diff options
Diffstat (limited to 'drivers/firewire/core-cdev.c')
| -rw-r--r-- | drivers/firewire/core-cdev.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c index b1c11775839c..e6ad3bb6c1a6 100644 --- a/drivers/firewire/core-cdev.c +++ b/drivers/firewire/core-cdev.c @@ -253,14 +253,11 @@ static int fw_device_op_open(struct inode *inode, struct file *file) init_waitqueue_head(&client->wait); init_waitqueue_head(&client->tx_flush_wait); INIT_LIST_HEAD(&client->phy_receiver_link); + INIT_LIST_HEAD(&client->link); kref_init(&client->kref); file->private_data = client; - mutex_lock(&device->client_list_mutex); - list_add_tail(&client->link, &device->client_list); - mutex_unlock(&device->client_list_mutex); - return nonseekable_open(inode, file); } @@ -451,15 +448,20 @@ static int ioctl_get_info(struct client *client, union ioctl_arg *arg) if (ret != 0) return -EFAULT; + mutex_lock(&client->device->client_list_mutex); + client->bus_reset_closure = a->bus_reset_closure; if (a->bus_reset != 0) { fill_bus_reset_event(&bus_reset, client); - if (copy_to_user(u64_to_uptr(a->bus_reset), - &bus_reset, sizeof(bus_reset))) - return -EFAULT; + ret = copy_to_user(u64_to_uptr(a->bus_reset), + &bus_reset, sizeof(bus_reset)); } + if (ret == 0 && list_empty(&client->link)) + list_add_tail(&client->link, &client->device->client_list); - return 0; + mutex_unlock(&client->device->client_list_mutex); + + return ret ? -EFAULT : 0; } static int add_client_resource(struct client *client, @@ -1583,7 +1585,7 @@ static int dispatch_ioctl(struct client *client, if (_IOC_TYPE(cmd) != '#' || _IOC_NR(cmd) >= ARRAY_SIZE(ioctl_handlers) || _IOC_SIZE(cmd) > sizeof(buffer)) - return -EINVAL; + return -ENOTTY; if (_IOC_DIR(cmd) == _IOC_READ) memset(&buffer, 0, _IOC_SIZE(cmd)); |