From: Catalin Marinas <catalin.marinas@arm.com>
Date: Tue, 1 Apr 2014 17:32:55 +0000 (+0100)
Subject: arm64: Fix DMA range invalidation for cache line unaligned buffers
X-Git-Tag: v3.15-rc1~49^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ebf81a938dade3b450eb11c57fa744cfac4b523f;p=pandora-kernel.git

arm64: Fix DMA range invalidation for cache line unaligned buffers

If the buffer needing cache invalidation for inbound DMA does start or
end on a cache line aligned address, we need to use the non-destructive
clean&invalidate operation. This issue was introduced by commit
7363590d2c46 (arm64: Implement coherent DMA API based on swiotlb).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Jon Medhurst (Tixy) <tixy@linaro.org>
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