drm/amdgpu/gfx7: Clean up gfx ring during reset

Clear the WPTR and RPTR at ring initialization.
Additionally clear the ring contents during reset.

After a reset, the ring contents could be "dirty"
and contain packets emitted before the reset.
and thus need to be cleared to prevent the command
processor from executing packets left over in the
ring from before the reset.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

0 files changed, 0 insertions, 0 deletions