From: Sean Paul <seanpaul@chromium.org>
Date: Wed, 1 Oct 2014 15:31:50 +0000 (+0100)
Subject: arm64: Use DMA_ERROR_CODE to denote failed allocation
X-Git-Tag: v3.18-rc1~136^2~4
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a52ce121918382a4249d621cceb07c30e1c00fa2;p=karo-tx-linux.git

arm64: Use DMA_ERROR_CODE to denote failed allocation

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>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
---

diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
index d6ceb3df0047..2c71077cacfd 100644
--- a/arch/arm64/mm/dma-mapping.c
+++ b/arch/arm64/mm/dma-mapping.c
@@ -122,7 +122,7 @@ 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;
 }