rfkill_free(struct rfkill *rfkill); -int rfkill_register(struct rfkill *rfkill); +int __must_check rfkill_register(struct rfkill *rfkill); void rfkill_unregister(struct rfkill *rfkill); int rfkill_force_state(struct rfkill *rfkill, enum rfkill_state state); +int rfkill_set_default(enum rfkill_type type, enum rfkill_state state); /** * rfkill_state_complement - return complementar state |