diff options
Diffstat (limited to 'drivers/gpu/drm/drm_lock.c')
| -rw-r--r-- | drivers/gpu/drm/drm_lock.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_lock.c b/drivers/gpu/drm/drm_lock.c index 67a1a2ca7174..b70058e77a28 100644 --- a/drivers/gpu/drm/drm_lock.c +++ b/drivers/gpu/drm/drm_lock.c @@ -347,3 +347,22 @@ void drm_legacy_lock_release(struct drm_device *dev, struct file *filp) _DRM_LOCKING_CONTEXT(file_priv->master->lock.hw_lock->lock)); } } + +void drm_legacy_lock_master_cleanup(struct drm_device *dev, struct drm_master *master) +{ + if (!drm_core_check_feature(dev, DRIVER_LEGACY)) + return; + + /* + * Since the master is disappearing, so is the + * possibility to lock. + */ mutex_lock(&dev->struct_mutex); + if (master->lock.hw_lock) { + if (dev->sigdata.lock == master->lock.hw_lock) + dev->sigdata.lock = NULL; + master->lock.hw_lock = NULL; + master->lock.file_priv = NULL; + wake_up_interruptible_all(&master->lock.lock_queue); + } + mutex_unlock(&dev->struct_mutex); +} |