On Friday 28 February 2014 09:24:27 Santosh Shilimkar wrote:

So for ARM 'allnoconfig' build we have CONFIG_OF enabled but
CONFIG_DMA_OF disabled. With that the of-dma.c gets compiled
out leaving the functions from of-dma.h undefined. I noticed
this while adding couple of exports in of_dma.h

Looking at current linux-next, I find

Kconfig:

menuconfig DMADEVICES
        bool "DMA Engine support"
...
if DMADEVICES

config DMA_OF
        def_bool y
        depends on OF

endif

This means that DMA_OF is disabled in 'allnoconfig' since DMADEVICES
is also disabled, as you say. The Makefile looks like

obj-$(CONFIG_DMA_OF) += of-dma.o

As of 5fa422c922c25 "dmaengine: move drivers/of/dma.c -> drivers/dma/of-dma.c"

which seems to solve the problem already.

I am not sure but we added couple of functions for dma-ranges
and dma-coherent which gets called from generic code.

These functions have nothing to do with the dmaengine code though,
they should be in a different file.

	Arnd