linux-kernel - [PATCH RFT] ARM64: dma-mapping: support debug_dma_mapping

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Message-ID: <1351205220.6851.3.camel@lorien2>
Date:	Thu, 25 Oct 2012 16:47:00 -0600
From:	Shuah Khan <shuah.khan@...com>
To:	catalin.marinas@....com, tony@...mide.com, olof@...om.net,
	santosh.shilimkar@...com, nico@...aro.org
Cc:	linux-arm-kernel@...ts.infradead.org,
	LKML <linux-kernel@...r.kernel.org>, shuahkhan@...il.com
Subject: [PATCH RFT] ARM64: dma-mapping: support debug_dma_mapping_error

Add support for debug_dma_mapping_error() call to avoid warning from
debug_dma_unmap() interface when it checks for mapping error checked
status. Without this patch, device driver failed to check map error
warning is generated. 

Signed-off-by: Shuah Khan <shuah.khan@...com>
---
 arch/arm64/include/asm/dma-mapping.h |    1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/include/asm/dma-mapping.h b/arch/arm64/include/asm/dma-mapping.h
index 538f4b4..9947768 100644
--- a/arch/arm64/include/asm/dma-mapping.h
+++ b/arch/arm64/include/asm/dma-mapping.h
@@ -50,6 +50,7 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr)
 static inline int dma_mapping_error(struct device *dev, dma_addr_t dev_addr)
 {
 	struct dma_map_ops *ops = get_dma_ops(dev);
+	debug_dma_mapping_error(dev, dev_addr);
 	return ops->mapping_error(dev, dev_addr);
 }
 
-- 
1.7.9.5



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