drm/nouveau/pmu: serialise send() with private mutex

nvkm_subdev.mutex is going away.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
This commit is contained in:
Ben Skeggs 2020-12-03 08:34:07 +10:00
commit 5a479d4565
3 changed files with 7 additions and 3 deletions