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Date: Fri, 09 Nov 2012 19:38:49 -0500 (EST)
Message-Id: <20121109.193849.458704479891559672.davem@davemloft.net>
To: shuah.khan@hp.com
Cc: kyungmin.park@samsung.com, arnd@arndb.de, m.szyprowski@samsung.com,
        sam@ravnborg.org, sparclinux@vger.kernel.org,
        linux-kernel@vger.kernel.org, shuahkhan@gmail.com
Subject: Re: [PATCH RFT RESEND linux-next] sparc: dma-mapping: support
 debug_dma_mapping_error
From: David Miller <davem@davemloft.net>
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From: Shuah Khan <shuah.khan@hp.com>
Date: Fri, 26 Oct 2012 10:13:09 -0600

> 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@hp.com>

This doesn't even compile:

/home/davem/src/GIT/sparc/arch/sparc/include/asm/dma-mapping.h: In function 'dma_mapping_error':
/home/davem/src/GIT/sparc/arch/sparc/include/asm/dma-mapping.h:62:2: error: implicit declaration of function 'debug_dma
_mapping_error' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
In file included from include/linux/dma-mapping.h:76:0,
                 from include/linux/skbuff.h:33,
                 from include/linux/icmpv6.h:4,
                 from include/linux/ipv6.h:58,
                 from include/net/ipv6.h:16,
                 from include/linux/sunrpc/clnt.h:26,
                 from include/linux/nfs_fs.h:30,
                 from init/do_mounts.c:30: