UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/radeon/kms: fix lock ordering in ring, ib handling 

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2010-05-06 11:02:24 -04:00 committed by Dave Airlie
parent 01434b4bfb
commit ca2af92311
1 changed files with 27 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
drivers/gpu/drm/radeon/radeon_ring.c
View File

@ -219,24 +219,26 @@ int radeon_ib_pool_init(struct radeon_device *rdev)
void radeon_ib_pool_fini(struct radeon_device *rdev)
{
int r;
struct radeon_bo *robj;
if (!rdev->ib_pool.ready) {
return;
}
mutex_lock(&rdev->ib_pool.mutex);
radeon_ib_bogus_cleanup(rdev);
if (rdev->ib_pool.robj) {
r = radeon_bo_reserve(rdev->ib_pool.robj, false);
if (likely(r == 0)) {
radeon_bo_kunmap(rdev->ib_pool.robj);
radeon_bo_unpin(rdev->ib_pool.robj);
radeon_bo_unreserve(rdev->ib_pool.robj);
}
radeon_bo_unref(&rdev->ib_pool.robj);
rdev->ib_pool.robj = NULL;
}
robj = rdev->ib_pool.robj;
rdev->ib_pool.robj = NULL;
mutex_unlock(&rdev->ib_pool.mutex);
if (robj) {
r = radeon_bo_reserve(robj, false);
if (likely(r == 0)) {
radeon_bo_kunmap(robj);
radeon_bo_unpin(robj);
radeon_bo_unreserve(robj);
}
radeon_bo_unref(&robj);
}
}
@ -359,20 +361,23 @@ int radeon_ring_init(struct radeon_device *rdev, unsigned ring_size)
void radeon_ring_fini(struct radeon_device *rdev)
{
int r;
struct radeon_bo *ring_obj;
mutex_lock(&rdev->cp.mutex);
if (rdev->cp.ring_obj) {
r = radeon_bo_reserve(rdev->cp.ring_obj, false);
if (likely(r == 0)) {
radeon_bo_kunmap(rdev->cp.ring_obj);
radeon_bo_unpin(rdev->cp.ring_obj);
radeon_bo_unreserve(rdev->cp.ring_obj);
}
radeon_bo_unref(&rdev->cp.ring_obj);
rdev->cp.ring = NULL;
rdev->cp.ring_obj = NULL;
}
ring_obj = rdev->cp.ring_obj;
rdev->cp.ring = NULL;
rdev->cp.ring_obj = NULL;
mutex_unlock(&rdev->cp.mutex);
if (ring_obj) {
r = radeon_bo_reserve(ring_obj, false);
if (likely(r == 0)) {
radeon_bo_kunmap(ring_obj);
radeon_bo_unpin(ring_obj);
radeon_bo_unreserve(ring_obj);
}
radeon_bo_unref(&ring_obj);
}
}