drm/amdgpu/{uvd,vcn}: fetch ring's read_ptr after alloc

[What]
readptr read always returns zero, since most likely
these blocks are either power or clock gated.

[How]
fetch rptr after amdgpu_ring_alloc() which informs
the power management code that the block is about to be
used and hence the gating is turned off.

Signed-off-by: Louis Li <[email protected]>
Signed-off-by: Shirish S <[email protected]>
Reviewed-by: Christian König <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Cc: [email protected]

0 files changed, 0 insertions, 0 deletions