diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2010-08-12 02:23:06 +0200 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2010-08-17 03:59:09 +0200 |
| commit | bd6aaea89318bd3aede9e219d6a003afd9978d5b (patch) | |
| tree | dc74a8a9f1cadb5d941b169eb2e1b7e9ed68c430 /drivers/gpu | |
| parent | drm/nouveau: fix race condition when under memory pressure (diff) | |
| download | linux-bd6aaea89318bd3aede9e219d6a003afd9978d5b.tar.xz linux-bd6aaea89318bd3aede9e219d6a003afd9978d5b.zip | |
drm/nouveau: check for error when allocating/mapping dummy page
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_sgdma.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_sgdma.c b/drivers/gpu/drm/nouveau/nouveau_sgdma.c index 491767fe4fcf..6b9187d7f67d 100644 --- a/drivers/gpu/drm/nouveau/nouveau_sgdma.c +++ b/drivers/gpu/drm/nouveau/nouveau_sgdma.c @@ -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 |