Re: [PATCH RFT RESEND linux-next] sparc: dma-mapping: supportdebug_dma_mapping_error

[David Miller]

From: Shuah Khan <shuah.khan@xxxxxx>
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@xxxxxx>

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:
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