drm/nouveau/bar/gf100: ensure BAR is mapped
authorJon Derrick <jonathan.derrick@intel.com>
Sat, 16 Mar 2019 00:05:17 +0000 (18:05 -0600)
committerBen Skeggs <bskeggs@redhat.com>
Wed, 1 May 2019 01:08:39 +0000 (11:08 +1000)
commit12e08beb32d64b6070b718630490db83dd321c8c
tree3a2b641dbcd53c85f5e81ca49e37099682344b7e
parentf10b83de1fd49216a4c657816f48001437e4bdd5
drm/nouveau/bar/gf100: ensure BAR is mapped

If the BAR is zero size, it indicates it was never successfully mapped.
Ensure that the BAR is valid during initialization before attempting to
use it.

Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.c