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-rw-r--r--drivers/w1/w1.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
index 2f2e894ea0c8..69075c3dfc73 100644
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -688,6 +688,7 @@ static int w1_attach_slave_device(struct w1_master *dev, struct w1_reg_num *rn)
memcpy(&sl->reg_num, rn, sizeof(sl->reg_num));
atomic_set(&sl->refcnt, 0);
init_completion(&sl->released);
+ mutex_init(&sl->mutex);
spin_lock(&w1_flock);
f = w1_family_registered(rn->family);