diff options
Diffstat (limited to 'drivers/comedi/drivers.c')
| -rw-r--r-- | drivers/comedi/drivers.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/comedi/drivers.c b/drivers/comedi/drivers.c index 69cd2a253c66..7453f778f2c3 100644 --- a/drivers/comedi/drivers.c +++ b/drivers/comedi/drivers.c @@ -1063,6 +1063,14 @@ int comedi_device_attach(struct comedi_device *dev, struct comedi_devconfig *it) ret = -EIO; goto out; } + if (IS_ENABLED(CONFIG_LOCKDEP)) { + /* + * dev->spinlock is for private use by the attached low-level + * driver. Reinitialize it to stop lock-dependency tracking + * between attachments to different low-level drivers. + */ + spin_lock_init(&dev->spinlock); + } dev->driver = driv; dev->board_name = dev->board_ptr ? *(const char **)dev->board_ptr : dev->driver->driver_name; |