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| author | Chris Metcalf <cmetcalf@tilera.com> | 2013-08-05 12:37:24 -0400 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2013-08-06 12:55:36 -0400 |
| commit | 9b6846cede40cf12429d0fa06b3af0a0f40ae596 (patch) | |
| tree | 5855548ce4adfba321fa957d64b88f7230b9e3ec | |
| parent | cf89c4262bd5fa70e67953126001c08ecea4f346 (diff) | |
| download | linux-9b6846cede40cf12429d0fa06b3af0a0f40ae596.tar.gz linux-9b6846cede40cf12429d0fa06b3af0a0f40ae596.tar.bz2 linux-9b6846cede40cf12429d0fa06b3af0a0f40ae596.zip | |
tile PCI DMA: handle a NULL dev argument properly
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
| -rw-r--r-- | arch/tile/kernel/pci-dma.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/tile/kernel/pci-dma.c b/arch/tile/kernel/pci-dma.c index 7e22e73264a9..adc369d8c77b 100644 --- a/arch/tile/kernel/pci-dma.c +++ b/arch/tile/kernel/pci-dma.c @@ -36,8 +36,9 @@ static void *tile_dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs) { - u64 dma_mask = dev->coherent_dma_mask ?: DMA_BIT_MASK(32); - int node = dev_to_node(dev); + u64 dma_mask = (dev && dev->coherent_dma_mask) ? + dev->coherent_dma_mask : DMA_BIT_MASK(32); + int node = dev ? dev_to_node(dev) : 0; int order = get_order(size); struct page *pg; dma_addr_t addr; |