blktrace: Fix potential deadlock between delete & sysfs ops

[pandora-kernel.git] / include / linux / dma-mapping.h

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index be86ae1..e13117c 100644 (file)
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -42,6 +42,9 @@ struct dma_map_ops {
        int (*mapping_error)(struct device *dev, dma_addr_t dma_addr);
        int (*dma_supported)(struct device *dev, u64 mask);
        int (*set_dma_mask)(struct device *dev, u64 mask);
+#ifdef ARCH_HAS_DMA_GET_REQUIRED_MASK
+       u64 (*get_required_mask)(struct device *dev);
+#endif
        int is_phys;
 };