On Wednesday 28 January 2015 15:43:57 Murali Karicheri wrote:

quoted

this. Hope I am on the right track.

Reproduced this. Following errors seen when building the modules.

   LD [M]  drivers/net/ethernet/ti/keystone_netcp.o
drivers/net/ethernet/ti/netcp_ethss.o: In function `init_module':
netcp_ethss.c:(.init.text+0x0): multiple definition of `init_module'
drivers/net/ethernet/ti/netcp_core.o:netcp_core.c:(.init.text+0x0): 
first defined here
drivers/net/ethernet/ti/netcp_ethss.o: In function `cleanup_module':
netcp_ethss.c:(.exit.text+0x0): multiple definition of `cleanup_module'
drivers/net/ethernet/ti/netcp_core.o:netcp_core.c:(.exit.text+0x0): 
first defined here
make[4]: *** [drivers/net/ethernet/ti/keystone_netcp.o] Error 1

BTW, I had to disable cpsw_ale.c to get to build keystone NetCP. I am 
assuming someone from TI is addressing this.

drivers/net/ethernet/ti/cpsw_ale.c: In function ‘cpsw_ale_start’:
drivers/net/ethernet/ti/cpsw_ale.c:759:2: error: ‘KBUILD_MODNAME’ 
undeclared (first use in this function)
drivers/net/ethernet/ti/cpsw_ale.c:759:2: note: each undeclared 
identifier is reported only once for each function it appears in

I think both problems are nontrivial to fix. The first one is obviously
that there are multiple init_module functions in one module. You have
to either split the driver into multiple loadable modules with at most
one init_module/cleanup_module pair each, or call one of the functions
from the other one in the right order.

The second problem is where I got stuck myself: cpsw_ale.c (also cpts.c)
is getting linked into both modules, which is not allowed: It is
impossible for the kernel to compile these if one driver is a module
and the other one is not, and any use of KBUILD_MODNAME fails because
it is unclear what the modname is if the file is compiled once to
be linked into two drivers.

	Arnd