rfkill: add function to query state
Sometimes it is necessary to know how the state is,
and it is easier to query rfkill than keep track of
it somewhere else, so add a function for that. This
could later be expanded to return hard/soft block,
but so far that isn't necessary.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/include/linux/rfkill.h b/include/linux/rfkill.h
index 7c116f6..ee3edde 100644
--- a/include/linux/rfkill.h
+++ b/include/linux/rfkill.h
@@ -261,6 +261,13 @@
* registered drivers?
*/
void rfkill_set_global_sw_state(const enum rfkill_type type, bool blocked);
+
+/**
+ * rfkill_blocked - query rfkill block
+ *
+ * @rfkill: rfkill struct to query
+ */
+bool rfkill_blocked(struct rfkill *rfkill);
#else /* !RFKILL */
static inline struct rfkill * __must_check
rfkill_alloc(const char *name,
@@ -313,6 +320,11 @@
bool blocked)
{
}
+
+static inline bool rfkill_blocked(struct rfkill *rfkill)
+{
+ return false;
+}
#endif /* RFKILL || RFKILL_MODULE */
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index 2230aa6..91e9168 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -773,6 +773,19 @@
.resume = rfkill_resume,
};
+bool rfkill_blocked(struct rfkill *rfkill)
+{
+ unsigned long flags;
+ u32 state;
+
+ spin_lock_irqsave(&rfkill->lock, flags);
+ state = rfkill->state;
+ spin_unlock_irqrestore(&rfkill->lock, flags);
+
+ return !!(state & RFKILL_BLOCK_ANY);
+}
+EXPORT_SYMBOL(rfkill_blocked);
+
struct rfkill * __must_check rfkill_alloc(const char *name,
struct device *parent,