W1: w1_family, remove unused variable need_exit

Removed the w1_family structure member variable need_exit.  It was only
being set and never used.  Even if it were to be used it is a polling type
operation.

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>

2 files changed, 1 insertions, 7 deletions

diff --git a/drivers/w1/w1_family.c b/drivers/w1/w1_family.c
index 8c35f9ccb68..4a099041f28 100644
--- a/drivers/w1/w1_family.c
+++ b/drivers/w1/w1_family.c
@@ -48,7 +48,6 @@ int w1_register_family(struct w1_family *newf)
 
         if (!ret) {
                 atomic_set(&newf->refcnt, 0);
-                newf->need_exit = 0;
                 list_add_tail(&newf->family_entry, &w1_families);
         }
         spin_unlock(&w1_flock);
@@ -73,9 +72,6 @@ void w1_unregister_family(struct w1_family *fent)
                         break;
                 }
         }
-
-        fent->need_exit = 1;
-
         spin_unlock(&w1_flock);
 
         /* deatch devices using this family code */
@@ -113,8 +109,7 @@ struct w1_family * w1_family_registered(u8 fid)
 
 static void __w1_family_put(struct w1_family *f)
 {
-        if (atomic_dec_and_test(&f->refcnt))
-                f->need_exit = 1;
+        atomic_dec(&f->refcnt);
 }
 
 void w1_family_put(struct w1_family *f)
diff --git a/drivers/w1/w1_family.h b/drivers/w1/w1_family.h
index 296a87edd92..30531331a64 100644
--- a/drivers/w1/w1_family.h
+++ b/drivers/w1/w1_family.h
@@ -53,7 +53,6 @@ struct w1_family
         struct w1_family_ops    *fops;
 
         atomic_t                refcnt;
-        u8                      need_exit;
 };
 
 extern spinlock_t w1_flock;