CHK     include/linux/version.h
  CHK     include/generated/utsrelease.h
make[1]: 'include/generated/mach-types.h' is up to date.
  CALL    scripts/checksyscalls.sh
  CHK     include/generated/compile.h
  CC [M]  drivers/atm/ambassador.o
drivers/atm/ambassador.c: In function ‘do_loader_command’:
drivers/atm/ambassador.c:1761:58: warning: passing argument 1 of ‘virt_to_bus’ discards ‘volatile’ qualifier from pointer target type
error, forbidden warning: ambassador.c:1761
scripts/Makefile.build:313: recipe for target 'drivers/atm/ambassador.o' failed
make[2]: *** [drivers/atm/ambassador.o] Error 1
scripts/Makefile.build:443: recipe for target 'drivers/atm' failed
make[1]: *** [drivers/atm] Error 2
Makefile:951: recipe for target 'drivers' failed
make: *** [drivers] Error 2