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drm/nouveau: prevent oops if no mmu subdev present 

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2016-07-09 10:41:01 +10:00
parent 2a4bd8ac2f
commit 2100292c95
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/nouveau/nouveau_drm.c
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@ -430,6 +430,11 @@ nouveau_drm_load(struct drm_device *dev, unsigned long flags)
nouveau_vga_init(drm);
if (drm->device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
if (!nvxx_device(&drm->device)->mmu) {
ret = -ENOSYS;
goto fail_device;
}
ret = nvkm_vm_new(nvxx_device(&drm->device), 0, (1ULL << 40),
0x1000, NULL, &drm->client.vm);
if (ret)