From 553ac78877242b6d8b591323731df304140d0f99 Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Wed, 29 Feb 2012 14:45:28 +0100 Subject: ARM: dma-mapping: introduce DMA_ERROR_CODE constant Replace all uses of ~0 with DMA_ERROR_CODE, what should make the code easier to read. Signed-off-by: Marek Szyprowski Acked-by: Kyungmin Park Tested-By: Subash Patel --- arch/arm/common/dmabounce.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/arm/common') diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c index 595ecd290eb..210ad1bef7e 100644 --- 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); -- cgit v1.2.3