W1: recode w1_slave_found logic

Simplified the logic in w1_slave_found by using the new
w1_attach_slave_device function to find a slave and mark it as active or
add the device if the crc checks.

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>

1 files changed, 6 insertions, 20 deletions

diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
index f3be2991e6e8..b1b21df835f5 100644
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -845,9 +845,7 @@ void w1_reconnect_slaves(struct w1_family *f, int attach)
 
 static void w1_slave_found(struct w1_master *dev, u64 rn)
 {
-        int slave_count;
         struct w1_slave *sl;
-        struct list_head *ent;
         struct w1_reg_num *tmp;
         u64 rn_le = cpu_to_le64(rn);
 
@@ -855,24 +853,12 @@ static void w1_slave_found(struct w1_master *dev, u64 rn)
 
         tmp = (struct w1_reg_num *) &rn;
 
-        slave_count = 0;
-        list_for_each(ent, &dev->slist) {
-
-                sl = list_entry(ent, struct w1_slave, w1_slave_entry);
-
-                if (sl->reg_num.family == tmp->family &&
-                    sl->reg_num.id == tmp->id &&
-                    sl->reg_num.crc == tmp->crc) {
-                        set_bit(W1_SLAVE_ACTIVE, (long *)&sl->flags);
-                        break;
-                }
-
-                slave_count++;
-        }
-
-        if (slave_count == dev->slave_count &&
-                rn && ((rn >> 56) & 0xff) == w1_calc_crc8((u8 *)&rn_le, 7)) {
-                w1_attach_slave_device(dev, tmp);
+        sl = w1_slave_search_device(dev, tmp);
+        if (sl) {
+                set_bit(W1_SLAVE_ACTIVE, (long *)&sl->flags);
+        } else {
+                if (rn && tmp->crc == w1_calc_crc8((u8 *)&rn_le, 7))
+                        w1_attach_slave_device(dev, tmp);
         }
 
         atomic_dec(&dev->refcnt);