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authorJohannes Berg <johannes@sipsolutions.net>2009-06-02 13:01:40 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-06-03 14:06:14 -0400
commit6081162e2ed78dfcf149b076b047078ab1445cc2 (patch)
treeaef1cf51ee0a8f77f562defe1fe8ec75812474b7
parent7643a2c3fcc13cd6fbd731f214463547383418ae (diff)
downloadop-kernel-dev-6081162e2ed78dfcf149b076b047078ab1445cc2.zip
op-kernel-dev-6081162e2ed78dfcf149b076b047078ab1445cc2.tar.gz
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>
-rw-r--r--include/linux/rfkill.h12
-rw-r--r--net/rfkill/core.c13
2 files changed, 25 insertions, 0 deletions
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 @@ void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw);
* 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 @@ static inline void rfkill_set_global_sw_state(const enum rfkill_type type,
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 @@ static struct class rfkill_class = {
.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,
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