drm/amdgpu/hdp5.2: do a posting read when flushing HDP

commit f756dbac1c upstream.

Need to read back to make sure the write goes through.

Cc: David Belanger <david.belanger@amd.com>
Reviewed-by: Frank Min <frank.min@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alex Deucher 2024-11-22 11:24:13 -05:00 • committed by Greg Kroah-Hartman
commit f0cbcf1f77