rfkill: rewrite

This patch completely rewrites the rfkill core to address
the following deficiencies:

 * all rfkill drivers need to implement polling where necessary
   rather than having one central implementation

 * updating the rfkill state cannot be done from arbitrary
   contexts, forcing drivers to use schedule_work and requiring
   lots of code

 * rfkill drivers need to keep track of soft/hard blocked
   internally -- the core should do this

 * the rfkill API has many unexpected quirks, for example being
   asymmetric wrt. alloc/free and register/unregister

 * rfkill can call back into a driver from within a function the
   driver called -- this is prone to deadlocks and generally
   should be avoided

 * rfkill-input pointlessly is a separate module

 * drivers need to #ifdef rfkill functions (unless they want to
   depend on or select RFKILL) -- rfkill should provide inlines
   that do nothing if it isn't compiled in

 * the rfkill structure is not opaque -- drivers need to initialise
   it correctly (lots of sanity checking code required) -- instead
   force drivers to pass the right variables to rfkill_alloc()

 * the documentation is hard to read because it always assumes the
   reader is completely clueless and contains way TOO MANY CAPS

 * the rfkill code needlessly uses a lot of locks and atomic
   operations in locked sections

 * fix LED trigger to actually change the LED when the radio state
   changes -- this wasn't done before

Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad]
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 5 deletions

diff --git a/drivers/net/wireless/b43legacy/rfkill.h b/drivers/net/wireless/b43legacy/rfkill.h
index 11150a8032f0..adffc503a6a1 100644
--- a/drivers/net/wireless/b43legacy/rfkill.h
+++ b/drivers/net/wireless/b43legacy/rfkill.h
@@ -6,16 +6,12 @@ struct b43legacy_wldev;
 #ifdef CONFIG_B43LEGACY_RFKILL
 
 #include <linux/rfkill.h>
-#include <linux/workqueue.h>
-#include <linux/input-polldev.h>
 
 
 
 struct b43legacy_rfkill {
         /* The RFKILL subsystem data structure */
         struct rfkill *rfkill;
-        /* The poll device for the RFKILL input button */
-        struct input_polled_dev *poll_dev;
         /* Did initialization succeed? Used for freeing. */
         bool registered;
         /* The unique name of this rfkill switch */
@@ -27,7 +23,7 @@ struct b43legacy_rfkill {
 void b43legacy_rfkill_init(struct b43legacy_wldev *dev);
 void b43legacy_rfkill_exit(struct b43legacy_wldev *dev);
 
-char *b43legacy_rfkill_led_name(struct b43legacy_wldev *dev);
+const char *b43legacy_rfkill_led_name(struct b43legacy_wldev *dev);
 
 
 #else /* CONFIG_B43LEGACY_RFKILL */