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Commit fffeba2a authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/nvc0/fb: ignore readback page alloc failure to support userspace 



Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent c5bd028b

drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c

+9 −8
Original line number Diff line number Diff line
@@ -178,6 +178,7 @@ nvc0_fb_init(struct nouveau_object *object) 
	if (ret)

		return ret;



	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 (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);

}