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Subject[PATCH v2] arm64: Use DMA_ERROR_CODE to denote failed allocation
Date
This patch replaces the static assignment of ~0 to dma_handle with
DMA_ERROR_CODE to be consistent with other platforms.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
---

Changes in v2:
- Removed the check for DMA_ERROR_CODE in __dma_free_noncoherent
the function shouldn't be called after failed allocation

arch/arm64/mm/dma-mapping.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
index 4164c5a..5687dd4 100644
--- a/arch/arm64/mm/dma-mapping.c
+++ b/arch/arm64/mm/dma-mapping.c
@@ -125,7 +125,7 @@ static void *__dma_alloc_noncoherent(struct device *dev, size_t size,
no_map:
__dma_free_coherent(dev, size, ptr, *dma_handle, attrs);
no_mem:
- *dma_handle = ~0;
+ *dma_handle = DMA_ERROR_CODE;
return NULL;
}

--
2.1.1


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