X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=include%2Flinux%2Frfkill.h;h=4cd64b0d9825a6b2bbe33b9a584b1233a03ac54d;hb=1389ac4b976abdc0555280dfc1aa2c3abcc19641;hp=c5f6e54ec6ae6dd42106b340823e85f84250ec04;hpb=eda3d8f5604860aae1bb9996bb5efc4213778369;p=linux-2.6-omap-h63xx.git

diff --git a/include/linux/rfkill.h b/include/linux/rfkill.h
index c5f6e54ec6a..4cd64b0d982 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