[PATCH] 2.6 - alpha: add missing dma_mapping_error

[Stefan Knoblich]

Hi,

attached patch defines dma_mapping_error on alpha. Without this libata-core.c 
won't compile.

stefan

--- linux-2.6.10/include/asm-alpha/dma-mapping.h.orig 2004-12-26 
20:45:25.139475104 +0100
+++ linux-2.6.10/include/asm-alpha/dma-mapping.h 2004-12-26 20:46:54.684862136 
+0100
@@ -25,6 +25,8 @@
   pci_unmap_sg(alpha_gendev_to_pci(dev), sg, nents, dir)
 #define dma_supported(dev, mask)   \
   pci_dma_supported(alpha_gendev_to_pci(dev), mask)
+#define dma_mapping_error(addr)   \
+  pci_dma_mapping_error(addr)
 
 #else /* no PCI - no IOMMU. */
 
@@ -43,6 +45,8 @@
 #define dma_unmap_page(dev, addr, size, dir) do { } while (0)
 #define dma_unmap_sg(dev, sg, nents, dir) do { } while (0)
 
+#define dma_mapping_error(addr)  (0)
+
 #endif /* !CONFIG_PCI */
 
 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
-
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