w1: continue slave search where previous left off

Search will detect at most max_slave_count devices per run, if there
are more pick up the next search where the previous left off.

Signed-off-by: David Fries <David@Fries.net>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/w1/w1.h b/drivers/w1/w1.h
index bd10b3c2a406..80fbdf908919 100644
--- a/drivers/w1/w1.h
+++ b/drivers/w1/w1.h
@@ -150,6 +150,7 @@ struct w1_bus_master
 
         /** Really nice hardware can handles the different types of ROM search
          *  w1_master* is passed to the slave found callback.
+         *  u8 is search_type, W1_SEARCH or W1_ALARM_SEARCH
          */
         void            (*search)(void *, struct w1_master *,
                 u8, w1_slave_found_callback);
@@ -177,6 +178,8 @@ struct w1_master
         int                     initialized;
         u32                     id;
         int                     search_count;
+        /* id to start searching on, to continue a search or 0 to restart */
+        u64                     search_id;
 
         atomic_t                refcnt;