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drm/nouveau: check for error when allocating/mapping dummy page

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2010-08-12 10:23:06 +10:00
parent 415e6186f1
commit bd6aaea893
1 changed files with 11 additions and 1 deletions
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12
drivers/gpu/drm/nouveau/nouveau_sgdma.c
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@ -214,6 +214,7 @@ int
nouveau_sgdma_init(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct pci_dev *pdev = dev->pdev;
struct nouveau_gpuobj *gpuobj = NULL;
uint32_t aper_size, obj_size;
int i, ret;
@ -239,10 +240,19 @@ nouveau_sgdma_init(struct drm_device *dev)
dev_priv->gart_info.sg_dummy_page =
alloc_page(GFP_KERNEL|__GFP_DMA32);
if (!dev_priv->gart_info.sg_dummy_page) {
nouveau_gpuobj_del(dev, &gpuobj);
return -ENOMEM;
}
set_bit(PG_locked, &dev_priv->gart_info.sg_dummy_page->flags);
dev_priv->gart_info.sg_dummy_bus =
pci_map_page(dev->pdev, dev_priv->gart_info.sg_dummy_page, 0,
pci_map_page(pdev, dev_priv->gart_info.sg_dummy_page, 0,
PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
if (pci_dma_mapping_error(pdev, dev_priv->gart_info.sg_dummy_bus)) {
nouveau_gpuobj_del(dev, &gpuobj);
return -EFAULT;
}
if (dev_priv->card_type < NV_50) {
/* Maybe use NV_DMA_TARGET_AGP for PCIE? NVIDIA do this, and