diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2013-01-16 10:05:31 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2013-04-26 15:37:32 +1000 |
| commit | fffeba2a21a8ad6276066898108c94fe84e3a842 (patch) | |
| tree | 26b379f4abe577912d2ce174a5b1cf4d481cbd01 | |
| parent | c5bd028baae4b738075f16d00f9f857eb439cd93 (diff) | |
drm/nvc0/fb: ignore readback page alloc failure to support userspace
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c b/drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c index 7606ed15b6fa..3b2ddc65bd48 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c +++ b/drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c @@ -178,7 +178,8 @@ nvc0_fb_init(struct nouveau_object *object) if (ret) return ret; - nv_wr32(priv, 0x100c10, priv->r100c10 >> 8); + if (priv->r100c10_page) + nv_wr32(priv, 0x100c10, priv->r100c10 >> 8); return 0; } @@ -217,13 +218,13 @@ nvc0_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine, priv->base.ram.put = nv50_fb_vram_del; priv->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO); - if (!priv->r100c10_page) - return -ENOMEM; - - priv->r100c10 = pci_map_page(device->pdev, priv->r100c10_page, 0, - PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); - if (pci_dma_mapping_error(device->pdev, priv->r100c10)) - return -EFAULT; + if (priv->r100c10_page) { + priv->r100c10 = pci_map_page(device->pdev, priv->r100c10_page, + 0, PAGE_SIZE, + PCI_DMA_BIDIRECTIONAL); + if (pci_dma_mapping_error(device->pdev, priv->r100c10)) + return -EFAULT; + } return nouveau_fb_preinit(&priv->base); } |