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-rw-r--r--drivers/gpu/drm/nouveau/nouveau_ttm.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
index 3f0fb55cb473..bb030e6c00ed 100644
--- a/drivers/gpu/drm/nouveau/nouveau_ttm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
@@ -350,11 +350,14 @@ nouveau_ttm_init(struct nouveau_drm *drm)
bits = nvxx_mmu(&drm->device)->dma_bits;
if (nvxx_device(&drm->device)->func->pci) {
- if (drm->agp.bridge ||
- !pci_dma_supported(dev->pdev, DMA_BIT_MASK(bits)))
+ if (drm->agp.bridge)
bits = 32;
ret = pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(bits));
+ if (ret && bits != 32) {
+ bits = 32;
+ ret = pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(bits));
+ }
if (ret)
return ret;