diff options
| author | Jon Derrick <jonathan.derrick@intel.com> | 2019-03-16 03:05:17 +0300 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2019-05-01 04:08:39 +0300 |
| commit | 12e08beb32d64b6070b718630490db83dd321c8c (patch) | |
| tree | 3a2b641dbcd53c85f5e81ca49e37099682344b7e | |
| parent | f10b83de1fd49216a4c657816f48001437e4bdd5 (diff) | |
| download | linux-12e08beb32d64b6070b718630490db83dd321c8c.tar.xz | |
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>
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.c index a3ba7f50198b..a3dcb09a40ee 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.c @@ -94,6 +94,8 @@ gf100_bar_oneinit_bar(struct gf100_bar *bar, struct gf100_barN *bar_vm, return ret; bar_len = device->func->resource_size(device, bar_nr); + if (!bar_len) + return -ENOMEM; if (bar_nr == 3 && bar->bar2_halve) bar_len >>= 1; |