Build broken on linus/master?

On Fri, Oct 26, 2012 at 14:29:28, Shilimkar, Santosh wrote:

On Friday 26 October 2012 01:18 PM, Bedia, Vaibhav wrote:

quoted

Hi,

Compiling the current linus/master (2ab3f29) using omap2plus_defconfig
throws up the following error

$make -j7 uImage
   CHK     include/generated/uapi/linux/version.h
   CHK     include/generated/utsrelease.h
make[1]: `include/generated/mach-types.h' is up to date.
   CC      arch/arm/kernel/asm-offsets.s
In file included from include/linux/dma-mapping.h:76:0,
                  from arch/arm/kernel/asm-offsets.c:15:
/datalocal/kernel/arch/arm/include/asm/dma-mapping.h: In function 'dma_mapping_error':
/datalocal/kernel/arch/arm/include/asm/dma-mapping.h:94:2: error: implicit declaration of function 'debug_dma_mapping_error'
make[1]: *** [arch/arm/kernel/asm-offsets.s] Error 1
make: *** [prepare0] Error 2

Looks like it might break build on all ARM machines. I just
noticed a patch adding debug_dma_mapping_error() for aarm64 arch.

Marek, Shuah,
Is kernel missing a patch which adds definition of
debug_dma_mapping_error() to linux/dma-debug.h ?

I can't seems to find this symbol in kernel grep.

Just saw a pull request [1] from Marek asking Linus to revert the patch
which introduced this error.

Regards,
Vaibhav

[1] http://marc.info/?l=linux-arm-kernel&m=135124417806353&w=2