diff options
Diffstat (limited to 'drivers/media/cec/core/cec-api.c')
| -rw-r--r-- | drivers/media/cec/core/cec-api.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/media/cec/core/cec-api.c b/drivers/media/cec/core/cec-api.c index 769e6b4cddce..d72ad48c9898 100644 --- a/drivers/media/cec/core/cec-api.c +++ b/drivers/media/cec/core/cec-api.c @@ -586,6 +586,7 @@ static int cec_open(struct inode *inode, struct file *filp) return err; } + /* serialize adap_enable */ mutex_lock(&devnode->lock); if (list_empty(&devnode->fhs) && !adap->needs_hpd && @@ -624,7 +625,9 @@ static int cec_open(struct inode *inode, struct file *filp) } #endif + mutex_lock(&devnode->lock_fhs); list_add(&fh->list, &devnode->fhs); + mutex_unlock(&devnode->lock_fhs); mutex_unlock(&devnode->lock); return 0; @@ -653,8 +656,11 @@ static int cec_release(struct inode *inode, struct file *filp) cec_monitor_all_cnt_dec(adap); mutex_unlock(&adap->lock); + /* serialize adap_enable */ mutex_lock(&devnode->lock); + mutex_lock(&devnode->lock_fhs); list_del(&fh->list); + mutex_unlock(&devnode->lock_fhs); if (cec_is_registered(adap) && list_empty(&devnode->fhs) && !adap->needs_hpd && adap->phys_addr == CEC_PHYS_ADDR_INVALID) { WARN_ON(adap->ops->adap_enable(adap, false)); @@ -669,7 +675,7 @@ static int cec_release(struct inode *inode, struct file *filp) data->blocking = false; data->fh = NULL; - list_del(&data->xfer_list); + list_del_init(&data->xfer_list); } mutex_unlock(&adap->lock); while (!list_empty(&fh->msgs)) { |