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 <m.szyprowski@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Tested-By: Subash Patel <subash.ramaswamy@linaro.org>
diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c
index 595ecd29..210ad1b 100644
--- a/arch/arm/common/dmabounce.c
+++ b/arch/arm/common/dmabounce.c
@@ -254,7 +254,7 @@
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 @@
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 @@
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);