drm/amd/powerplay: lock grbm_gfx index when changing instance

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tom St Denis 2017-09-12 12:29:06 -04:00 • committed by Alex Deucher
commit c9232d9ee8