[PATCH] drivers/isdn/gigaset: reduce mutex scope

Do not lock the cardstate structure mutex earlier than necessary.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/isdn/gigaset/common.c b/drivers/isdn/gigaset/common.c
index 4f75cce6fdff..9d4ae04eb33f 100644
--- a/drivers/isdn/gigaset/common.c
+++ b/drivers/isdn/gigaset/common.c
@@ -640,7 +640,6 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
                 return NULL;
         }
         mutex_init(&cs->mutex);
-        mutex_lock(&cs->mutex);
 
         gig_dbg(DEBUG_INIT, "allocating bcs[0..%d]", channels - 1);
         cs->bcs = kmalloc(channels * sizeof(struct bc_state), GFP_KERNEL);
@@ -738,6 +737,7 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
 
         ++cs->cs_init;
 
+        /* set up character device */
         gigaset_if_init(cs);
 
         /* set up device sysfs */
@@ -753,11 +753,9 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
         add_timer(&cs->timer);
 
         gig_dbg(DEBUG_INIT, "cs initialized");
-        mutex_unlock(&cs->mutex);
         return cs;
 
 error:
-        mutex_unlock(&cs->mutex);
         gig_dbg(DEBUG_INIT, "failed");
         gigaset_freecs(cs);
         return NULL;