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[FreeBSD] This check isn't correct and causes at least mga to lockup.

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This commit is contained in:
Robert Noland 2008-10-23 15:42:49 -04:00
parent a59ea02ff8
commit 7dbeb18777
1 changed files with 4 additions and 6 deletions
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10
bsd-core/drm_lock.c
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@ -102,17 +102,15 @@ int drm_unlock(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
struct drm_lock *lock = data;
DRM_DEBUG("%d (pid %d) requests unlock (0x%08x), flags = 0x%08x\n",
lock->context, DRM_CURRENTPID, dev->lock.hw_lock->lock,
lock->flags);
if (lock->context == DRM_KERNEL_CONTEXT) {
DRM_ERROR("Process %d using kernel context %d\n",
DRM_CURRENTPID, lock->context);
return EINVAL;
}
/* Check that the context unlock being requested actually matches
* who currently holds the lock.
*/
if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) ||
_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock) != lock->context)
return EINVAL;
DRM_SPINLOCK(&dev->tsk_lock);
if (dev->locked_task_call != NULL) {