Hi Greg,

On Fri, 10 Jun 2011 16:05:48 +1000 Stephen Rothwell [off-list ref] wrote:

No, I still get these:

In file included from drivers/staging/comedi/drivers/addi_apci_035.c:7:0:
drivers/staging/comedi/drivers/addi-data/addi_common.c: In function 'i_ADDI_Attach':
drivers/staging/comedi/drivers/addi-data/addi_common.c:2765:7: error: implicit declaration of function 'virt_to_bus'

virt_to_bus is only defined for 32 bit powerpc (not 64 bit) (and maybe
not at all on some architectures e.g. sparc).

From Documentation/DMA-API-HOWTO.txt:
"All drivers should be using these interfaces with no exceptions.  It
is planned to completely remove virt_to_bus() and bus_to_virt() as
they are entirely deprecated.  Some ports already do not provide these
as it is impossible to correctly support them."

Drivers that use virt_to_bus should Kconfig depend on VIRT_TO_BUS.

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/