ARM: dma-mapping: introduce DMA_ERROR_CODE constant

[pandora-kernel.git] / arch / arm / common / dmabounce.c

diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c
index 595ecd2..210ad1b 100644 (file)
--- a/arch/arm/common/dmabounce.c
+++ b/arch/arm/common/dmabounce.c
@@ -254,7 +254,7 @@ static inline dma_addr_t map_single(struct device *dev, void *ptr, size_t size,
        if (buf == NULL) {
                dev_err(dev, "%s: unable to map unsafe buffer %p!\n",
                       __func__, ptr);
-               return ~0;
+               return DMA_ERROR_CODE;
        }
 
        dev_dbg(dev, "%s: unsafe buffer %p (dma=%#x) mapped to %p (dma=%#x)\n",
@@ -320,7 +320,7 @@ dma_addr_t __dma_map_page(struct device *dev, struct page *page,
 
        ret = needs_bounce(dev, dma_addr, size);
        if (ret < 0)
-               return ~0;
+               return DMA_ERROR_CODE;
 
        if (ret == 0) {
                __dma_page_cpu_to_dev(page, offset, size, dir);
@@ -329,7 +329,7 @@ dma_addr_t __dma_map_page(struct device *dev, struct page *page,
 
        if (PageHighMem(page)) {
                dev_err(dev, "DMA buffer bouncing of HIGHMEM pages is not supported\n");
-               return ~0;
+               return DMA_ERROR_CODE;
        }
 
        return map_single(dev, page_address(page) + offset, size, dir);