drm/nouveau/disp: use private spinlock to control exclusive access to disp

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 08:39:42 +10:00
commit bfa7f6a6df
2 changed files with 14 additions and 10 deletions