1 files changed, 26 insertions, 14 deletions

diff --git a/include/linux/rfkill.h b/include/linux/rfkill.h
index 2ce29831feb6..3392c59d2706 100644
--- a/include/linux/rfkill.h
+++ b/include/linux/rfkill.h
@@ -6,20 +6,17 @@
  * Copyright (C) 2007 Dmitry Torokhov
  * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
  *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the
- * Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
 #include <linux/types.h>
@@ -47,6 +44,7 @@ enum rfkill_type {
         RFKILL_TYPE_UWB,
         RFKILL_TYPE_WIMAX,
         RFKILL_TYPE_WWAN,
+        RFKILL_TYPE_GPS,
         NUM_RFKILL_TYPES,
 };
 
@@ -82,6 +80,20 @@ struct rfkill_event {
         __u8  soft, hard;
 } __packed;
 
+/*
+ * We are planning to be backward and forward compatible with changes
+ * to the event struct, by adding new, optional, members at the end.
+ * When reading an event (whether the kernel from userspace or vice
+ * versa) we need to accept anything that's at least as large as the
+ * version 1 event size, but might be able to accept other sizes in
+ * the future.
+ *
+ * One exception is the kernel -- we already have two event sizes in
+ * that we've made the 'hard' member optional since our only option
+ * is to ignore it anyway.
+ */
+#define RFKILL_EVENT_SIZE_V1    8
+
 /* ioctl for turning off rfkill-input (if present) */
 #define RFKILL_IOC_MAGIC        'R'
 #define RFKILL_IOC_NOINPUT      1
@@ -224,7 +236,7 @@ void rfkill_destroy(struct rfkill *rfkill);
  * should be blocked) so that drivers need not keep track of the soft
  * block state -- which they might not be able to.
  */
-bool __must_check rfkill_set_hw_state(struct rfkill *rfkill, bool blocked);
+bool rfkill_set_hw_state(struct rfkill *rfkill, bool blocked);
 
 /**
  * rfkill_set_sw_state - Set the internal rfkill software block state