* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#include <linux/rwsem.h>
+
struct i2c_devinfo {
struct list_head list;
int busnum;
/* board_lock protects board_list and first_dynamic_bus_num.
* only i2c core components are allowed to use these symbols.
*/
-extern struct mutex __i2c_board_lock;
+extern struct rw_semaphore __i2c_board_lock;
extern struct list_head __i2c_board_list;
extern int __i2c_first_dynamic_bus_num;