Pull sbs into release branch

[powerpc.git] / include / asm-arm / dma-mapping.h

diff --git a/include/asm-arm/dma-mapping.h b/include/asm-arm/dma-mapping.h
index 55eb4dc..abfb75b 100644 (file)
--- a/include/asm-arm/dma-mapping.h
+++ b/include/asm-arm/dma-mapping.h
@@ -12,8 +12,12 @@
  * uncached, unwrite-buffered mapped memory space for use with DMA
  * devices.  This is the "generic" version.  The PCI specific version
  * is in pci.h
+ *
+ * Note: Drivers should NOT use this function directly, as it will break
+ * platforms with CONFIG_DMABOUNCE.
+ * Use the driver DMA support - see dma-mapping.h (dma_sync_*)
  */
-extern void consistent_sync(void *kaddr, size_t size, int rw);
+extern void consistent_sync(const void *kaddr, size_t size, int rw);
 
 /*
  * Return whether the given device DMA address mask can be supported
@@ -44,7 +48,7 @@ static inline int dma_get_cache_alignment(void)
        return 32;
 }
 
-static inline int dma_is_consistent(dma_addr_t handle)
+static inline int dma_is_consistent(struct device *dev, dma_addr_t handle)
 {
        return !!arch_is_coherent();
 }
@@ -57,6 +61,22 @@ static inline int dma_mapping_error(dma_addr_t dma_addr)
        return dma_addr == ~0;
 }
 
+/*
+ * Dummy noncoherent implementation.  We don't provide a dma_cache_sync
+ * function so drivers using this API are highlighted with build warnings.
+ */
+static inline void *
+dma_alloc_noncoherent(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp)
+{
+       return NULL;
+}
+
+static inline void
+dma_free_noncoherent(struct device *dev, size_t size, void *cpu_addr,
+                    dma_addr_t handle)
+{
+}
+
 /**
  * dma_alloc_coherent - allocate consistent memory for DMA
  * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices