W1: new module parameter search_count

Added a new module parameter search_count which allows overriding the
default search count.  -1 continual, 0 disabled, N that many times.

Signed-off-by: David Fries <david@fries.net>
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/w1/w1_int.c b/drivers/w1/w1_int.c
index 9d723ef..3fd6e66 100644 (file)
--- a/drivers/w1/w1_int.c
+++ b/drivers/w1/w1_int.c
@@ -30,6 +30,8 @@
 #include "w1_int.h"
 
 static u32 w1_ids = 1;
+static int w1_search_count = -1; /* Default is continual scan */
+module_param_named(search_count, w1_search_count, int, 0);
 
 static int w1_enable_pullup = 1;
 module_param_named(enable_pullup, w1_enable_pullup, int, 0);
@@ -62,8 +64,8 @@ static struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
        dev->initialized        = 0;
        dev->id                 = id;
        dev->slave_ttl          = slave_ttl;
+       dev->search_count       = w1_search_count;
        dev->enable_pullup      = w1_enable_pullup;
-        dev->search_count      = -1; /* continual scan */
 
        /* 1 for w1_process to decrement
         * 1 for __w1_remove_master_device to decrement