radeon_ring_lock
r = radeon_ring_lock(rdev, ring, 3);
r = radeon_ring_lock(rdev, ring, num_loops * 7 + 18);
r = radeon_ring_lock(rdev, ring, cik_default_size + 17);
r = radeon_ring_lock(rdev, ring, num_loops * 7 + 14);
r = radeon_ring_lock(rdev, ring, 5);
r = radeon_ring_lock(rdev, ring, 7);
r = radeon_ring_lock(rdev, ring, evergreen_default_size + 19);
r = radeon_ring_lock(rdev, ring, num_loops * 5 + 11);
r = radeon_ring_lock(rdev, ring, 7);
r = radeon_ring_lock(rdev, ring, cayman_default_size + 19);
r = radeon_ring_lock(rdev, ring, 2);
r = radeon_ring_lock(rdev, ring, ndw);
r = radeon_ring_lock(rdev, ring, 2);
r = radeon_ring_lock(rdev, ring, num_loops * 4 + 64);
r = radeon_ring_lock(rdev, ring, 64);
r = radeon_ring_lock(rdev, ring, 8);
r = radeon_ring_lock(rdev, ring, 8);
r = radeon_ring_lock(rdev, ring, 7);
r = radeon_ring_lock(rdev, ring, 3);
r = radeon_ring_lock(rdev, ring, num_loops * 6 + 24);
r = radeon_ring_lock(rdev, ring, 4);
r = radeon_ring_lock(rdev, ring, num_loops * 4 + 8);
int radeon_ring_lock(struct radeon_device *rdev, struct radeon_ring *cp, unsigned ndw);
r = radeon_ring_lock(rdev, ring, 64 + RADEON_NUM_SYNCS * 8);
r = radeon_ring_lock(rdev, ring, size);
r = radeon_ring_lock(rdev, ring, 64);
r = radeon_ring_lock(rdev, ringA, 64);
r = radeon_ring_lock(rdev, ringA, 64);
r = radeon_ring_lock(rdev, ringB, 64);
r = radeon_ring_lock(rdev, ringB, 64);
r = radeon_ring_lock(rdev, ringA, 64);
r = radeon_ring_lock(rdev, ringB, 64);
r = radeon_ring_lock(rdev, ringC, 64);
r = radeon_ring_lock(rdev, ringC, 64);
r = radeon_ring_lock(rdev, ring, 16);
r = radeon_ring_lock(rdev, ring, 64);
r = radeon_ring_lock(rdev, ring, num_loops * 5 + 8);
r = radeon_ring_lock(rdev, ring, 7 + 4);
r = radeon_ring_lock(rdev, ring, si_default_size + 10);
r = radeon_ring_lock(rdev, ring, 2);
r = radeon_ring_lock(rdev, ring, num_loops * 5 + 11);
r = radeon_ring_lock(rdev, ring, 10);
r = radeon_ring_lock(rdev, ring, 3);