diff options
| -rw-r--r-- | drivers/w1/slaves/w1_bq27000.c | 4 | ||||
| -rw-r--r-- | drivers/w1/w1.c | 1 | ||||
| -rw-r--r-- | drivers/w1/w1.h | 1 |
3 files changed, 4 insertions, 2 deletions
diff --git a/drivers/w1/slaves/w1_bq27000.c b/drivers/w1/slaves/w1_bq27000.c index 52ad812fa1e7..87554788fa32 100644 --- a/drivers/w1/slaves/w1_bq27000.c +++ b/drivers/w1/slaves/w1_bq27000.c @@ -31,10 +31,10 @@ static int w1_bq27000_read(struct device *dev, unsigned int reg) u8 val; struct w1_slave *sl = container_of(dev->parent, struct w1_slave, dev); - mutex_lock(&sl->master->mutex); + mutex_lock(&sl->mutex); w1_write_8(sl->master, HDQ_CMD_READ | reg); val = w1_read_8(sl->master); - mutex_unlock(&sl->master->mutex); + mutex_unlock(&sl->mutex); return val; } 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); diff --git a/drivers/w1/w1.h b/drivers/w1/w1.h index 4d012ca3f32c..8c8be380a98a 100644 --- a/drivers/w1/w1.h +++ b/drivers/w1/w1.h @@ -75,6 +75,7 @@ struct w1_slave void *family_data; struct device dev; struct completion released; + struct mutex mutex; }; typedef void (*w1_slave_found_callback)(struct w1_master *, u64); |