linux-kernel - [PATCH 8/9] sparc: dma_debug: add debug_dma_mapping

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Date:	Fri, 23 Nov 2012 14:37:22 -0700
From:	Shuah Khan <shuah.khan@...com>
To:	Joerg Roedel <joro@...tes.org>, a-jacquiot@...com,
	fenghua.yu@...el.com, catalin.marinas@....com, lethal@...ux-sh.org,
	benh@...nel.crashing.org, ralf@...ux-mips.org, tony.luck@...el.com,
	davem@...emloft.net, m.szyprowski@...sung.com, msalter@...hat.com,
	monstr@...str.eu, Ming Lei <ming.lei@...onical.com>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-c6x-dev@...ux-c6x.org,
	linux-ia64@...r.kernel.org, linux-mips@...ux-mips.org,
	linuxppc-dev@...ts.ozlabs.org, linux-sh@...r.kernel.org,
	sparclinux@...r.kernel.org, microblaze-uclinux@...e.uq.edu.au,
	shuahkhan@...il.com, LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 8/9] sparc: dma_debug: add debug_dma_mapping_error support

Add dma-debug interface debug_dma_mapping_error() to debug drivers that fail
to check dma mapping errors on addresses returned by dma_map_single() and
dma_map_page() interfaces.

Signed-off-by: Shuah Khan <shuah.khan@...com>
Acked-by: David S. Miller <davem@...emloft.net>
---
 arch/sparc/include/asm/dma-mapping.h |    1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h
index 8493fd3..05fe53f 100644
--- a/arch/sparc/include/asm/dma-mapping.h
+++ b/arch/sparc/include/asm/dma-mapping.h
@@ -59,6 +59,7 @@ static inline void dma_free_attrs(struct device *dev, size_t size,
 
 static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
 {
+	debug_dma_mapping_error(dev, dma_addr);
 	return (dma_addr == DMA_ERROR_CODE);
 }
 
-- 
1.7.9.5




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