diff options
Diffstat (limited to 'drivers/firewire/fw-device.c')
| -rw-r--r-- | drivers/firewire/fw-device.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/firewire/fw-device.c b/drivers/firewire/fw-device.c index 71976571c80..7503b8d9abe 100644 --- a/drivers/firewire/fw-device.c +++ b/drivers/firewire/fw-device.c @@ -550,6 +550,7 @@ static int shutdown_unit(struct device *device, void *data) return 0; } +static DECLARE_RWSEM(idr_rwsem); static DEFINE_IDR(fw_device_idr); int fw_cdev_major; @@ -557,9 +558,9 @@ struct fw_device *fw_device_from_devt(dev_t devt) { struct fw_device *device; - down_read(&fw_bus_type.subsys.rwsem); + down_read(&idr_rwsem); device = idr_find(&fw_device_idr, MINOR(devt)); - up_read(&fw_bus_type.subsys.rwsem); + up_read(&idr_rwsem); return device; } @@ -570,9 +571,9 @@ static void fw_device_shutdown(struct work_struct *work) container_of(work, struct fw_device, work.work); int minor = MINOR(device->device.devt); - down_write(&fw_bus_type.subsys.rwsem); + down_write(&idr_rwsem); idr_remove(&fw_device_idr, minor); - up_write(&fw_bus_type.subsys.rwsem); + up_write(&idr_rwsem); fw_device_cdev_remove(device); device_for_each_child(&device->device, NULL, shutdown_unit); @@ -621,10 +622,10 @@ static void fw_device_init(struct work_struct *work) } err = -ENOMEM; - down_write(&fw_bus_type.subsys.rwsem); + down_write(&idr_rwsem); if (idr_pre_get(&fw_device_idr, GFP_KERNEL)) err = idr_get_new(&fw_device_idr, device, &minor); - up_write(&fw_bus_type.subsys.rwsem); + up_write(&idr_rwsem); if (err < 0) goto error; @@ -670,9 +671,9 @@ static void fw_device_init(struct work_struct *work) return; error_with_cdev: - down_write(&fw_bus_type.subsys.rwsem); + down_write(&idr_rwsem); idr_remove(&fw_device_idr, minor); - up_write(&fw_bus_type.subsys.rwsem); + up_write(&idr_rwsem); error: put_device(&device->device); } |